NASA - National Aeronautics and Space Administration

IPOPP v2.6 Released - 10/10/2017

• Support for the NASA SNPP research data model (enabling ingest of VIIRS and OMPS PDS files) and science processing algorithms. Many powerful new features and capabilities for support of JPSS-1 and beyond will be unlocked in a future IPOPP software patch.
• Automatic IPOPP Dashboard configuration update when new or updated Science Processing Algorithm (SPA) added. To ensure IPOPP Dashboard synchronization with the processing science algorithm suite users must update their IPOPP installations with the most current SPA releases, SPA patches, and IPOPP patches. The latest available DRL software releases are available at:https://directreadout.sci.gsfc.nasa.gov/?id=software. The Revision Level entry indicates the latest patch available for each release. Refer to Appendix E, “Installing/Updating/Configuring SPAs.”
• Extended the input data and ancillary ingest module Landing Zone and deprecated the legacy ingest Application Programming Interface (API) (IPOPP v2.3 and earlier). Legacy IPOPP users must now use the Landing Zone, which performs pre-ingest validations of sensor data in order to better synchronize science and ancillary data at execution time (extremely useful for both real-time and archived reprocessing) and guarantees ancillary data freshness. Refer to Section 6, “IPOPP Operation,” for details.
• Enhanced reprocessing capability featuring automatic identification, downloading and registration of Archived Ancillary sets for archive reprocessing.
• Root privileges are not required for IPOPP installation. Java and MySQL are bundled with IPOPP to eliminate external system dependencies.
• Improved script-based logging, to ensure ease of integration into the user data processing environment and efficient communication with DRL Outreach.Improved human readable log files may be easily searched and filtered using standard Unix tools.
• Added capability to fuse and geo-register data from multiple sensors to create value-added science products.

• The Common Sensor Data Record (C-SDR) SPA, which processes JPSS-1 and SNPP VIIRS, Advanced Technology Microwave Sounder (ATMS), and Cross-track Infrared Sounder (CrIS) Raw Data Record (RDR) HDF5 products into corresponding instrument-specific and mission-compliant HDF5 SDRs and Geolocation swath products.This version is based on the ADL Block 2.0 so that users would be able to produce higher level products from both SNPP and JPSS-1
• The Real-time Software Telemetry Processing System (RT-STPS) v6.0, which is preconfigured to enable the Direct Readout Community to acquire transmissions from Terra/Aqua, SNPP and JPSS-1, and produce output in numerous file formats. The preconfigured output formats are:Raw Data Records (RDRs) for the SNPP and JPSS-1 VIIRS, CrIS ATMS, and OMPS instruments; as well as Production Data Sets (PDS) for these SNPP instruments, Terra MODIS, and Aqua MODIS, AIRS, AMSR, AMSU, and CERES instruments.
• BlueMarble v1.8, an evolving tool to create value-added standard science products including MODIS sharpened True Color and Natural Color imagery; VIIRS sharpened True Color and Natural Color imagery; VIIRS Enhanced Near Constant Contrast (ENCC) day and night imagery; and overlays of OMPS SO2 and OMPS Ultraviolet Aerosol on True Color, Natural Color or ENCC geotiff imagery.

• C-SDR, to produce VIIRS, CrIS and ATMS mission-compliant HDF5 SDR and Geolocation swath products
• Cloud Mask, to produce the VIIRS Cloud Mask product;
• Aerosol, to produce the VIIRS Aerosol Optical Thickness (AOT), Aerosol, Suspended Matter, Aerosol Model Information, and the Aerosol Geolocation;
• Surface Reflectance (SurfReflect), to produce the VIIRS Surface Reflectance;
• Vegetation Index (VegIndex), to produce the VIIRS Vegetation Index;
• Cloud Optical Properties (COP), to produce the VIIRS Cloud Optical Properties and the VIIRS Ice & Night Water Cloud Top Temperature;
• Snow Cover (SnowCov), to produce the VIIRS Snow Cover Binary Map and VIIRS Snow Cover Fraction;
• Land Surface Temperature (LST), to produce the VIIRS Land Surface Temperature;
• CVIIRS, to produce the VIIRS Corrected Reflectance;
• VIIRS-AF, to produce VIIRS Active Fires/Fire Mask;
• GTMImagery, to produce the VIIRS GTM Imaging Band Imagery EDR; VIIRS GTM Moderate Band Imagery EDR; and VIIRS GTM Near Constant Contrast (NCC) Band Imagery EDR;
• OMPSnadir, to produce Total Column SO2, UV Aerosol Index, Total Column Ozone and Effective Surface Reflectivity (RT-STPS 5.6 or later required);
• VFIRE375, to identify active fires.
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF4 and HDF5 products, while also providing capability (via configuration file) to produce value-added products and imagery as input to decision support systems.
• BlueMarble, to create MODIS sharpened True Color and Natural Color imagery; VIIRS sharpened True Color and Natural Color imagery; VIIRS Enhanced Near Constant Contrast (ENCC) day and night imagery; and overlays of OMPS SO2 and OMPS Ultraviolet Aerosol on True Color, Natural Color or ENCC geotiff imagery.

• MODISL1DB, to create the MODIS Geolocated/Calibrated product;
• CREFL, to create the MODIS Corrected Reflectance;
• GBAD, to create ephemeris and attitude files (input for Aqua L1);
• IMAPP, to create the MODIS Level 2 Cloudmask, Cloudtop Properties, Cloud Phase, Atmospheric Profiles, and Aerosol;
• L2GEN, to create the MODIS Level 2 Ocean Color (including Chlor-a) and Sea Surface Temperature (SST);
• MOD14, to create the MODIS Level 2 Fire Mask;
• MODLST, to create the MODIS Level 2 Land Surface Temperature (LST);
• NDVIEVI, to create the MODIS Level 2 Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI);
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF, while also providing capability (via configuration file) to produce value-added products and imagery as input to decision support systems.
• BlueMarble, to create MODIS sharpened True Color and Natural Color imagery; VIIRS sharpened True Color and Natural Color imagery; VIIRS Enhanced Near Constant Contrast (ENCC) day and night imagery; and overlays of OMPS SO2 and OMPS Ultraviolet Aerosol on True Color, Natural Color or ENCC geotiff imagery.

OMPSNADIR SPA v2.0.1b Released - 5/18/2017

IMAPP SPA v3.1 Released - 9/25/2015

The DRL is pleased to announce the release of the IMAPP SPA v3.1. 

Notice: The NASA Direct Readout Conference (NDRC-9) will be held June 21 - 24 in Valladolid, Spain. For more information and to register: http://ndrc-9.gsfc.nasa.gov/

Through correspondence and technical interchange with our colleagues at the UW/SSEC this implementation of IMAPP was created for direct readout use within the multi-mission multi-discipline IPOPP framework. The International MODIS/AIRS Processing Package (IMAPP) Science Processing Algorithm (SPA) v3.1 consists of official NASA algorithms only and processes MODIS Aqua and Terra Level 1B data into the following MODIS Level 2 atmospheric products:

• Cloudmask (MOD35);
• Cloudtop Properties, Cloud Phase and Cloud Optical properties (MOD06);
• Atmospheric Profiles (MOD07);
• Aerosol (MOD04); and
• Aerosol 3km.

SPAs function in two modes: Standalone, or as an IPOPP plug-in (IPOPP v2.3 or later required).

Enhancements to this SPA include:

• Update of all NASA science algorithms to MODIS Collection 6. The datasets and metadata contained in the output science products now match the official NASA Collection 6 data products. The science products include Cloudmask (MOD35), Cloudtop Properties, Cloud Phase and Cloud Optical Properties (including Cloud Optical Thickness and Cloud Effective Radius) (MOD06), Atmospheric Profiles (MOD07) and Aerosols (MOD04 and MOD04_3K).
• Addition of the new NASA Aerosol Dark Target 3 km (MOD04_3K) product. This product offers higher resolution than the standard 10 km Aerosol (MOD04) product and is useful in resolving local scale aerosol features.
• Inclusion of NASA Deep Blue algorithm outputs (in addition to the Dark Target algorithm output) in the Aerosol (MOD04) product. The Deep Blue algorithm was developed to retrieve aerosols over bright land areas. Together, the two algorithms provide a more spatially complete view of aerosols.

Click here to access IMAPP SPA v3.1.

Please be sure to apply all updates to your H2G SPA v2.4 installation in order to visualize IMAPP SPA v3.1 output. Click here to access H2G SPA v2.4.

Click here to access the IMAPP SPA v3.1 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

C-SDR SPA v2.2 Released - 9/17/2015

The Direct Readout Laboratory (DRL) is pleased to announce the release of C-SDR SPA v2.2.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) processes SNPP VIIRS, ATMS and CrIS Raw Data Record (RDR) files into corresponding instrument-specific and mission-compliant HDF5 SDR variable or single granule output. The C-SDR accepts RDRs produced by the RT-STPS and by the NOAA CLASS.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 or later required).

Notice: The NASA Direct Readout Conference (NDRC-9) will be held June 21 - 24 in Valladolid, Spain. For more information and to register: http://ndrc-9.gsfc.nasa.gov/

Enhancements to this SPA include:

• update to v1.5.08.10 (Mx8.10) of the NOAA operational SDR software;
• CrIS SDR extended interferogram capability (provides transparency for planned HRD downlink configuration);
• update to the VIIRS SDR algorithm for enhanced processing of data with severe loss and degradation;
• updated ATMS, CrIS, and VIIRS Look-Up Tables (LUTs).

Note:  The C-SDR SPA is created using the Algorithm Development Library (ADL), which has been configured by the SNPP/JPSS algorithm team  and the DRL yielding added features unique for Direct Readout applications.  It is encouraged that users update to this version of the SDR algorithms to achieve highest fidelity while ensuring transparency for any HRD downlink reconfiguration. 

Click here to access C-SDR SPA v2.2.

Click here to access the C-SDR SPA v2.2 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

C-SDR SPA v2.1 Released - 6/1/2015

The Direct Readout Laboratory (DRL) is pleased to announce the release of C-SDR SPA v2.1.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) processes SNPP VIIRS, ATMS and CrIS Raw Data Record (RDR) files into corresponding instrument-specific and mission-compliant HDF5 SDR variable or single granule output. The C-SDR accepts RDRs produced by the RT-STPS and by the NOAA CLASS.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 or later required).

Enhancements to this SPA include:

• update to v1.5.08.08 (Mx8.8) of the NOAA operational SDR software;
• updated ATMS, CrIS, and VIIRS Look-Up Tables (LUTs); LUT updates are automatically retrieved and applied in IPOPP Mode;
• extended capabilities to meet low latency requirements with optimal fidelity, available in both Standalone and IPOPP Mode (IPOPP v2.4 or later).

Note:  The C-SDR SPA is created using the Algorithm Development Library (ADL), which has been configured by the SNPP/JPSS algorithm team  and the DRL yielding added features unique for Direct Readout applications.  It is encouraged that users update to this version of the SDR algorithms to achieve highest fidelity while ensuring transparency for any HRD downlink reconfiguration. 

Click here to access C-SDR SPA v2.1.

Click here to access the C-SDR SPA v2.1 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

H2G SPA v2.4 Released - 1/14/2015

The DRL is pleased to announce the release of the H2G_SPA (Version 2.4).  The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications to create geolocated GeoTIFF images, jpeg browse images, and png browse images for parameter datasets in SNPP, Aqua and Terra products.  H2G also creates true color imagery and user-defined false color imagery.  The H2G_SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 required).

The H2G_SPA incorporates features to enhance output and facilitate scientific interpretation:

• while creating images from a primary dataset, a secondary dataset may be used to mask appropriate areas;
• user-defined color map and user-defined scaling capabilities for conversion of dataset values into image pixels;
• choice of either geographic or stereographic projection for the output image;
• optional subsetting of swaths or fixed granules into user-defined regions of interest;
• optional mosaicing of multiple swaths or fixed granules;
• jpeg and png browse images with legends;
• fire pixel overlays on other imagery (e.g., fire pixel overlays on TrueColor image).

Enhancements to H2G_SPA v2.4 include:

• improvements to the MODIS 1km and 500m projections when using the red, green and blue bands;
• support for VIIRS Snow Cover Fraction;
• improved support for compressed SNPP data products;
• improvements to color maps and color scales in OMPS images;
• support for ATMS SDR Brightness Temperature, CrIS SDR Brightness Temperature and VIIRS SDR Reflectance and Brightness Temperature image generation capabilities (in Standalone Mode only until the next release of IPOPP);
• inverse distance-weighted interpolation and image smoothing technique for ATMS SDR, CrIS SDR and OMPS image products;
• enhanced browse product option to produce image products with improved legends and latitude/longitude overlays;
• improved vector overlays in Polar Stereographic projection.

The products displayed at the  DRL Recent Data Products Gallery are created via H2G SPA from the latest SNPP, Aqua and Terra algorithms running within the International Polar Orbiter Processing Package (IPOPP) framework.

The DRL informs you that IPOPP-produced imagery is being published (via H2G) to the DRL Gallery by the following users:

• Geographic Information Network of Alaska (GINA), University of Alaska-Fairbanks;
• Tokyo University of Information Sciences (TUIS);
• Finnish Meteorological Institute (FMI);
• United States Department of Agriculture (USDA) Forest Service Remote Sensing and Applications Center (RSAC);
• Oregon State University (OSU).

The GeoTIFF output produced by H2G_SPA are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The jpeg and png browse images are optionally enhanced with vector overlays (e.g., land/sea and political boundaries).  The H2G_SPA currently allows the user to select geographic and stereographic projections as well as ground track mercator. Inclusion of other projections is under consideration for future releases of H2G_SPA.

Click here to access H2G SPA v2.4

Click here to access the H2G SPA v2.4 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

CVIIRS SPA v1.1 Released - 1/12/2015

On behalf of the NASA Direct Readout Program, the DRL is pleased to announce the release of the CVIIRS_SPA v1.1.  The VIIRS Corrected Reflectance Science Processing Algorithm (CVIIRS_SPA) creates a VIIRS Corrected Reflectance output that may be used to produce true color imagery, and other intermediate output(s) used for higher-level processing.  CVIIRS may be seamlessly implemented within existing direct readout decision support systems due to the close attention given to predecessor output for reasons of continuity.

Enhancements to this SPA include:

• improved robustness for handling corrupt or degraded data;
• improved processing results in presence of fill and missing data (of benefit when using H2G SPA);
• ability to process chunked and/or compressed HDF5 input files;
• ability to process Big Endian or Little Endian HDF5 datasets.

Sample CVIIRS true color output may be viewed at the DRL Recent Data Products Gallery.

The CVIIRS SPA performs atmospheric correction with VIIRS visible, near-infrared, and short-wave infrared bands (bands M5, M7, M3, M4, M8, M10, M11, I1, I2, and I3).  It corrects for molecular (Rayleigh) scattering and gaseous absorption (water vapor and ozone) using climatological values for gas contents.  It requires no real-time input of ancillary data.  The Corrected Reflectance products created by CVIIRS are based on the 6S Radiative Transfer Model. 

Special thanks to the NASA Land Science Team and the ILDRCC.  We also appreciate recent inputs received from our colleagues at the CIMSS.

The input to the CVIIRS SPA are SDR files (e.g., accepts output from C-SDR_SPA, CSPP, and VIIRS-SDR_SPA packages as well as corresponding files produced by the NOAA CLASS).  The CVIIRS SPA output is the same format as the CREFL_SPA (the MODIS Corrected Reflectance algorithm).  The CVIIRS SPA functions in two modes:  Standalone, or as an IPOPP plug-in (Version 2.3 or later required).

Click here to access CVIIRS SPA v1.1.

Click here to access the CVIIRS SPA v1.1 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

C-SDR SPA v2.0 Released - 12/12/2014

The DRL is pleased to announce the release of C-SDR SPA v2.0.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) processes SNPP VIIRS, ATMS and CrIS Raw Data Record (RDR) files into corresponding instrument-specific and mission-compliant HDF5 SDR swath or single granule products. The C-SDR receives as input mission-compliant RDRs produced by the RT-STPS.  The C-SDR accepts RDRs produced by the NOAA CLASS.  The C-SDR produces swath or single granule output.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 required). 

Enhancements to C-SDR SPA v2.0 include:

• update to v1.5.08.06 (Mx8.6) of the SNPP operational SDR software;
• updated ATMS, CrIS, and VIIRS Look-up Tables (LUTs);
• VIIRS calibration algorithm more robust for Direct Readout applications (i.e., in the event of data drop-outs due to poor reception).

Note:  The C-SDR SPA is created using the Algorithm Development Library (ADL), which has been configured by the SNPP/JPSS algorithm team  and the DRL yielding added features unique for Direct Readout applications.  It is encouraged that users update to this version of the SDR algorithms to achieve highest fidelity while ensuring transparency for any HRD downlink reconfiguration.  

Click here to access C-SDR SPA v2.0.

Click here to access the C-SDR SPA v2.0 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

VIIRS-AF SPA v1.3.6 Released - 12/5/2014

The DRL is pleased to announce the release of the VIIRS-AF_SPA v1.3.6. The VIIRS Active Fires Science Processing Algorithm (VIIRS-AF SPA) primarily uses brightness temperatures derived from bands M13 and M15 to detect fires.

Enhancements to this SPA include the update of the algorithm to version 1.3.6. This version of the algorithm has been synchronized with its heritage MODIS counterpart (i.e., MOD14) to fulfill NASA’s objective of measurement continuity. VIIRS-AF_SPA v1.3.6 includes all relevant changes made to the MOD14 algorithm as part of the formal MODIS algorithm evolution (presently Collection 6 series) process.

Please be advised this is a NASA evaluation Level 2 algorithm (follow-on to the previous VIIRS-AF v1.3.1) and that the International Land Direct Readout Coordinating Committee (ILDRCC) is conducting an analysis relevant to user needs for direct readout applications and providing perspective back to the science team.  

Note: Users must use output produced by C-SDR SPA v1.9 with latest patch level to achieve best results.  Click here to download C-SDR SPA v1.9. 

The VIIRS-AF SPA uses bands M5, M7, M11 and M16 to reject false alarms and to mask clouds. The input to the VIIRS-AF are SDR files (e.g., output from C-SDR_SPA, CSPP, and VIIRS-SDR_SPA packages as well as corresponding files produced by the NOAA CLASS). The VIIRS-AF output is the same format as the MOD14_SPA (formatted in HDF4). The outputs are a two-dimensional fire mask in HDF and a fire location list text file. The VIIRS-AF SPA functions in two modes:  Standalone, or as an IPOPP plug-in (Version 2.3 or later required).

Note: IPOPP users participating in the ILDRCC's evaluation may easily install VIIRS-AF_SPA v1.3.6 as a plug-in to execute concurrently with any pre-existing EOS and SNPP algorithms, which is relevant for mitigating measurement ambiguity as part of the intercomparison process.

Since the VIIRS-AF output is the same format as MOD14, its output may be presented as input to an existing decision support system.  Also, in combination with the H2G_SPA, the VIIRS-AF output may be reformatted as a GeoTIFF that is GIS-ingestible.

Click here to access VIIRS-AF SPA v1.3.6.

Click here to access the VIIRS-AF SPA v1.3.6 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

v1.5.08.04 EDR SPAs Released - 8/20/2014

The DRL is pleased to announce the release of the following JPSS Program NOAA Environmental Data Record (EDR) operational algorithms (v1.5.08.04 baseline), where each function either internal to IPOPP (plug-in) or external to IPOPP (standalone):

• ACTIVEFIRES.  The ACTIVEFIRES_SPA takes as input VIIRS Moderate Resolution Sensor Data Record (SDR) and Terrain-Corrected Geolocation products, and produces the mission-compliant VIIRS Active Fires Application Related Product (ARP) that also contains the Fire Mask (extended capability).
• AEROSOL.  The AEROSOL_SPA takes as input VIIRS Moderate Resolution Band SDR and Terrain-Corrected Geolocation products, the VIIRS Cloud Mask Intermediate Product (IP), and meteorological ancillary, and produces the mission-compliant Aerosol Optical Thickness (AOT) IP, Aerosol Model Index (AMI) IP, Aerosol Environmental Data Record (EDR), Suspended Matter (SM) EDR, and Aerosol Geolocation HDF5 product.
• COP (Cloud Optical Properties) SPA.  The COP_SPA takes as inputs VIIRS Moderate Resolution Band SDR and Terrain-Corrected Geolocation products, the VIIRS Cloud Mask IP, and meteorological ancillary to produce mission-compliant VIIRS Cloud Optical Properties IP and VIIRS Ice & Night Water Cloud Top Temperature HDF5 IP.
• CLOUDMASK.  The CLOUDMASK_SPA takes as input VIIRS I1, I2, I4, I5, M1, M4, M5, M7, M8, M9, M10, M11, M12, M13, M14, M15, and M16 band SDR products; the VIIRS M-Band Terrain-corrected Geolocation product; the VIIRS Active Fire Product and meteorological ancillaries.  The SPA produces the mission-compliant Cloud Mask IP HDF5 product.    
• LST (Land Surface Temperature).  The LST_SPA takes as inputs the VIIRS M12, M13, M15, and M16 band SDR products; the VIIRS M-band Terrain-Corrected Geolocation product; the VIIRS Cloud Mask IP; and (optionally) the Aerosol Optical Thickness (AOT) IP, and produces the VIIRS LST Environmental Data Record (EDR) product. 
• SNOWCOV (Snow Cover).  The SNOWCOV_SPA takes as input the VIIRS I1, I2, I3, I5, M15, and M16 band SDR products; the VIIRS M-Band Terrain-Corrected Geolocation product; the VIIRS I-Band Terrain-Corrected Geolocation product; the VIIRS Cloud Mask Intermediate Product (IP); and the VIIRS Aerosol Optical Thickness IP and produces the mission-compliant Snow Binary Map EDR and Snow Fraction EDR.
• SURFREFLECT (Surface Reflectance):  The SURFREFLECT_SPA takes as inputs VIIRS M-band Sensor Data Record (SDR) products; VIIRS I-band SDR products; the VIIRS M-Band Terrain-Corrected Geolocation product; the VIIRS I-Band Terrain-Corrected Geolocation product; the VIIRS Cloud IP; the Aerosol Optical Thickness IP; and the Aerosol Model Index IP and meteorological ancillary, and produces the mission-compliant VIIRS Surface Reflectance HDF5 IP. 
• VEGINDEX (Vegetation Index).  The VEGINDEX_SPA takes as inputs VIIRS I1 and I2 band SDR products; the VIIRS I-band Terrain-Corrected Geolocation product; and the VIIRS Surface Reflectance Intermediate Product (IP) and produces the mission-compliant VIIRS Vegetation Index EDR product.

Enhancements to these SPAs include:

• algorithms updated to version 1.5.08.04 (Mx8.4);
• process compressed HDF5 input files (i.e. from NOAA CLASS beginning 8/15/14);
• process single-granule and swaths (i.e., where all acquired data is output per swath, including partial granules);
• updated Lookup Tables (LUTs).

Special thanks to our mission colleagues!

The algorithms are produced by the JPSS Ground Project from the IDPS ADL code baseline.  The algorithms were ported to run outside of the IDPS for direct readout applications.  The SPA implementation function in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 or later required).  Each of these NOAA EDR algorithms will accept input from either a direct readout environment or from the NOAA CLASS to produce mission-compliant output.

Installing new or updated SPAs into an existing operational IPOPP (v2.3 or later) framework is very easy.  It is encouraged that all desired SPAs are updated at this time.  Please follow the simple procedure:

1. Download each EDR SPA tar file to your $HOME/drl directory
2. Close the IPOPP Dashboard and SLS Console (if they are open)
3. Run the install script for each SPA (requisite services are stopped, previous SPA version deleted and necessary database registration operation performed)
4. Start services (from Dashboard or via legacy CLI)

For additional details please refer to Section 7, “Installing/Updating/Configuring SPAs,” of the IPOPP v2.3 User Guide.  Click here to access the IPOPP v2.3 User Guide, as well as User Guides for all of the v1.5.08.04 SPAs.

The generalized SPA API is key to a single instance of the IPOPP Framework serving as an effective algorithm evaluation tool, where the NOAA operational algorithms are the basis for intercomparison with candidate algorithms.

Click here to access the v1.5.08.04 SPAs.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

GTMIMAGERY SPA v1.5.08.04 Released - 8/18/2014

The DRL is pleased to announce the release of the JPSS Program GTM Imagery SPA (Version 1.5.08.04).

The VIIRS Ground Track Mercator Imagery Science Processing Algorithm (GTMIMAGERY SPA) produces mission-compliant HDF5 output for the GTM Imaging Band Imagery Environmental Data Record (EDR), GTM Moderate Band Imagery EDR, and GTM Near Constant Contrast (NCC) Band Imagery EDR.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 or later required).

Enhancements to GTMIMAGERY include:

• process compressed and/or chunked HDF5 input files (e.g., from NOAA CLASS beginning 8/15/14);
• process single-granule Sensor Data Records (SDRs) and swaths (i.e., where all acquired data is output per swath, including partial granules);
• optionally provide a previous and next granule;
• updated Lookup Tables (LUTs).

The GTM Imagery algorithm was provided to the DRL by the JPSS Ground Project.  The DRL ported this algorithm for execution outside of the IDPS global processing environment for direct readout applications.

GTMIMAGERY SPA users are encouraged to take advantage of the DRL’s generalized H2G SPA data visualization tool for use with GTMIMAGERY outputs, which includes standard and custom configuration capability. The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications to create geolocated GeoTIFF images, as well as jpeg and png browse images for parameter datasets in SNPP and EOS products.  H2G also creates standard true color images and user-defined false color images.  The H2G_SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 or later required).

Click here to access GTMIMAGERY_SPA v1.5.08.04.

Click here to access the GTMIMAGERY_SPA v1.5.08.04 User's Guide.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

VIIRS-AF SPA v1.3.1 Released - 8/6/2014

The DRL is pleased to announce the release of the VIIRS-AF_SPA v1.3.1. The VIIRS Active Fires Science Processing Algorithm (VIIRS-AF SPA) primarily uses brightness temperatures derived from bands M13 and M15 to detect fires.  
Enhancements to this SPA include:

• Update of the algorithm to version 1.3.1 as received from the Land Science Team.  This version of the algorithm has been synchronized with its heritage MODIS counterpart (i.e., MOD14).  VIIRS-AF_SPA v1.3.1 includes all relevant changes made to the MOD14 algorithm as part of the formal MODIS algorithm evolution (presently C6 series) process.
   
• Capability to accept compressed HDF5 input files.

Please be advised this is a NASA evaluation Level 2 algorithm (follow-on to the previous VIIRS-AF v1.2.9) and that the International Land Direct Readout Coordinating Committee (ILDRCC) is conducting an analysis relevant to user needs for direct readout applications and providing perspective back to the science team.  Revisions occur frequently so it is important to keep this algorithm up to date.

The VIIRS-AF SPA uses bands M5, M7, M11 and M16 to reject false alarms and to mask clouds. The input to the VIIRS-AF are SDR files (e.g., output from C-SDR_SPA, CSPP, and VIIRS-SDR_SPA packages as well as corresponding files produced by the NOAA CLASS). The VIIRS-AF output is the same format as the MOD14_SPA (formatted in HDF4). The outputs are a two-dimensional fire mask in HDF and a fire location list text file. The VIIRS-AF SPA functions in two modes:  Standalone, or as an IPOPP plug-in (Version 2.3 or later required).
 
Note: IPOPP users participating in the evaluation may easily install VIIRS-AF_SPA v1.3.1 as a plug-in to execute concurrently with any pre-existing EOS and SNPP algorithms, which is relevant for mitigating measurement ambiguity as part of the intercomparison process.

Since the VIIRS-AF output is the same format as MOD14, its output may be presented as input to an existing decision support system.  Also, in combination with the H2G_SPA v2.3, the VIIRS-AF output may be reformatted as a GeoTIFF that is GIS-ingestible.

Click here to access VIIRS-AF SPA v1.3.1.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See output from the latest algorithms that presently exist in in IPOPP at the DRL's Recent Data Products Gallery.

RT-STPS v5.6 Released - 7/10/2014

The DRL is pleased to announce the release of the RT-STPS v5.6.  The Real-time Software Telemetry Processing System (RT-STPS) is a generalized CCSDS data processing package. RT-STPS is a Java application that ingests telemetry data from a spacecraft transmission in real-time or from an equivalent demodulated file, performs multi-mission protocol processing including link-layer artifact corrections, provides data integrity statistics, and produces output to a file or TCP/IP socket.  

RT-STPS is preconfigured to enable the Direct Readout Community to acquire transmissions from Terra/Aqua and SNPP and create mission-specific formatted output.  The preconfigured output formats are: Raw Data Records (RDRs) for the SNPP VIIRS, CrIS ATMS, and OMPS instruments; as well as Production Data Sets for Terra MODIS and Aqua MODIS, AIRS, AMSR, AMSU, CERES, and HSB instruments. 

Enhancements to RT-STPS v5.6 include:

• improved HDF5 resource management;
• updated Linux Java Service Wrapper (JSW) when RT-STPS is implemented as a system service;
• improved Reed-Solomon capability for interleave depths 1, 2, 3, and 5;
• improved packaging for multi-platform use.

Click here to access RT-STPS v5.6 at the Direct Readout Web Portal.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See output from the latest algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

C-SDR SPA v1.8 Released - 6/27/2014

The DRL is pleased to announce the release of C-SDR SPA v1.8.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) processes SNPP VIIRS, ATMS and CrIS Raw Data Record (RDR) HDF5 files into corresponding instrument-specific and mission-compliant HDF5 SDR and Geolocation single granule or swath products.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.3 required).

It is encouraged that users update to this version of the VIIRS, CrIS and ATMS SDR algorithms to achieve highest fidelity while ensuring transparency for any future HRD downlink content reconfiguration.  The update of the C-SDR SPA within an existing operational instance of IPOPP is easy to implement.

Enhancements to C-SDR SPA v1.8 include the update to v1.5.08.04 (Mx8.4) of the official operational SDR software.
Note:  The C-SDR is created using the Algorithm Development Library (ADL), which has been configured by the SNPP/JPSS algorithm team for added flexibility yielding added features unique for Direct Readout applications.  The C-SDR receives as input mission-compliant RDRs produced by the RT-STPS v5.3 or later.  The C-SDR accepts RDRs produced by the NOAA CLASS.  The C-SDR produces output either in swath or single granule output.

Click here to access C-SDR SPA v1.8.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See output from the latest algorithms that presently exist in in IPOPP from DRL and colleagues at the DRL Recent Data Products Gallery.

C-SDR SPA v1.7 Released - 5/7/2014

Click here to access C-SDR SPA v1.7.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest VIIRS, OMPS and MODIS algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

IPOPP v2.3 Released - 4/4/2014

The DRL is pleased to announce the release of the International Polar Orbiter Processing Package (IPOPP) Version 2.3.  IPOPP v2.3 produces SNPP VIIRS, CrIS, ATMS, and OMPS output, while still producing Terra/Aqua MODIS output in the same package.  

Enhancements to IPOPP v2.3 include:

• A new beta version Dashboard GUI improves the user experience significantly for chain process configuration and process monitoring. Graphical depiction of data handling agents, Science Processing Algorithms (SPAs) and their input/output relationships makes configuration easy and intuitive.
• C-SDR_SPA has been updated to v1.6 (Mx8.0), and VIIRS-AF_SPA has been updated to v1.2.9.
• JPSS GTMImagery SPA (w/Near Constant Contrast) and MODIS Burnscar SPA are included in IPOPP for the first time.
• VIIRS SPAs have been updated to provide improved support for compressed and/or chunked HDF5 input files. This will result in significant reduction of SPA execution times when processing these input files.
• The User’s Guide has been updated to describe operation of the beta version Dashboard GUI and other new features in Version 2.3, which is in direct response to user request.

This processing package contains both the data processing framework and the SPAs to form a generalized autonomous data processing basis that may be uniquely value-added by our commercial colleagues.  Further, the generalized architecture is an excellent basis for algorithm evaluations; heterogeneous implementation where the core resource management is verbose and easily referenced yielding ambiguity mitigation when performing detailed intercomparisons.

IPOPP ingests SNPP Raw Data Record (RDR) files and Terra/Aqua Production Data Set (PDS) files to produce products. For real-time processing (e.g., direct broadcast downlink), IPOPP automates multi-level processing of the ingested raw data and produces SNPP Sensor Data Records (SDRs), SNPP Environmental Data Records (EDRs), and Terra/Aqua Level-1 and Level-2 products. IPOPP also ingests RDR or PDS files from the global processing archives.

It is important to realize that the SNPP algorithms continue to evolve under the guidance of the science teams.  User community feedback continues to influence the evolution of the package as evidenced by this release.  We give special thanks to the ILDRCC and IDROSC as well as the ITWG constituencies.

IPOPP v2.3  includes the following SNPP SPAs (operational and evaluation) now available in standalone form or as an IPOPP plug-in.  Special thanks to the Land, Atmosphere, and Ozone Science Teams:

• C-SDR, to produce VIIRS, CrIS and ATMS mission-compliant HDF5 SDR and Geolocation swath products
• ActiveFires, to produce the VIIRS Active Fires/Fire Mask
• Cloud Mask, to produce the VIIRS Cloud Mask product
• Aerosol, to produce the VIIRS Aerosol Optical Thickness (AOT), Aerosol, Suspended Matter, Aerosol Model Information, and the Aerosol Geolocation
• Surface Reflectance (SurfReflect), to produce the VIIRS Surface Reflectance
• Vegetation Index (VegIndex), to produce the VIIRS Vegetation Index
• Cloud Optical Properties (COP), to produce the VIIRS Cloud Optical Properties and the VIIRS Ice & Night Water Cloud Top Temperature
• Snow Cover (SnowCov), to produce the VIIRS Snow Cover Binary Map and VIIRS Snow Cover Fraction
• Land Surface Temperature (LST), to produce the VIIRS Land Surface Temperature
• CVIIRS, to produce the VIIRS Corrected Reflectance
• VIIRS-AF, to produce VIIRS Active Fires/Fire Mask
• GTMImagery, to produce the VIIRS GTM Imaging Band Imagery EDR; VIIRS GTM Moderate Band Imagery EDR; and VIIRS GTM Near Constant Contrast (NCC) Band Imagery EDR
• OMPSnadir (beta evaluation), to produce Total Column SO2, UV Aerosol Index, Total Column Ozone and Effective Surface Reflectivity (RT-STPS 5.5 or later required)
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF4 and HDF5 products, while also providing capability (via configuration file) to produce value-added products and imagery as input to decision support systems.  

IPOPP v2.3 also includes the latest versions of these Terra/Aqua SPAs now available as standalone or IPOPP plug-ins on the DRL Web Portal.  Special thanks to OBPG, CIMSS, and the MODIS Land Team for their science-sanctioned algorithm contributions:

• MODISL1DB, to create MODIS Geolocated/Calibrated product
• CREFL, to create the MODIS Corrected Reflectance
• GBAD, to create ephemeris and attitude files (input for Aqua L1)
• IMAPP, to create the MODIS Level 2 Cloudmask, Cloudtop Properties, Cloud Phase, Atmospheric Profiles, and Aerosol
• L2GEN, to create the MODIS Level 2 Ocean Color (including Chlor-a) and Sea Surface Temperature (SST)
• MOD14, to create the MODIS Level 2 Fire Mask
• MODLST, to create the MODIS Level 2 Land Surface Temperature (LST)
• NDVIEVI, to create the MODIS Level 2 Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI)
• BURNSCAR, to create the MODIS Level 3 Corrected Reflectance Daily Composite; MODIS Level 3 Active Fires Daily Composite; MODIS Level 3 Prescar (Standalone Mode only); and MODIS Level-3 Burnscar (Standalone Mode only)
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF, while also providing capability (via configuration file) to produce value-added products and imagery as input to decision support systems.

Click here to access IPOPP v2.3. A beta downloader may be utilized from within the download area that will improve overall download performance of this large package.

Note: Download the beta downloader_ipopp_2.3.sh script (the previous download method still exists) and execute to fully automate and verify the transfer of the complete IPOPP v2.3 package (DRL-IPOPP_2.3.tar.gz).  Progress indicators will appear as the package is downloaded, assembled and verified. When the entire process is complete the script will return the message "File successfully downloaded." 

We appreciate the useful user feedback that has influenced this release.  The IPOPP v2.3 User's Guide will continue to evolve proportional to user feedback.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest VIIRS, OMPS and MODIS algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

GTMIMAGERY_SPA v1.5.07.02 Released - 2/5/2014

The Direct Readout Laboratory (DRL) is pleased to announce the release of the GTM Imagery SPA (Version 1.5.07.02).

The VIIRS Ground Track Mercator Imagery Science Processing Algorithm (GTMIMAGERY SPA) produces mission-compliant HDF5 output for the GTM Imaging Band Imagery Environmental Data Record (EDR), GTM Moderate Band Imagery EDR, and GTM Near Constant Contrast (NCC) Band Imagery EDR.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.2 or later required).

The GTM Imagery algorithm was provided to the DRL by the JPSS Ground Project.  The DRL ported this algorithm for execution outside of the IDPS global processing environment.

The GTMIMAGERY SPA incorporates the following features:

• Near Constant Contrast (NCC) visible imagery maintains apparent contrast under daytime conditions, nighttime conditions and during transition from daytime to nighttime or vice versa (i.e., products are especially useful for areas in near-constant darkness, and/or at the instrument day/night transition point).
• GTM projection reduces the amount of distortion caused when satellite images of the ellipsoidal Earth are viewed in a flat page.
• Products are easily displayed for human viewing, and especially well-suited for visual analysis of Snow Cover, Cloud Cover, and Sea Ice.
• Products do not contain the bow-tie effect, caused when edges of the swath/granule overlap the preceding or succeeding swath/granule.

GTMIMAGERY SPA users are encouraged to take advantage of the DRL’s generalized H2G SPA data visualization tool for use with GTMIMAGERY outputs, which includes standard and custom configuration capability. The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications to create geolocated GeoTIFF images, as well as jpeg and png browse images for parameter datasets in SNPP and EOS products.  H2G also creates standard true color images and user-defined false color images.  The H2G_SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.2 or later required).

Click here to access GTMIMAGERY_SPA v1.5.07.02.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

See output from the latest algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

RT-STPS v5.5 Released - 12/20/2013

The Direct Readout Laboratory (DRL) is pleased to announce the release of the RT-STPS v5.5.  The Real-time Software Telemetry Processing System (RT-STPS) is a generalized CCSDS data processing package. RT-STPS is a Java application that ingests telemetry data from a spacecraft transmission in real-time or from an equivalent demodulated file, performs mult-misson protocol processing including link-layer artifact corrections, provides data integrity statistics, and produces output to a file or TCP/IP socket.  

RT-STPS is preconfigured to enable the direct readout community to acquire transmissions from Terra/Aqua and SNPP and create output mission-specific formatted output.  The  preconfigured output formats are: Raw Data Records (RDRs) for the SNPP VIIRS, CrIS ATMS, and OMPS instruments as well as Production Data Sets for Terra MODIS and Aqua MODIS, AIRS, AMSR, AMSU, CERES, and HSB instruments.  RT-STPS functions in two modes:  Standalone (Windows or Linux), or as an IPOPP plug-in (Linux only). 

Enhancements to RT-STPS v5.5 for SNPP include:

• capability to produce SNPP OMPS instrument RDRs;
• updates to the SNPP RDR formatting;
• improved co-temporal alignment of Spacecraft Diary to science data;
• capability to dynamically update leap second file.

Click here to access RT-STPS v5.5 at the Direct Readout Web Portal.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See output from the latest VIIRS, OMPS and MODIS algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

IPOPP v2.2 Released - 12/5/2013

The Direct Readout Laboratory (DRL) is pleased to announce the release of the International Polar Orbiter Processing Package (IPOPP) Version 2.2.  IPOPP v2.2 produces SNPP VIIRS, CrIS, ATMS, and OMPS output, while concurrently producing Terra/Aqua MODIS output.

Enhancements to IPOPP v2.2 include:

• seamless processing of both real-time and non-real-time (useful for archive reprocessing) instrument data in a single IPOPP installation, eliminating the former dedicated IPOPP installations for real-time and archive reprocessing modes;
• easier to operate and maintain thereby enhancing the user experience that includes significant consolidation of the User's Guide;
• significantly reduced IPOPP initialization time, particularly useful for sites with limited network bandwidth;
• inclusion of updated operational Science Processing Algorithms (SPAs);
•  inclusion of the new VIIRS-AF SPA (beta evaluation version);
•  inclusion of the new OMPSnadir SPA (beta evaluation version).

This processing package contains both the data processing framework and the optional SPAs to form a generalized autonomous data processing basis that may be uniquely value-added by our commercial colleagues.

IPOPP ingests SNPP Raw Data Record (RDR) files and Terra/Aqua Production Data Set (PDS) files to produce products. For real-time processing (e.g., direct broadcast downlink), the IPOPP automates multi-level processing of the ingested raw data and produces SNPP Sensor Data Records (SDRs), SNPP Environmental Data Records (EDRs), and Terra/Aqua Level-1 and Level-2 products. IPOPP also ingests RDR or PDS files from the global processing archives.

It is important to realize that the SNPP algorithms continue to evolve under the guidance of the science teams.  User community feedback continues to influence the evolution of the package as evidenced by this release.  We give special thanks to the ILDRCC and IDROSC as well as the ITWG constituencies.

IPOPP v2.2  includes updated versions of these SNPP SPAs (operational and evaluation) now available as standalone or IPOPP plug-ins on the DRL Web Portal.  Special thanks to the Land, Atmosphere, and Ozone Science Teams:

• C-SDR, to produce VIIRS, CrIS and ATMS mission-compliant HDF5 SDR and Geolocation swath products
• ActiveFires, to produce the VIIRS Active Fires/Fire Mask
• Cloud Mask, to produce the VIIRS Cloud Mask product
• Aerosol, to produce the VIIRS Aerosol Optical Thickness (AOT), Aerosol, Suspended Matter, Aerosol Model Information, and the Aerosol Geolocation
• Surface Reflectance (SurfReflect), to produce the VIIRS Surface Reflectance
• Vegetation Index (VegIndex), to produce the VIIRS Vegetation Index
• Cloud Optical Properties (COP), to produce the VIIRS Cloud Optical Properties and the VIIRS Ice & Night Water Cloud Top Temperature
• Snow Cover (SnowCov), to produce the VIIRS Snow Cover Binary Map and VIIRS Snow Cover Fraction
• Land Surface Temperature (LST), to produce the VIIRS Land Surface Temperature
• CVIIRS (beta evaluation), to produce the VIIRS Corrected Reflectance
• VIIRS-AF (beta evaluation), to produce VIIRS Active Fires/Fire Mask
• OMPSnadir (beta evaluation), to produce Total Column SO2, UV Aerosol Index, Total Column Ozone and Effective Surface Reflectivity (RT-STPS 5.4 or later required)
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF4 and HDF5 products (support for evaluation algorithms included)

IPOPP v2.2 also includes the latest versions of these Terra/Aqua SPAs now available as standalone or IPOPP plug-ins on the DRL Web Portal (may be run concurrently w/SNPP SPAs).  Special thanks to OBPG, CIMSS, and the MODIS Land Team for their science-sanctioned algorithm contributions:

• MODISL1DB, to create the MODIS Geolocated/Calibrated product
• CREFL, to create the MODIS Corrected Reflectance
• GBAD, to create ephemeris and attitude files (input for Aqua L1)
• IMAPP, to create the MODIS Level 2 Cloudmask, Cloudtop Properties, Cloud Phase, Atmospheric Profiles, and Aerosol
• L2GEN, to create the MODIS Level 2 Ocean Color (including Chlor-a) and Sea Surface Temperature (SST)
• MOD14, to create the MODIS Level 2 Fire Mask
• MODLST, to create the MODIS Level 2 Land Surface Temperature (LST)
• NDVIEVI, to create the MODIS Level 2 Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI)
• H2G, to create GeoTIFFs from HDF products

Click here to access IPOPP v2.2  A downloader may now be utilized from within the download area that will improve overall download performance of this large package.

Note:  Download the beta downloader_ipopp_2.2.sh script (the previous download method still exists) and execute to fully automate and verify the transfer of the complete IPOPP v2.2 package (DRL-IPOPP_2.2.tar.gz).  Progress indicators will appear as the package is downloaded, assembled and verified. When the entire process is complete the script will return the message "File successfully downloaded."

We appreciate the useful user feedback that has influenced this release.  The User's Guide will continue to evolve proportional to user feedback.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

We encourage users to experience the utility of the MyDRL Forums that you create.
 
See output from the latest VIIRS, OMPS and MODIS algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

H2G_SPA v2.3 Released - 10/17/2013

On behalf of the JPSS and SNPP Missions as well as the NASA Direct Readout Program, the Direct Readout Laboratory (DRL) is pleased to announce the release of the H2G_SPA (Version 2.3).

The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications to create geolocated GeoTIFF images, jpeg browse images, and png browse images for parameter datasets in SNPP products and EOS products.  H2G also creates standard true color images and user-defined false color images.  The H2G_SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

Enhancements to H2G_SPA v2.3 include:

• addition of documentation and test script support for SNPP VIIRS EDR products (please refer to Table 2 in the H2G_SPA v2.3 User's Guide);
• extended support for VIIRS Ocean Color and SST science products;
• extended support for OMPS SO2, Aerosol Index, Ozone and Reflectivity science products;
• ability to generate imagery from Daily composite products (like the Level 2G products produced by the MODIS and VIIRS Burnscar SPAs);
• ability to generate a high resolution VIIRS True Color image product using the VIIRS I1 Band;
• ability to support global mosaiced image products.

Special thanks to the IPOPP Alpha User constituency and mission colleagues.

The geolocated GeoTIFF images created by H2G are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The jpeg and png browse images are optionally enhanced with vector overlays (e.g., land/sea and political boundaries).

The H2G_SPA currently allows the user to select geographic and stereographic projections. Inclusion of other projections is under consideration for future releases of H2G_SPA.

The H2G_SPA incorporates features to enhance output images and facilitate scientific interpretation:

• while creating images from a primary dataset, a secondary dataset may be used to mask appropriate areas;
• user-defined color map and user-defined scaling capabilities for conversion of dataset values into image pixels;
• choice of either geographic or stereographic projection for the output image;
• optional subsetting of swaths or fixed granules into user-defined regions of interest;
• optional mosaicing of multiple swaths or fixed granules;
• jpeg and png browse images with legends;
• fire pixel overlays on other imagery (e.g., fire pixel overlays on TrueColor image).

Click here to access H2G_SPA v2.3.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See output from the latest MODIS and VIIRS algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

C-SDR_SPA v1.5 Released - 9/26/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of C-SDR SPA v1.5.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) processes SNPP VIIRS, ATMS and CrIS Raw Data Record (RDR) HDF5 files into corresponding instrument-specific and mission-compliant HDF5 SDR and Geolocation swath products.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

Enhancements to C-SDR SPA v1.5 include:

• update to v1.5.07.01 (or Mx7.1) operational software;
• compliant with CrIS Full Spectral Resolution (FSR) Mode;
• compatible with Lookup Tables (LUTs) produced from mid-2012 to present (relevant for reprocessing).

Note:  Users are encouraged to update to this latest version.

The C-SDR_SPA v1.5 package represents the Direct Readout implementations from the operational VIIRS, CrIS and ATMS SDR algorithm baseline to produce swath products (see note below) with no VIIRS cross-granule dependency (more data per DR acquisition for VIIRS).

Note:  This C-SDR is created using the Algorithm Development Library (ADL), which has been configured by the SNPP/JPSS algorithm team for added flexibility yielding added features unique for Direct Readout applications.  The C-SDR receives as input mission-compliant RDRs produced by the RT-STPS v5.3 or later.  The C-SDR accepts RDRs produced by the NOAA CLASS.  The C-SDR produces output either in swath or fixed granule output.

Click here to access the C-SDR_SPA v1.5.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See output from the latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

MOD14_SPA v6.2.1 Released - 8/30/2013

On behalf of the NASA Direct Readout Program, the DRL is pleased to announce the release of the MOD14_SPA v6.2.1.  The Level 2 MODIS Active Fire Product (MOD14) Science Processing Algorithm (MOD14_SPA) primarily uses brightness temperatures derived from MODIS 4 and 11 micrometer channels (bands 21, 22 and 31) to detect fires.  MODIS bands 1, 2, 7 and 32 are used to reject false alarms and to mask clouds.  The algorithm reads a MODIS 1-km Level 1B file along with the associated geolocation file and identifies active fires.  The output is a two-dimensional fire mask in Hierarchical Data Format (HDF).  Additionally the SPA creates a text file containing useful information (latitude, longitude, acquisition date, channel 21/22 brightness temperature, Fire Radiative Power [FRP], and detection confidence) for each fire pixel detected.  The MOD14_SPA functions in two modes: Standalone, or as an IPOPP plug-in.

Enhancements to MOD14_SPA v6.2.1 include:

• optional extension of processing to include oceans and other large bodies of water;
• additional test to reject false fire pixels caused by small forest clearings;
• dynamic adjustment of potential fire thresholds;
• improved cloud mask;
• improved sun glint rejection.

Note: This MODIS Collection 6 algorithm is the official algorithm from the MODAPS global processing environment.  This version of the MOD14 algorithm functionally corresponds to the recently released VIIRS evaluation algorithm (VIIRS-AF, released 8/8/2013); the vetting process includes end-user perspective via the ILDRCC (for direct readout applications).

Click here to access the MOD14_SPA v6.2.1.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See output from the latest MODIS and VIIRS algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

VIIRS-AF_SPA v1.2.0 Released - 8/8/2013

On behalf of the NASA Direct Readout Program, the DRL is pleased to announce the release of the VIIRS-AF_SPA v1.2.0. The VIIRS Active Fires Science Processing Algorithm (VIIRS-AF SPA) primarily uses brightness temperatures derived from bands M13 and M15 to detect fires.  

Please be advised this is an evaluation Level-2 (L2) algorithm (follow-on to the previous VIIRS-AF v1.0.7).  At present the International Land Direct Readout Coordinating Committee (ILDRCC) is conducting a detailed evaluation relevant to user needs for direct readout applications.  This algorithm is being updated frequently and in sync with ILDRCC feedback.

Special thanks to the ILDRCC and the Land Science Team for their guidance! This VIIRS Rapid Response Algorithm is the result of end-user application perspective from the DR community, and is demonstrative of the applications-focused approach that is the IPOPP Alpha Program.  
 
The VIIRS-AF SPA uses bands M5, M7, M11 and M16 to reject false alarms and to mask clouds. The input to the VIIRS-AF are SDR files (e.g., output from C-SDR_SPA, CSPP, and VIIRS-SDR_SPA packages as well as corresponding files produced by the NOAA CLASS). The VIIRS-AF output is the same format as the MOD14_SPA (the MODIS Active Fire Algorithm). The output is a two-dimensional fire mask in HDF4. The VIIRS-AF SPA functions in two modes:  Standalone, or as an IPOPP plug-in (Version 2.1 or later required).
 
Note: IPOPP users may install VIIRS-AF_SPA v1.2.0 as a plug-in to execute concurrent with any pre-existing L2 and EDR algorithms with ease.  The VIIRS-AF output is the same format as the predecessor MOD14, so its output may be presented as input to an existing decision support system.  Also, in combination with the H2G_SPA v2.2 (or later), the VIIRS-AF output may be reformatted as a GeoTIFF that is GIS-ingestible.  
 
Enhancements to the VIIRS-AF SPA v1.2.0 include:

• retrieval of VIIRS Fire Radiative Power (FRP);
• improved quality checking to help eliminate spurious fire pixels caused by problematic input data;
• capability to produce a fire-location text file containing the latitude, longitude, Brightness Temperature of band M13, along scan and along track dimensions, detection confidence, and FRP for all fire pixels;
• improved ancillary data and granulation module.

Click here to access the VIIRS-AF_SPA v1.2.0.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

SNOWCOV_SPA v1.5.06.07 Released - 7/18/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the SNOWCOV_SPA v1.5.06.07.  The VIIRS Snow Cover Science Processing Algorithm (SNOWCOV_SPA) takes as input the VIIRS I1, I2, I3, I5, M15, and M16 band Sensor Data Record (SDR) products; the VIIRS M-Band Terrain-Corrected Geolocation product; the VIIRS I-Band Terrain-Corrected Geolocation product; the VIIRS Cloud Mask Intermediate Product (IP); the VIIRS Aerosol Optical Thickness IP; and the VIIRS Cloud Optical Properties IP and produces the mission-compliant Snow Binary Map Environmental Data Record (EDR) and Snow Fraction EDR. The SPA functions in two modes: Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the last of several VIIRS EDR algorithm releases that comprise the mission's updated Land and Atmosphere EDR suite now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and the algorithms will accept input from a direct readout environment or from the NOAA CLASS. 

Note:  For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade an operational IPOPP v2.1 SNPP EDR Suite.  For added convenience users may access the "DRL Highlights" section (center of DRL home page) to reference the SPA release sequence beginning from the Active Fire SPA to the present:

Enhancements to SNOWCOV _SPA v1.5.06.07 include improved metadata.

Click here to access the SNOWCOV _SPA v1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

COP_SPA v1.5.06.07 Released - 7/17/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the COP_SPA v1.5.06.07.  The VIIRS Cloud Optical Properties (COP) Science Processing Algorithm (COP_SPA) takes as inputs VIIRS M5, M8, M10, M11, M12, M14, M15, and M16 band Sensor Data Record (SDR) products; the VIIRS M-Band Terrain-Corrected Geolocation product; and the VIIRS Cloud Mask Intermediate Product (IP) and meteorological ancillary.  The SPA produces the mission-compliant VIIRS Cloud Optical Properties IP and the VIIRS Ice & Night Water Cloud Top Temperature HDF5 IP.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the seventh of several VIIRS EDR algorithm releases that will occur, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and the algorithms will accept input from a direct readout environment or from the NOAA CLASS.  The remaining Mx6.7 release for this EDR suite update will be snow cover.  

Note:  For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade an operational IPOPP v2.1 EDR suite.  For added convenience users may access the DRL "Highlights" section (center of DRL home page) to reference the SPA release sequence beginning from the Active Fire SPA to the present:

Enhancements to COP _SPA v1.5.06.07 include:

• improved ancillary logic;
• improved metadata.

Click here to access the COP _SPA v1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

VEGINDEX_SPA v1.5.06.07 Released - 7/16/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the VEGINDEX_SPA v1.5.06.07.  The VIIRS Vegetation Index (VI) Science Processing Algorithm takes as inputs VIIRS I1 and I2 band Sensor Data Record (SDR) products; the VIIRS I-band Terrain-Corrected Geolocation product; and the VIIRS Surface Reflectance Intermediate Product (IP) and produces the VIIRS Vegetation Index EDR product.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the sixth of several VIIRS EDR algorithm releases that will occur over the next several days, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and the algorithms will accept input from a direct readout environment or from the NOAA CLASS.  The remaining Mx6.7 releases for this EDR suite update will include cloud optical properties and snow cover.  

Note:  For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade the IPOPP v2.1 EDR suite.  For added convenience users may access the "DRL Highlights" section (center of DRL home page) to reference the SPA release sequence beginning from Active Fire SPA to the present.

Enhancements to VEGINDEX _SPA v1.5.06.07 include improved metadata.

Click here to access the VEGINDEX _SPA v1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

SURFREFLECT_SPA v1.5.06.07 Released - 7/15/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the SURFREFLECT_SPA v1.5.06.07.  The VIIRS Surface Reflectance Science Processing Algorithm (SURFREFLECT_SPA) takes as inputs VIIRS M-band Sensor Data Record (SDR) products; VIIRS I-band SDR products; the VIIRS M-Band Terrain-Corrected Geolocation product; the VIIRS I-Band Terrain-Corrected Geolocation product; the VIIRS Cloud Mask Intermediate Product (IP); the Aerosol Optical Thickness IP; and the Aerosol Model Index IP and meteorological ancillary.  The algorithm produces the mission-compliant VIIRS Surface Reflectance HDF5 IP.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the fifth of several VIIRS EDR algorithm releases that will occur over the next several days, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and the algorithms will accept input from a direct readout environment or from the NOAA CLASS.  The subsequent Mx6.7 releases will include: vegetation index, cloud optical properties and snow cover.  

Note:  For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade the IPOPP v2.1 EDR suite.  For added convenience users may access the "DRL Highlights" section (center of DRL home page) to reference the SPA release sequence beginning from Active Fire SPA to the present.

Enhancements to SURFREFLECT_SPA v1.5.06.07 include:

• improved ancillary logic;
• Improved metadata.

Click here to access the SURFREFLECT_SPA V1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

AEROSOL_SPA v1.5.06.07 Released - 7/12/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the AEROSOL_SPA v1.5.06.07.  The VIIRS Aerosol Science Processing Algorithm (AEROSOL_SPA) takes as input VIIRS M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11, M12, M15, and M16 band Sensor Data Record (SDR) products; the VIIRS M-Band Terrain-Corrected Geolocation product; and the VIIRS Cloud Mask Intermediate Product (IP) and meteorological ancillary, and produces the mission-compliant Aerosol Optical Thickness (AOT) IP; Aerosol Model Index (AMI) IP; Aerosol Environmental Data Record (EDR); Suspended Matter (SM) EDR; and Aerosol Geolocation HDF5 product.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the fourth of several VIIRS EDR algorithm releases that will occur over the next several days, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and the algorithms will accept input from a direct readout environment or from the NOAA CLASS.  The subsequent Mx6.7 releases will include: surface reflectance, vegetation index, cloud optical properties and snow cover.  

Note:  For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade the IPOPP v2.1 EDR suite.

Enhancements to AEROSOL_SPA v1.5.06.07 include:

• improved direct readout ancillary granulation approach that positively affects both data product fidelity and processing latency for direct readout application;
• improved ancillary logic;
• improved metadata.

Click here to access the AEROSOL_SPA V1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

LST_SPA v1.5.06.07 Released - 7/11/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the LST_SPA v1.5.06.07.  The VIIRS Land Surface Temperature (LST) Science Processing Algorithm (LST_SPA) takes as inputs the VIIRS M12, M13, M15, and M16 band Sensor Data Record (SDR) products; the VIIRS M-band Terrain-Corrected Geolocation product; the VIIRS Cloud Mask Intermediate Product (IP); and (optionally) the Aerosol Optical Thickness (AOT) IP, and produces the VIIRS LST Environmental Data Record (EDR) product.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the third of several VIIRS EDR algorithm releases that will occur over the next several days, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and the algorithms will accept input from a direct readout environment or from NOAA CLASS.  The subsequent Mx6.7 releases will include: aerosols, surface reflectance, vegetation index, cloud optical properties and snow cover.  

Note:  For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade the IPOPP v2.1 VIIRS EDR suite.

Enhancements to LST_SPA v1.5.06.07 include:

• improved DR ancillary granulation approach that positively affects both data product fidelity and processing latency for direct readout applications;
• improved metadata.

Click here to access the LST_SPA V1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

CLOUDMASK_SPA v1.5.06.07 Released - 7/10/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the CLOUDMASK_SPA v1.5.06.07.  The VIIRS Cloud Mask Science Processing Algorithm (CLOUDMASK_SPA) takes as input VIIRS I1, I2, I4, I5, M1, M4, M5, M7, M8, M9, M10, M11, M12, M13, M14, M15, and M16 band Sensor Data Record (SDR) products; the VIIRS M-Band Terrain-corrected Geolocation product; and the VIIRS Active Fire Product and meteorological ancillary.  The SPA produces the mission-compliant Cloud Mask IP HDF5 product.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the second of several VIIRS EDR algorithm releases that will occur over the next several days, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package).  The subsequent Mx6.7 releases will include: land surface temperature, aerosols, surface reflectance, vegetation index, cloud optical properties and snow cover.

Enhancements to CLOUDMASK_SPA v1.5.06.07 include:

• improved DR ancillary granulation approach that positively affects both data product fidelity and processing latency (will supersede QSIP SPA) for direct readout applications;
• improved ancillary logic;
• improved metadata.

Note:  Once the ACTIVEFIRES_SPA v1.5.06.07 and CLOUDMASK_SPA v1.5.06.07 have been installed/updated into IPOPP v2.1, the QSIP SPA included with IPOPP v2.1 should be disabled to eliminate unnecessary processing load.  Refer to the IPOPP v2.1 User Guide for instructions to disable SPAs in IPOPP.   For IPOPP Mode installation it is advised to observe the SPA update release order to seamlessly upgrade the IPOPP v2.1 VIIRS EDR suite.

Click here to access the CLOUDMASK_SPA V1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

ACTIVEFIRES_SPA v1.5.06.07 Released - 7/9/2013

On behalf of the JPSS Program, the DRL is pleased to announce the release of the ACTIVEFIRES_SPA v1.5.06.07.  The VIIRS Active Fires Science Processing Algorithm (ACTIVEFIRES_SPA) takes as inputs the VIIRS M5, M7, M11, M13, M15, and M16 band Sensor Data Record (SDR) products and the VIIRS M-Band Terrain-Corrected Geolocation product, and creates the official mission VIIRS Active Fires Application Related Product (ARP) as well as the Fire Mask (extended capability) to produce swath or fixed-sized granule output.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

This is the first of several VIIRS EDR algorithm releases that will occur over the next several days, which comprise the mission's Land and Atmosphere Products now available for direct readout applications.  For the first time users may access the mission algorithms for implementation in standalone form (outside of IPOPP, or any processing package), and will accept input from a direct readout environment or from NOAA CLASS.  The subsequent Mx6.7 releases will include: cloud mask, land surface temperature, aerosols, surface reflectance, vegetation index, cloud optical properties and snow cover.

Enhancements to ACTIVEFIRES_SPA v1.5.06.07 include:

• improved DR ancillary granulation approach that positively affects both data product fidelity and processing latency (will supersede QSIP SPA) for direct readout applications;
• Iimproved metadata.

Click here to access the ACTIVEFIRES_SPA V1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

VIIRS-SDR_SPA v1.5.06.07 Released - 5/30/2013

On behalf of the NASA Direct Readout Program, the DRL is pleased to announce the release of VIIRS-SDR SPA v1.5.06.07.  The VIIRS-SDR Science Processing Algorithm (SPA) takes an input RDR HDF5 file (containing a VIIRS Science RDR and Spacecraft Diary RDR) and produces mission-compliant HDF5 SDR and Geolocation swath products.  The Imagery Resolution SDRs contain the calibrated reflective and emissive data at 375m for Bands I1 through I5.  The Moderate Resolution SDR contains the calibrated reflective and emissive data at 750m for Bands M1 through M16.  The Day/Night Band (DNB) SDR contains the reflective data at 375m for the DNB Band.  The Geolocation products are available in Moderate, Imagery and DNB resolution.  The VIIRS-SDR SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

Enhancements to this SPA include the addition of VIIRS DNB terrain-corrected geolocation output. 

Special thanks to the NASA Land Science Team for this unique capability!

Click here to access the VIIRS-SDR_SPA V1.5.06.07.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

See the output from latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

BURNSCAR_ SPA v1.1 Released - 5/16/2013

On behalf of the NASA Direct Readout Program, the DRL is pleased to announce the release of the MODIS BURNSCAR_SPA Version 1.1.  The MODIS Level 3 Burn Scar Science Processing Algorithm (BURNSCAR_SPA) maps post-fire burned areas using daily composites of 500m MODIS corrected reflectance and daily composites of 1km MODIS active fire observations.  It identifies the date of burn, to the nearest day, for 500m grid cells within individual MODIS Level 3 tiles.  This implementation requires relatively modest mass storage and computational resources and is thus well suited for use in a Direct Readout environment.  This SPA functions in two modes:  Standalone, or as an IPOPP plug-in.

The MODIS Level 3 BURNSCAR_SPA was co-developed by the NASA Land Science Team and the DRL.  Special thanks to the ILDRCC for their valuable contributions and applications perspective during the development of this science-sanctioned algorithm.

Click here to access the BURNSCAR_SPA v1.1.

The BURNSCAR_SPA uses Level 2 Corrected Reflectance (CREFL) and Level 2 Active Fires (MOD14) swath products as inputs to produce intermediate outputs of CREFL and MOD14 daily composite tiles.  The intermediate outputs of CREFL and MOD14 Daily Composites are then used as inputs to produce the final post-fire PRESCAR and BURNSCAR tile products.

We encourage users to experience the utility of the MyDRL Forums that you create.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

VIIRS-SDR SPA v1.5.06.03 Released - 4/11/2013

On behalf of the JPSS Program and the NASA Direct Readout Program, the DRL is pleased to announce the release of VIIRS-SDR SPA v1.5.06.03. The VIIRS-SDR Science Processing Algorithm (SPA) takes an input RDR HDF5 file (containing a VIIRS Science RDR and Spacecraft Diary RDR) and produces mission-compliant HDF5 SDR and Geolocation swath products.  The Imagery Resolution SDRs contain the calibrated reflective and emissive data at 375m for Bands I1 through I5.  The Moderate Resolution SDR contains the calibrated reflective and emissive data at 750m for Bands M1 through M16.  The Day/Night Band (DNB) SDR contains the reflective data at 375m for the DNB Band.  The Geolocation products are available in Moderate, Imagery and DNB resolution.  The VIIRS-SDR SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.1 required).

Enhancements to v1.5.06.03 include:

• improved automated Look-up Table (LUT) retrievals;
• improved geolocation near the meridian.

Click here to access VIIRS-SDR SPA v1.5.06.03.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See output from the latest SNPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

VIIRS-AF SPA v1.0.7 Released - 3/12/2013

On behalf of the NASA Direct Readout Program, the Direct Readout Laboratory (DRL) is pleased to announce the release of the VIIRS-AF_SPA v1.0.7.  The VIIRS Active Fires Science Processing Algorithm (VIIRS-AF SPA) uses brightness temperatures derived from bands M13 and M15 to detect fires.  VIIRS-AF may be seamlessly implemented within existing direct readout decision support systems due to the close attention given to predecessor output for reasons of continuity.  Sample VIIRS-AF output (includes TIFF, PNG, KML via H2G SPA) may be viewed at the DRL Recent Data Products Gallery.

The VIIRS-AF SPA uses bands M5, M7, M11 and M16 to reject false alarms and to mask clouds.  The algorithm takes as input VIIRS Science Data Record (SDR) files, along with the associated geolocation file, and identifies active fires.  The output is a two-dimensional fire mask in Hierarchical Data Format (HDF).  The VIIRS-AF SPA functions in two modes:  Standalone, or as an IPOPP plug-in (Version 2.0b or later required).

Special thanks to the ILDRCC and the Land Science Team!  This VIIRS rapid response algorithm is the result of end-user application perspective from the DR community, and is demonstrative of the applications-focused approach that is the IPOPP Alpha Program. 

The input to the VIIRS-AF are SDR files (e.g., output from C-SDR_SPA, CSPP, and VIIRS-SDR_SPA packages as well as corresponding files produced by the NOAA CLASS).  The VIIRS-AF output is the same format as the MOD14_SPA (the MODIS Active Fire Algorithm).

Note:  Existing IPOPP users are encouraged to install VIIRS-AF_SPA v1.0.7.  Then H2G_SPA v2.2 accepts the VIIRS-AF output to produce the fire product in GeoTIFF (and/or browse imagery) form that is also GIS-ingestible.

Click here to access VIIRS-AF_SPA v1.0.7.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See outputfrom the latest S-NPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

IPOPP v2.1 Released - 3/6/2013

 On behalf of the JPSS and S-NPP Missions as well as the NASA Direct Readout Program, the Direct Readout Laboratory  (DRL) is pleased to announce the release of the International Polar Orbiter Processing Package (IPOPP) Version 2.1.  IPOPP v2.1 has the capability to create S-NPP VIIRS, CrIS and ATMS output while retaining the capability to create Terra/Aqua MODIS output.  

IPOPP v2.1 ingests S-NPP Raw Data Record (RDR) files and produces Sensor Data Records (SDRs) and Environmental Data Records (EDRs).  IPOPP v2.1 continues to ingest MODIS Level-0 Production Data Set (PDS), and produces MODIS Level-1 and Level-2 Products.  Enhancements to IPOPP v2.1 include:

• updated S-NPP Science Processing Algorithms (SPAs);
• improved Pass Manager tool for reprocessing (archive or near real-time);
• processing Monitor tool now supports S-NPP processing.

Special thanks to the IPOPP Alpha Program constituents and mission colleagues (from NOAA, DoD and NASA) for their technical contributions and applications perspective.

This processing package approach contains both the data processing framework and the SPAs to form a generalized autonomous data processing basis that may be uniquely value-added by our commercial colleagues.  

It is important to realize that the algorithms continue to evolve under the guidance of the science teams.  Community feedback remains the key to ensuring end-user application awareness for future releases.

IPOPP v2.1 includes the following Suomi NPP VIIRS SPAs:

• C-SDR, to produce VIIRS, CrIS and ATMS mission-compliant HDF5 SDR and Geolocation swath products
• CVIIRS, to produce the VIIRS Corrected Reflectance products
• ActiveFires, to produce the VIIRS Active Fires/Fire Mask product
• Cloud Mask, to produce the VIIRS Cloud Mask product
• Aerosol, to produce the VIIRS Aerosol Optical Thickness (AOT) product, Aerosol EDR, Suspended Matter EDR, Aerosol Model Information product and the Aerosol Geolocation EDR
• Surface Reflectance (SurfReflect), to produce the VIIRS Surface Reflectance product
• Vegetation Index (VegIndex), to produce the VIIRS Vegetation Index EDR
• Cloud Optical Properties (COP), to produce the VIIRS Cloud Optical Properties product and the VIIRS Ice & Night Water Cloud Top Temperature product
• Snow Cover (SnowCov), to produce the VIIRS Snow Cover Binary Map and VIIRS Snow Cover Fraction EDRs
• Land Surface Temperature (LST), to produce the VIIRS Land Surface Temperature EDR
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF4 and HDF5 products

Representative S-NPP EDR output from IPOPP, acquired for each overpass (from USDA Forest Service RSAC, Oregon State University COAS, as well as DRL), may be observed from the DRL’s Recent Data Products Gallery (click "select sites").

IPOPP v2.1 also includes the latest versions of these MODIS SPAs now available as standalone or IPOPP plug-ins on the DRL Web Portal.  Special thanks to OBPG, CIMSS, and the MODIS Land Team for their science-sanctioned algorithm contributions:

• MODISL1DB, to create MODIS Geolocated/Calibrated products
• CREFL, to create the MODIS Corrected Reflectance product
• GBAD, to create ephemeris and attitude files (input for Aqua L1)
• IMAPP, to create the MODIS Level 2 Cloudmask, Cloudtop Properties, Cloud Phase, Atmospheric Profiles, and Aerosol products
• L2GEN, to create the MODIS Level 2 Ocean Color (including Chlor-a) and Sea Surface Temperature (SST) products
• MOD14, to create the MODIS Level 2 Fire Mask product
• MODLST, to create the MODIS Level 2 Land Surface Temperature (LST) product
• NDVIEVI, to create the MODIS Level 2 Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) products
• H2G, to create GeoTIFFs from HDF products

Click here to access IPOPP v2.1.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See the output from latest land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

CVIIRS SPA v1.0 Released - 3/1/2013

On behalf of the NASA Direct Readout Program, the Direct Readout Laboratory (DRL) is pleased to announce the release of the CVIIRS_SPA v1.0.  The VIIRS Corrected Reflectance Science Processing Algorithm (CVIIRS_SPA) creates a VIIRS Corrected Reflectance output that may be used to produce true color imagery and other intermediate output(s) used for higher level processing.  CVIIRS may be seamlessly implemented within existing direct readout decision support systems due to the close attention given to predecessor output for reasons of continuity.

Sample CVIIRS true color output (includes TIFF, PNG, KML via H2G SPA) may be viewed at the DRL Recent Data Products Gallery.

The CVIIRS SPA performs a simple atmospheric correction with VIIRS visible, near-infrared, and short-wave infrared bands (bands M5, M7, M3, M4, M8, M10, M11, I1, I2, and I3).  It corrects for molecular (Rayleigh) scattering and gaseous absorption (water vapor and ozone) using climatological values for gas contents.  It requires no real-time input of ancillary data.  The Corrected Reflectance products created by CVIIRS are based on the 6S Radiative Transfer Model.  

Special thanks to the ILDRCC and the Land Science Team!  This VIIRS rapid response algorithm is the result of end-user application perspective from the DR community, and is demonstrative of the applications-focused approach that is the IPOPP Alpha Program.  

The input to the CVIIRS SPA are SDR files (e.g., accepts output from C-SDR_SPA, CSPP, and VIIRS-SDR_SPA packages as well as corresponding files produced by the NOAA CLASS).  The CVIIRS output is the same format as the CREFL_SPA (the MODIS Corrected Reflectance algorithm).  The CVIIRS functions in two modes:  Standalone, or as an IPOPP plug-in (Version 2.0b or later required).

Note:  existing IPOPP v2.0b users are encouraged to install CVIIRS_SPA v1.0 in IPOPP mode for improved quality (to supersede TrueColorGen_SPA).  The H2G_SPA v2.2 accepts the CVIIRS output to produce True Color Imagery in GeoTIFF (and/or browse imagery) form that is also GIS ingestible.  

Click here to access CVIIRS_SPA v1.0.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

We encourage users to experience the utility of the MyDRL Forums that you create.

See outputfrom the latest S-NPP land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

C-SDR SPA v1.4 Released - 2/27/2013

On behalf of the S-NPP/JPSS Mission and the NASA Direct Readout Program, the DRL is pleased to announce the release of C-SDR SPA v1.4.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) processes S-NPP VIIRS, ATMS and CrIS Raw Data Record (RDR) HDF5 products into corresponding instrument-specific and mission-compliant HDF5 SDR and Geolocation swath products.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP Alpha Version 2.0b or later required).

Enhancements to this C-SDR SPA v1.4 include:

• update to Operational Software v1.5.06.05 for VIIRS SDR, CrIS SDR and ATMS SDR;
• improved cross-granule processing for VIIRS.

Note: Users are encouraged to update to this latest version.

The C-SDR_SPA v1.4 package represents the Direct Readout implementations from the latest operational VIIRS, CrIS and ATMS SDR algorithm baseline (Mx6.5 is now in the global operational system) to produce swath products (see note below) and no VIIRS cross-granule dependency (more data per DR acquisition for VIIRS).

Note:  This C-SDR is created using the Algorithm Development Library (ADL), which has been configured by the S-NPP/JPSS algorithm team for added flexibility yielding added features unique for direct readout applications.  The C-SDR receives as input mission-compliant RDRs produced by the RT-STPS v5.3 or later.  The C-SDR accepts RDRs produced by a known modified RT-STPS version.  The C-SDR accepts RDRs produced by the NOAA CLASS. The C-SDR produces output either in swath (variable length granule) or fixed granule output.

Click here to access C-SDR_SPA v1.4

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved Contact DRL system.

We encourage users to utilize the MyDRL forums.

See the output from latest land and atmosphere algorithms that presently exist in IPOPP at the DRL Recent Data Products Gallery.

H2G_SPA v2.2 Released - 12/20/2012

On behalf of the JPSS and S-NPP Missions as well as the NASA Direct Readout Program, the DRL is pleased to announce the release of the H2G_SPA (Version 2.2).

The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications and creates geolocated GeoTIFF images, jpeg browse images, and png browse images for various parameter datasets in VIIRS SDR/EDR output and MODIS Level-1/Level-2 output.  The H2G_SPA also creates true color images and user-defined false color images from supported VIIRS and MODIS science products.  The H2G_SPA functions in two modes:  Standalone, or as an International Polar Orbiter Processing Package (IPOPP) plug-in (IPOPP Version 2.0b required).

Enhancements to H₂G Version 2.2 include:

• improved VIIRS image quality via capability to handle multiple fill and quality flag values (e.g., as produced by the C-SDR and CSPP packages as well as corresponding files produced by CLASS);
• improved geolocation in VIIRS imagery via use of terrain-corrected VIIRS Geolocation (GMTCO).

Note: Special thanks to the IPOPP Alpha User constituency and mission colleagues (from NOAA, DoD and NASA).

The geolocated GeoTIFF images created by H2G are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The jpeg and png browse images are enhanced with vector overlays of land/sea and political boundaries.

The H2G_SPA incorporates features to enhance output images and facilitate scientific interpretation:

• while creating images from a primary dataset, a secondary dataset may be used to mask appropriate areas;
• user-defined color map and user-defined scaling capabilities for conversion of dataset values into imagery pixels;
• choice of either geographic or stereographic projection for the output image;
• optional subsetting of swaths into user-defined regions of interest, for either geographic or stereographic projections;
• optional mosaicing of multiple swaths;
• jpeg and png browse images with legends (for example, fire pixel overlays on TrueColor image).

The H2G_SPA currently allows the user to select geographic and stereographic projections.  Inclusion of other projections is under consideration for future releases of H2G_SPA.

Click here to access H2G_SPA Version 2.2.

Let us know if you have any questions, which may be raised directly or to the Direct Readout user forums via the improved "Contact DRL" system.

IPOPP v2.0b Released - 12/10/2012

On behalf of the JPSS and S-NPP Missions as well as the NASA Direct Readout Program, the DRL is pleased to announce the beta release of the International Polar Orbiter Processing Package (IPOPP) Version 2.0b.  Version 2.0b marks the first IPOPP public release with the capability to create S-NPP VIIRS, CrIS and ATMS output while retaining the capability to create Terra/Aqua MODIS output.  

IPOPP v2.0b ingests S-NPP Raw Data Record (RDR) files and produces Sensor Data Records (SDRs) and Environmental Data Records (EDRs).  IPOPP v2.0b continues to ingest MODIS Level-0 Production Data Set (PDS), and produces MODIS Level-1 and Level-2 Products.

Special thanks to the IPOPP Alpha Program constituents and mission colleagues (from NOAA, DoD and NASA) for their technical contributions and applications perspective for this public release.

This processing package approach contains both the data processing framework and the Science Processing Algorithms (SPAs) to form a generalized autonomous data processing basis that may be uniquely value-added by our commercial colleagues.  

At this early phase, it is important to realize that the algorithms continue to evolve under the guidance of the science team.  Therefore, community feedback is welcome for end-user application awareness.

IPOPP v2.0b presently includes the following Suomi NPP VIIRS SPAs:

• C-SDR, to produce S-NPP VIIRS, CrIS and ATMS Raw Data RDR HDF5 products into corresponding instrument-specific and mission-compliant HDF5 SDR and Geolocation swath products
• True Color (TrueColorGen), to  produce M band corrected reflectance that are used to generate VIIRS True Color images
• ActiveFires, to produce the VIIRS Active Fires/Fire Mask product
• Cloud Mask, to produce the VIIRS Cloud Mask product
• Aerosol, to produce the VIIRS Aerosol Optical Thickness (AOT) product, Aerosol EDR, Suspended Matter EDR, Aerosol Model Information product and the Aerosol Geolocation EDR
• Surface Reflectance (SurfReflect), to produce the VIIRS Surface Reflectance product
• Vegetation Index (VegIndex), to produce the VIIRS Vegetation Index EDR
• Cloud Optical Properties (COP), to produce the VIIRS Cloud Optical Properties product and the VIIRS Ice & Night Water Cloud Top Temperature product
• Snow Cover (SnowCov), to produce the VIIRS Snow Cover Binary Map and VIIRS Snow Cover Fraction EDRs
• Surface Type (SurfType), to produce the VIIRS Surface Type EDR
• Land Surface Temperature (LST), to produce the VIIRS Land Surface Temperature EDR
• HDF to GeoTIFF (H2G), to create GeoTIFFs from HDF4 and HDF5 products

Click here to access IPOPP Version 2.0b.

Click here to observe representative output from IPOPP 2.0b, acquired for each overpass at the DRL.

IPOPP v2.0b also includes the latest versions of these MODIS SPAs now available on the DRL Web Portal (special thanks to OBPG, CIMSS, and the MODIS Land Team for their science-sanctioned algorithm contributions):

• MODISL1DB, to create MODIS Geolocated/Calibrated products
• CREFL, to create the MODIS Corrected Reflectance product
• GBAD, to create ephemeris and attitude files (input for Aqua L1)
• IMAPP, to create the MODIS Level 2 Cloudmask, Cloudtop Properties, Cloud Phase, Atmospheric Profiles, and Aerosol products
• L2GEN, to create the MODIS Level 2 Ocean Color (including Chlor-a) and Sea Surface Temperature (SST) products
• MOD14, to create the MODIS Level 2 Fire Mask product
• MODLST, to create the MODIS Level 2 Land Surface Temperature (LST) product
• NDVIEVI, to create the MODIS Level 2 Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) products
• H2G, to create GeoTIFFs from HDF products

Let us know if you have any questions, which may be directed to our "Contact DRL" system.

H2G SPA v2.1 Released - 11/14/2012

On behalf of the JPSS Mission and the NASA Direct Readout Program, the DRL is pleased to announce the release of the H2G_SPA (Version 2.1).

The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications and creates geolocated GeoTIFF images, jpeg browse images, and png browse images for various parameter datasets in VIIRS SPA products and Level 2 MODIS SPA products.  The H2G_SPA also creates standard true color images and user-defined false color images from supported VIIRS and MODIS science products.  The H2G_SPA functions in two modes:  Standalone, or as an International Polar Orbiter Processing Package (IPOPP) plug-in (IPOPP Version 2.0a required).

Enhancements to H₂G Version 2.1 include:

• stereographic projection capability has been extended for VIIRS products;
• subsetting of swaths has been extended to stereographically projected image products;
• capability to ingest similar products from multiple swaths in order to produce mosaiced image products;
• SPA interface has been generalized for multi-mission support.

The geolocated GeoTIFF images are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The non-geolocated jpeg and png images are more suitable as browse images.  These browse images are enhanced with vector overlays of land/sea and political boundaries.

The H2G_SPA incorporates features to enhance output images and facilitate scientific interpretation:

• while creating images from a primary dataset, a secondary dataset may be used to mask appropriate areas;
• user-defined color map and user-defined scaling capabilities for conversion of dataset values into imagery pixels;
• choice of either geographic or stereographic projection for the output image;
• optional subsetting of swaths into user-defined regions of interest, for either geographic or stereographic projections;
• optional mosaicing of multiple swaths;
• jpeg and png browse images with legends (for example, fire pixel overlays on TrueColor image).

H₂G currently allows the user to select geographic and stereographic projections.  Inclusion of other projections is under consideration for future releases of H₂G_SPA.

Click here to access H2G_ SPA v2.1a.

Let us know if you have any questions, which may be directed to our "Contact DRL" system.

MODISL1DB SPA v1.8 Released - 10/12/2012

On behalf of the NASA Direct Readout Program, the DRL is pleased to announce the release the MODISL1DB_SPA (Version 1.8).  The MODIS Level 1 Direct Broadcast Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01) and Geolocation (MOD03/MYD03) products.  It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules.  The MODISL1DB_SPA functions in two modes:  Standalone, or as an International Polar Orbiter Processing Package (IPOPP) plug-in.

Enhancements to MODISL1DB_SPA v 1.8 include an update to MODIS Terra and Aqua L1B processing.  The MODIS Calibration Support Team (MCST) modified the Look-Up Table (LUT) format and made corresponding code modifications to the MODISL1DB core algorithm.

Click here to access MODISL1DB_ SPA v1.8.

Let us know if you have any questions, which may be directed to our "Contact DRL" system.

C-SDR SPA v1.2 Released - 8/9/2012

On behalf of the JPSS Program and the NASA Direct Readout Program, the DRL is pleased to announce the release of C-SDR SPA v1.2.  The Common Sensor Data Record Science Processing Algorithm (C-SDR_SPA) can process Suomi NPP VIIRS, ATMS and CrIS Raw Data Record (RDR) HDF5 products into corresponding instrument-specific and mission-compliant HDF5 SDR and Geolocation swath products.  The SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP Alpha Version 2.0a or later required).

Note: the algorithms contained in C-SDR_SPA v1.2 are beta versions as defined by the science team. 

The C-SDR_SPA v1.2 package represents the Direct Readout implementations from the latest official operational VIIRS, CrIS and ATMS SDR algorithm baseline (Mx6.2) to produce swath products and no cross-granule dependency (more data per DR acquisition for VIIRS).

Click here to access C-SDR SPA v1.2.

Let us know if you have any questions, which may be directed to our "Contact DRL" system.

TrueColorGen SPA Version 1.0a Released – 7/19/2012

On behalf of the JPSS and NASA Direct Readout Programs, the DRL is pleased to announce the release of the TrueColorGen_SPA (Alpha Version 1.0a).

The TrueColorGen Science Processing Algorithm (TrueColorGen_SPA) produces atmospherically corrected reflectances for Suomi NPP VIIRS Moderate Resolution bands M3, M4, and M5 for variable length granules (swath).  The DRL's H2G_SPA package (Alpha Version 2.0a) can then be used to process the Corrected Reflectance products produced by the TrueColorGen_SPA and create VIIRS true color imagery.  The TrueColorGen_SPA functions in two modes:  Standalone, or as an IPOPP plug-in (Alpha Program Participants).

TrueColorGen_SPA is an engineering version of the Corrected Reflectance algorithm.  The DRL is working with the Land Science Team to make a science-sanctioned version of the VIIRS Corrected Reflectance algorithm available in the future.

Credits:
The TrueColorGen_SPA was developed by the DRL at NASA/GSFC.  The S-NPP SDS Land Project Evaluation and Test Element (LPEATE) contributed to the implementation approach.

For your convenience, the TrueColorGen_SPA Version 1.0a User’s Guide is attached.  Also publicly available at this time for S-NPP processing are:

• RT-STPS  Version 5.3, ingest software to enable High Rate Data (HRD) acquisition and create instrument-specific Raw Data Records (RDRs) for VIIRS, CrIS and ATMS;
• VIIRS-SDR SPA Version 1.5.05.03, to create mission-compliant HDF5 Sensor Data Record (SDR) and Geolocation swath products;
• H2G SPA Version 2.0a to create Top Of Atmosphere True Color, Corrected Reflectance True Color, Infrared (M12), and DNB (day night band) images.
   

Click here to access the TrueColorGen_SPA Version 1.0a.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

Simulcast Version 5.1 Released – 5/11/2012

On behalf of the JPSS Mission and the NASA Direct Readout Program, the DRL is pleased to announce the release of Simulcast Version 5.1. Simulcast is a multi-mission tool that enables a user to select and view quicklook instrument data (Suomi NPP VIIRS as well as Aqua/Terra MODIS) in real time with a single Viewer. Simulcast Services processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).  Simulcast functions in two modes:  Standalone, or as an IPOPP plug-in.  Enhancements to Simulcast Version 5.1 include:

                 1. improved night image quality;

                 2. optimized memory management in Simulcast Viewer;

                 3. enhanced API for value-adding by end user.

This release includes the Simulcast Services for both Linux and Windows users, as well as the Simulcast Viewer for Windows, published as a self-installing package.

Special thanks are extended to our commercial contributors for their shared perspective in enhancing the API for value-added applications!

Click here to access the Simulcast Services v5.1 and the Simulcast Viewer-only (Windows) v5.1 packages at:

Let us know if you have any questions, which may be directed to our "Contact Us" system.

H2G_SPA Version 2.0a Released – 6/4/2012

On behalf of the JPSS Mission and the NASA Direct Readout Program, the Direct Readout Laboratory (DRL) is pleased to announce the release of the H2G_SPA (Alpha Version 2.0a).

The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout applications and creates geolocated GeoTIFF images, jpeg browse images, and png browse images for various parameter datasets in VIIRS SPA products and Level 2 MODIS SPA products.  The H2G_SPA also creates standard true color images and user-defined false color images from supported VIIRS and MODIS science products.  The H2G_SPA functions in two modes:  Standalone, or as an International Polar Orbiter Processing Package (IPOPP) plug-in (IPOPP Version 2.0a required).

The H2G_SPA Version 2.0a has been enhanced with the capability to produce images from HDF5 VIIRS Science data products. 

The geolocated GeoTIFF images are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The non-geolocated jpeg and png images are more suitable as browse images.  These browse images are enhanced with vector overlays of land/sea and political boundaries.

The H2G_SPA incorporates features to enhance output images and facilitate scientific interpretation:

• while creating images from a primary dataset, a secondary dataset may be used to mask appropriate areas;
• user-defined color map and user-defined scaling capabilities for conversion of dataset values into imagery pixels;
• choice of either geographic or stereographic projection for the output image;
• optional subsetting of swaths into user-defined regions of interest (currently available for geographically-projected images only);
• jpeg and png browse images can have legends and/or overlays.

The H2G_SPA allows the user to select geographic or stereographic projections.  Inclusion of other projections and image mosaic capabilities is under consideration for future releases of the H2G_SPA.

Click here to access the H2G_SPA Version 2.0a.

Also available (to preprocess for H2G outside of IPOPP) for download at this location are:

• RT-STPS v5.2, ingest software to enable High Rate Data (HRD) acquisition and create instrument-specific Raw Data Records (RDRs) for VIIRS, CrIS and ATMS, and
• VIIRS-SDR SPA v1.5.05.03, to create mission-compliant HDF5 Sensor Data Record (SDR) and Geolocation swath products.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

RT-STPS Version 5.3 Released – 6/8/2012

On behalf of the JPSS Program and the NASA Direct Readout Program, the DRL is pleased to announce the release of RT-STPS v5.3.  The Real-time Software Telemetry Processing System (RT-STPS) is a Java application that ingests raw telemetry data and produces products, including sorted CCSDS packets and Virtual Channel Data Units (VCDUs).  RT-STPS enables High Rate Data (HRD) acquisition and creates instrument-specific Raw Data Records (RDRs) for the Suomi NPP VIIRS, CrIS and ATMS instruments.  RT-STPS functions in two modes:  Standalone, or as an IPOPP plug-in (Linux only).

Enhancements to Version 5.3 include improved RDR interoperability between direct readout and global data processing system environments.

Click here to access RT-STPS v5.3.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

VIIRS-SDR SPA Version 1.5.05.03 Released - 6/5/2012

On behalf of the JPSS Program and the NASA Direct Readout Program, the DRL is pleased to announce the release of VIIRS-SDR SPA v1.5.05.03.  The VIIRS-SDR Science Processing Algorithm (SPA) takes an input RDR HDF5 file (containing a VIIRS Science RDR and Spacecraft Diary RDR) and produces mission-compliant HDF5 SDR and Geolocation swath products.  The Imagery Resolution SDRs contain the calibrated reflective and emissive data at 375m for Bands I1 through I5.  The Moderate Resolution SDR contains the calibrated reflective and emissive data at 750m for Bands M1 through M16.  The Day/Night Band (DNB) SDR contains the reflective data at 375m for the DNB Band.  The Geolocation products are available in Moderate, Imagery and DNB resolution.  The VIIRS-SDR SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.0a or later).

The VIIRS-SDR SPA has been enhanced for improved handling of ancillary inputs. In standalone mode it allows users to supply Look-up Tables (LUTs), leapsec and TLE (Two-line Element) files on the command line. In IPOPP mode the SPA includes automated retrieval of LUTs, leapsec and TLE files to ensure that optimal ancillary inputs are used during automated execution.

Note:  This enhanced version of the VIIRS-SDR SPA v1.5.05.03 was packaged with v1.2 of the wrapper software; the version of VIIRS-SDR SPA previously available on the DRL Web Portal was packaged with wrapper v1.0.  Users are encouraged to upgrade to this enhanced version. 

The VIIRS-SDR SPA is currently running within the International Polar Orbiter Processing Package (IPOPP) v2.0a data processing framework at the DRL.  This version of IPOPP is the first to include the capability to create Suomi NPP VIIRS Land and Atmosphere xDR output in the form of mission-compliant data files (products are engineering versions).  Representative output is created for each overpass and may be observed at the DRL’s Gallery.

Evolution of the algorithms continue under the guidance of the science teams.  The DRL is working with mission contributors to establish a phased and coherent approach.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

RT-STPS Version 5.2 and VIIRS-SDR SPA Version 1.5.05.03 Released – 4/23/2012

On behalf of the JPSS Mission and the NASA Direct Readout Program, the DRL is pleased to announce the release of two software packages essential to improved Suomi NPP HRD processing:

The Real-time Software Telemetry Processing System (RT-STPS) is a Java application that ingests raw telemetry data and produces products, including sorted CCSDS packets and Virtual Channel Data Units (VCDUs).  RT-STPS functions in two modes:  Standalone, or as an IPOPP plug-in (Linux only).  Enhancements to Version 5.2 include:

The VIIRS-SDR Science Processing Algorithm (SPA) takes an input RDR HDF5 file (containing a VIIRS Science RDR and Spacecraft Diary RDR) and produces mission-compliant HDF5 SDR and Geolocation swath products.  The Imagery Resolution SDRs contain the calibrated reflective and emissive data at 375m for Bands I1 through I5.  The Moderate Resolution SDR contains the calibrated reflective and emissive data at 750m for Bands M1 through M16.  The Day/Night Band (DNB) SDR contains the reflective data at 375m for the DNB Band.  The Geolocation products are available in Moderate, Imagery and DNB resolution.  The VIIRS-SDR SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.0a or later).

The VIIRS-SDR SPA is currently running within the IPOPP v2.0a data processing framework at the DRL.  This version of IPOPP is the first to include the capability to create Suomi NPP VIIRS Land and Atmosphere output in the form of mission-compliant data files (products are engineering versions).  Representative output is created for each overpass and may be observed at the DRL’s Gallery.

Evolution of the algorithms continues under the guidance of the science teams.  The DRL is working with contributors to establish a phased approach to an IPOPP v2.0 public release.

Click here to access RT-STPS v5.2 and VIIRS-SDR SPA v1.5.05.03.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

  Suomi NPP HRD Broadcast Activated - 2/24/2012

  The DRL is pleased to inform you that on February 23 at 20:10utc Suomi NPP HRD broadcast was activated.   At 20:21utc our colleagues at Oregon State University acquired a complete swath of error-free data.  The instrument Raw Data Record (RDR) files (VIIRS, CrIS and ATMS) were created on location via the Real-Time Software Telemetry Processing System (RT-STPS) v5.1a.   These RDR files were transferred to the DRL Team for higher-level processing via the International Polar Orbiter Processing Package (IPOPP).  The corresponding VIIRS True Color image is available at the DRL Gallery. The DRL is honored to be part of this major milestone, and extends both congratulations and thanks to the successes of the Suomi NPP Team!

RT-STPS Version 5.1a and Simulcast Version 5.0 Released – 2/17/2012

In the future, higher-level Suomi NPP Science Processing Algorithms executing within the IPOPP v2.0 framework will be made available at our Gallery, while retaining Terra/Aqua legacy processing capability to serve as the foundation for your multi-mission processing needs for direct readout applications. Special thanks to the Suomi NPP Team for their contributions!

For now, as we look forward to the Suomi NPP High Rate Data (HRD) instrument turn-on on February 23, the DRL is pleased to release  ingest software to enable HRD acquisition, creation of instrument-specific Raw Data Records (RDRs), and creation of VIIRS quicklook imagery.  The two packages comprising this capability are the Real-time Software Telemetry Processing System (RT-STPS) (CCSDS protocol processor) and Simulcast Services (VIIRS Quicklook visualization and distribution).

It is hoped you find these packages useful near-term, as well as a functional medium for ongoing communication.  Special thanks are extended to the Alpha Program participants for their contributions to these packages.

RT-STPS is a Java application that ingests raw telemetry data and produces products, including sorted CCSDS packets and Virtual Channel Data Units (VCDUs). RT-STPS functions in two modes: Standalone, or as an IPOPP plug-in (Linux only).  Enhancements to RT-STPS v5.1a include:

• enhanced capability to generate RDR files for VIIRS, ATMS and CrIS;
• improved documentation;
• streamlined installation procedure for Windows user.

Simulcast is a multi-mission tool that enables a user to select and view quicklook instrument data in real time with a single Viewer. The Simulcast Services processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).  Simulcast functions in two modes:  Standalone, or as an IPOPP plug-in. Simulcast Version 5.0 has been enhanced with the capability to process VIIRS data. This release includes Simulcast Services for both Linux and Windows users, as well as the Simulcast Viewer for Windows, published as a self-installing package.  The VIIRS imagery presentation is to be found more spectacular than it has been for MODIS, but this does come at the expense of computational resources.

RT-STPS v5.1, Simulcast Services v5.0 and the Simulcast v5.0 Viewer-only (Windows) packages are available for download.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

IPOPP Version 1.7b Released – 12/7/2011

The DRL is pleased to announce the release of the International Polar Orbiter Processing Package (IPOPP) Version 1.7b.  IPOPP is a multi-discipline, multi-mission processing package for Direct Readout applications that leverages science discipline (land, ocean, atmosphere) processing packages and algorithms (e.g., MODIS Land, SeaDAS, and IMAPP).  IPOPP ingests MODIS Level-0 PDS file pairs and creates Level-2 products.  DRL technologies developed for the NPP In-Situ Ground System (NISGS) are the modular basis, and integrated to comprise the IPOPP.

IPOPP v1.7b has been enhanced so that it may be installed in either Real-time Processing Mode or Archive Reprocessing Mode. In Archive Reprocessing Mode, IPOPP will process previously acquired PDS file pairs as input. Ancillary files spanning the period of interest are copied from the Compressed Ancillary Archive on the DRL Information Services Repository.  Additional enhancements to IPOPP v1.7b include:

This all-inclusive release contains both the processing framework and the Science Processing Algorithms (SPAs) to create near real-time data products.  IPOPP v1.7b includes the following SPAs (thanks to OBPG, CIMSS, and the MODIS Land Team for their science-sanctioned algorithm contributions):

As new and updated SPAs are released by the DRL, users can easily plug them into their operational IPOPP (or run them in standalone mode, outside of the framework, if desired).  Users are encouraged to check the DRL download site for SPA currency.

Special thanks are extended to the Alpha Program participants and discipline-based steering committees for their contributions to IPOPP v1.7b!

The DRL is evolving the IPOPP v2.0 for NPP HRD in coordination with mission stakeholders and colleagues as well as Alpha Program participants.

Click here to download the IPOPP v1.7b.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

GBAD Version 2.7 Released– 10/28/2011

The DRL is pleased to announce the release of the GBAD _SPA (Version 2.7).  The Ground Based Attitude Determination (GBAD) Ephemeris and Attitude Data Converter Science Processing Algorithm (SPA) creates ephemeris and attitude files from the Aqua spacecraft direct broadcast downlink. GBAD_SPA is the preprocess for the MODIS L1 Algorithm (MODISL1DB). The GBAD_SPA functions in two modes: Standalone, or as an IPOPP plug-in.

GBAD_SPA v2.7 has been enhanced to eliminate dependency upon a Two-Line Element (TLE) file.  Specification of a TLE file is now optional.  Should you wish to use a TLE file, you are strongly encouraged to use the DRL TLE files (provided by the NASA FDF) available from the DRL ftp site.

Click here to download GBAD v2.7.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

NASA Readies New Type of Earth-Observing Satellite for Launch

NASA is planning an Oct. 27 launch of the first Earth-observing satellite to measure both global climate changes and key weather variables. The National Polar-orbiting Operational Environmental Satellite System Preparatory Project (NPP) is the first mission designed to collect critical data to improve weather forecasts in the short-term and increase our understanding of long-term climate change. NPP continues observations of Earth from space that NASA has pioneered for more than 40 years.

Dynamic Direct Readout Site Map - 10/6/2011

The DRL is pleased to announce that a new, dynamic Direct Readout site map is available at the DRL Web Portal.

On behalf of NASA’s Direct Readout Program, we would like to thank those of you who responded to the Direct Readout Site Survey that was distributed in August. The DRL strives to keep the DR site map as complete and current as possible, and with your assistance more than 30 new sites were revealed.  If you are affiliated with a DR site that does not currently appear on the site map, please take a moment to complete the survey.

If your site was already listed with the DRL prior to August 2011, additional information is being requested to assure database currency and consistency.   Thank you in advance for your assistance.

The new site map includes a mouse-over feature that lets you see the location of each site (latitude/longitude, city, and country).  Click here for a detailed list of the sites depicted on the map, including points of contact and associated URLs.

Let us know if you have any questions, which may be directed to the "Contact Us" system.

Phase 3 of NPP/VIIRS Algorithm Implementation - 9/30/2011

The DRL now presents Phase 3 of the NPP/VIIRS algorithm implementation. The primary focus of Phase 3 is a maintenance model for creating an efficient approach for algorithm updates. This implementation already includes swath processing and a simplified ancillary data approach. Click here for the "Phase 3 Direct Readout Implementation of the VIIRS Chained-processing Approach" diagram and additional information.

By making use of live MODIS data from the Terra and Aqua satellites it is possible for the DRL to generate the Environmental Data Record (EDR) products within IPOPP for each pass observed by the DRL. This is useful for algorithm evaluation prior to having NPP on-orbit. Much work has been done but there is much more to do to adequately prepare end-users for this latest Earth observing platform. Click here to view the imagery output.

RT-STPS Version 5.0 Released – 8/24/2011

The DRL is pleased to announce a new release of RT-STPS (Version 5.0). The Real-time Software Telemetry Processing System (RT-STPS) is a Java application that ingests raw telemetry data and produces Level 0 output, including sorted Consultative Committee for Space Data Systems (CCSDS) packets and Virtual Channel Data Units (VCDUs). RT-STPS may function in two modes: Standalone, or as an IPOPP plug-in.

This interim release on the road to NPP launch includes Channel Access Data Unit (CADU) test data files (representative receiver output) that can be processed with RT-STPS v5.0 to produce Level-0 output in the form of NPP Raw Data Records (RDRs) in compliance with the mission-specified format.

Enhancements to v5.0 include:

Click here to download RT-STPS v5.0.

I know that we are all very excited to engage the challenges for NPP Direct Readout.  And to enhance our ability to take on these challenges, we welcome back Dr. James Dodge to the DRL Team!

Let us know if you have any questions, which may be directed to our "Contact Us" system.

Simulcast Version 4.3 Released – 8/2/2011

The DRL is pleased to announce a new release of Simulcast (Version 4.3). Simulcast is a multi-mission tool that enables a user to select and view quicklook instrument data in real time with a single Viewer. The Simulcast Services processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).  Simulcast functions in two modes:  Standalone, or as an IPOPP plug-in.

This release includes Simulcast Services for both Linux and Windows users, as well as the Simulcast Viewer for Windows, published as a self-installing package.  What is new in Simulcast v4.3:

We strongly encourage Simulcast users to upgrade to v4.3.  At present Simulcast instrument viewing capability is for MODIS (Terra and Aqua).  We are pleased to report that with the upcoming v5.0 release, the Simulcast capability will be extended to support quicklook NPP VIIRS imagery.

Click here for more details on the Simulcast architecture.

Click here to download Simulcast v4.3.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

NPP Raw High Rate Data Available for Testing - 6/15/2011

NPOESS Preparatory Project (NPP) raw High Rate Data (HRD) are now available for testing. Click here to access the test data. The nct31_hrd_c40.raw file data file is accompanied by a readme file containing expected packet counts and other information to assist users with understanding the data specifications and format. The nct31_hrd_c40.raw file is not PN-encoded and contains ATMS, CrIS, VIIRS, and HK/ENG data. Click here for more information on DRL NPP Compatibility Test 3 (NCT3) Part 1 evaluation of NISGS technologies (now integrated into IPOPP).

NPP/HRD Report and Test Data– 6/15/2011

The DRL is pleased to inform you of relevant progress on the road to NPP Launch. These ongoing announcements serve as the vehicle for Direct Readout community awareness and preparedness to process downlink data from this new platform. Many of you may be aware that the team is prototyping preprocessing technologies and higher level processing algorithms, and that the IPOPP framework is the resource infrastructure for the NPP/HRD algorithm execution.

Test data now available: Sample tested HRD, test reports, and statistical analysis were provided to the DRL by the NASA NPP System Integration and Test (SI&T) Team as part of the NPP Compatibility Test (NCT) 3, Part I. The DRL applied this material against its own software development requirements to ensure that NPP In-Situ Ground System (NISGS) technologies will enable the NPP/HRD direct readout community to eventually create their own NPP data products. Click here to access the test data. Here you will find the nct31_hrd_c40.raw file. This file contains ATMS, CrIS, and VIIRS data. The data file is accompanied by a readme file containing expected instrument packet counts and other information to assist users with understanding the data specifications and format. Click here for more information on DRL NCT3 evaluation of NISGS technologies (now integrated into IPOPP), including the DRL configuration.

The DRL continues to evolve NPP prototype products and make them accessible via the DRL Web Portal gallery. To create these products, the DRL has implemented VIIRS algorithms for Direct Readout use (swath processing, NRT ancillary model, maintenance model). Prior to the availability of on-orbit NPP/VIIRS data, MODIS data from the Terra and Aqua satellites are used to proxy VIIRS Sensor Data Record (SDR) output in order to generate the Environmental Data Record (EDR) output for each pass observed by the DRL.

Special thanks to our NPP and JPSS Mission colleagues and Alpha Program participants!

Let us know if you have any questions, which may be directed to our "Contact Us" system.

L2GEN Version 6.4.2 Released – 5/12/2011

The DRL is pleased to announce the release of the L2GEN_SPA (Version 6.4.2).  The science algorithms within L2GEN are implemented from the SeaDAS package (Version 6.2) provided by NASA's Ocean Biology Processing Group (OBPG).

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature (SST) products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files. The L2GEN_SPA functions in two modes: Standalone, or as an IPOPP plug-in.

Enhancements to Version 6.4.2 include the final MODIS Terra processing code and binaries to match the MODIS Terra Ocean Color Reprocessing of November 2010.

Click here to download L2GEN_SPA Version 6.4.2.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

CREFL Version 1.7.1 Released – 12/9/2010

The DRL is pleased to announce the release of the MODIS Corrected Reflectance (CREFL) Science Processing Algorithm (SPA) (Version 1.7.1).  The Corrected Reflectance algorithm (Version 1.7.1) was developed by the DRL at NASA/GSFC.  This version of the algorithm also incorporates contributions from our colleagues at the University of South Florida’s Institute for Marine Remote Sensing.

The MODIS Corrected Reflectance Science Processing Algorithm (SPA) processes MODIS Aqua and Terra Level 1B DB data to create the MODIS Level 2 Corrected Reflectance product.  The algorithm performs a simple atmospheric correction with MODIS visible, near-infrared, and short-wave infrared bands (bands 1 through 16).  The algorithm allows users to specify the bands to be used in the making of the output product, using a comma-separated list of bands 1-16.  It corrects for molecular (Rayleigh) scattering and gaseous absorption (water vapor and ozone) using climatological values for gas contents.  It requires no real-time input of ancillary data.  The algorithm performs no aerosol correction.  The Corrected Reflectance products created by CREFL_SPA are very similar to the MODIS Land Surface Reflectance product (MOD09) in clear atmospheric conditions, since the algorithms used to derive both are based on the 6S Radiative Transfer Model.  The products show differences in the presence of aerosols, however, because the MODIS Land Surface Reflectance product uses a more complex atmospheric correction algorithm that includes a correction for aerosols.  The CREFL_SPA functions in two modes:  Standalone, or as an IPOPP plug-in.

Enhancements to CREFL_SPA Version 1.7.1 include the addition of:

1. Command line parameters that allow users to specify:

• the bands to be used in the making of the output product, using a comma-separated list of bands 1-16;
• the reflectance range;
• the maximum solar zenith angle.

2. Command line parameters that allow users to enable the following features:

• Append output;
• Top of Atmosphere;
• Sea Level;
• Nearest neighbor interpolation feature;
• Overwrite output file;
• Verbose output;
• Gzip internal compression.

3. Meaningful HDF dimension names to HDF output files.
4. Global metadata to the output file.
5. Range checking to various user-specified parameters.

You may access CREFL_SPA Version 1.7.1 via the DRL Web Portal Downloads page, recently updated to tell you at glance about the technologies and services that the DRL provides to the global Direct Readout user community.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

IMAPP Version 2.1 Released – 8/10/2010

The Direct Readout Laboratory (DRL) is pleased to announce the release of the MODIS IMAPP_SPA Version 2.1. The International MODIS/AIRS Processing Package (IMAPP) Direct Broadcast algorithms were provided to the DRL by the Space Science and Engineering Center (SSEC), University of Wisconsin-Madison.

This implementation of IMAPP is a source of four science-sanctioned MODIS Level 2 atmospheric products: Cloudmask (MOD35); Cloudtop Properties, Cloud Phase and Cloud Optical properties (MOD06); Atmospheric Profiles (MOD07); and Aerosol (MOD04).  The IMAPP_SPA functions in two modes: Standalone, or as an IPOPP plug-in.

Enhancements to Version 2.1 include:

• The Cloud Optical Properties software module is now included.  This software module will create 19 optical property arrays at 1km resolution, including Cloud_Optical_Thickness and Cloud_Effective_Radius, and place them into the MOD06 output product.
• The Cloud Top Properties software module has been updated to Collection 5 MODAPS Version 5.3.1.  It now requires an 8-day Clear Sky Radiance Bias (CSRB) ancillary file for creation of the MOD06 product.
• The Atmospheric Profiles algorithm now creates a Retrieved_Ozone_Profile dataset in the MOD07 product.  It also retrieves Moisture Profile in units of mixing ratio (g/kg) instead of Dewpoint (degrees C).  Corresponding coefficient, bias and detector static ancillary files have been updated.
• The grib2 meteorological ancillary-ingest capability has been extended (the grib2 ancillary-ingest capability is limited to 64-bit Linux platforms and is presently available in Standalone Mode only).
• Ancillary logic for optimal selection of ancillary files during real-time processing and reprocessing in IPOPP Mode has been improved.

You may access IMAPP_SPA v2.1 via the DRL Web Portal Downloads page, recently updated to tell you at glance about the technologies and services that the DRL provides to the global Direct Readout user community.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

IPOPP Version 1.7a Released to Alpha Users – 7/12/2010

The DRL is pleased to announce that the International Polar Orbiter Processing Package (IPOPP) Alpha Version 1.7a is now available to participants in the DRL Alpha Test Program.

IPOPP 1.7a is the first IPOPP release that may be installed in either Real-time Processing Mode or Archive Reprocessing Mode. In Archive Reprocessing Mode, IPOPP will process previously acquired Production Data Set (PDS) (packet file and construction record) file pairs. Ancillary files spanning the period of interest are copied from the Compressed Ancillary Archive on the remote DRL Information Services Repository.

Additional enhancements to IPOPP 1.7a include:

• improved installer to make it more robust and informative;
• streamlined procedures for starting, stopping and maintaining the system;
• improvements to tools/services.sh to provide more accurate output;
• improved Data Storage Manager (DSM) protocol to handle high system loads.

IPOPP 1.7a represents another significant milestone on the road to NPP, NPOESS/JPSS, and beyond. The DRL is grateful to the Alpha user community for critical insights provided throughout the IPOPP development process. We look forward to continuing this valued relationship as we further refine IPOPP to best serve the global Direct Readout community.

Click here to download the IPOPP v1.7a.

H2G_SPA Version 1.6a Released – 4/23/2010

The DRL is pleased to announce the release of the H2G_SPA (Alpha Version 1.6a).

The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for Direct Readout Applications and can create geolocated GeoTIFF images, jpeg browse images, and png browse images for various parameter datasets in Level 2 MODIS SPA products. The H2G_SPA also creates standard true color images and user-defined false color images from Level 2 Corrected Reflectance Products.  The H2G_SPA functions in two modes: Standalone, or as an International Polar Orbiter Processing Package (IPOPP) plug-in.

Enhancements to Version 1.6a include:

The geolocated GeoTIFF images are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The non-geolocated jpeg and png images are more suitable as browse images. These browse images are enhanced with vector overlays of land/sea and political boundaries.

H2G incorporates features to enhance output images and facilitate scientific interpretation:

Note: For users of both L2GEN_SPA and H2G_SPA, you are advised to update the H2G at your earliest convenience.  The OBPG had changed their standard output format pertaining to the no data value, which may affect the output of older versions of H2G.  The H2G_SPA v1.6a remains back compatible with prior versions of L2GEN.

H2G_SPA currently allows the user to select geographic or stereographic projections. Inclusion of other projections and image mosaic capabilities is under consideration for future releases of H2G_SPA.

Click here to download H2G_SPA Version 1.6a.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

L2GEN_SPA Version 6.2.5 Released – 4/21/2010

The DRL is pleased to announce the release of the L2GEN_SPA (Version 6.2.5). The science algorithms within L2GEN are implemented from the SeaDAS package (Version 6.1) provided by NASA’s Ocean Biology Processing Group (OBPG).

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature (SST) products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files. The L2GEN_SPA functions in two modes: Standalone, or as an IPOPP plug-in.

Enhancements to Version 6.2.5 include the utilization of a new daily National Snow and Ice Data Center (NSIDC) Sea Ice coverage ancillary file for both Standalone Mode and IPOPP Mode.

Click here to download L2GEN_SPA Version 6.2.5.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

MODISL1DB_SPA Version 1.6 Released – 4/13/2010

The DRL is pleased to announce the release of the MODISL1DB_SPA (Version 1.6).  The MODIS Level 1 Direct Broadcast Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01) and Geolocation (MOD03/MYD03) products.  It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km
(MOD02QKM/MYD02QKM) granules.  The MODISL1DB_SPA functions in two modes: Standalone, or as an International Polar Orbiter Processing Package (IPOPP) plug-in.

Version 1.6 of the MODISL1DB_SPA distribution has been updated to include Collection 6 l1bgen_modisa and l1bgen_modist programs.

Click here to download MODISL1DB_SPA Version 1.6.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

CRECBuilder Version 1.2 Released – 3/26/2010

The DRL is pleased to announce the release of CRECBuilder Version 1.2.

The Construction Record Builder (CRECBuilder) Java application reads MODIS packet files and recreates the corresponding Construction Record (CSR) metadata files to comply with the mission-specified data format--the PDS. The CRECBuilder program is particularly useful where packet files archived without CSRs need to be processed. The PDS Level-0 format has functioned as the data sharing bridge between the EOS global data processing system and the EOS Direct Readout users.

The DRL appreciates all of the feedback from our colleagues, which has evolved this utility!

Enhancements to CRECBuilder Version 1.2:

• added checks to ensure that command-line arguments are valid;
• added checks to ensure validity of packet header fields.

Perceived benefits for existing International Polar Orbiter Processing Package (IPOPP) Users (Alpha and Public Users):

• enables insertion of Level-0 data from any real-time front end system into the IPOPP data system;
• enables a user to insert their "archived" Level-0 data into the IPOPP data system for reprocessing (Alpha Users only).

Click here to download CRECBuilder Version 1.2.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

Simulcast Version 4.2 Released – 11/30/2009

The DRL is pleased to announce a new release of Simulcast (Version 4.2). Simulcast is a multi-mission tool that enables a user to select and view quicklook instrument data in real time with a single Viewer. The Simulcast Services processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).

This release includes Simulcast Services for both Linux and Windows users, as well as the Simulcast Viewer for Windows, published as a self-installing package.

What is new in Simulcast v4.2:

• enhanced installer to automatically configure Simulcast for either Standalone or IPOPP mode;
• enhanced documentation detailing the Downstream Server and Multiple Downstream Server configurations;
• enhanced error detection and correction;
• enhanced logging capability.

The present Simulcast instrument viewing capability is for Terra and Aqua MODIS, and for the future Simulcast is being extended for NPP.

As an element of the IPOPP framework (a leveraged NISGS technology), Simulcast provides the real-time quicklook visualization capability.

Click here for more details on the Simulcast architecture.

Click here to download Simulcast Version 4.2.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

IPOPP Version 1.6b Released – 11/20/2009

The DRL is especially pleased to announce the release of the International Polar Orbiter Processing Package (IPOPP), Version 1.6b.  IPOPP is a multi-discipline, multi-mission processing package for Direct Readout applications that leverages science discipline (land, ocean, atmosphere) processing packages and algorithms (e.g., MODIS Land, SeaDAS, IMAPP).  DRL technologies developed for the NPP In-Situ Ground System (NISGS) are the modular basis, and integrated to comprise the IPOPP.

IPOPP 1.6b marks the initial public release of this package and represents a major milestone on the road to NPP and beyond.   This all-inclusive release contains both the processing framework and the Science Processing Algorithms (SPAs) to create near real-time data products.  IPOPP 1.6b includes the following SPAs (thanks to OBPG, CIMSS, and the MODIS Land Team for their science-sanctioned algorithm contributions):

• CREFL v1.4.2, to create the MODIS Level 2 Corrected Reflectance product
• GBAD v2.6, to create ephemeris and attitude files (input for Aqua L1)
• H2G v1.6a, to create GeoTIFFs from HDF products
• IMAPP v2.0, to create the MODIS Level 2 Cloudmask, Cloudtop Properties, Cloud Phase, Atmospheric Profiles, and Aerosol products (v2.1 available soon)
• L2GEN v5.9.7, to create the MODIS Level 2 Ocean Color (including chlor-a) and Sea Surface Temperature (SST) products
• MOD14 v5.0.1, to create the MODIS Level 2 Fire Mask product
• MODISL1DB v1.5, to create MODIS Geolocation products
• MODLST v4.14, to create the MODIS Level 2 Land Surface Temperature (LST) product
• NDVIEVI v2.2, to create the MODIS Level 2 Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) products

As new and updated SPAs are released by the DRL, users can easily plug them into their operational IPOPP (or run them in standalone mode, outside of the framework, as in the past).

The contributions of the global Direct Readout community have proved instrumental to the DRL's successful release of IPOPP.  Special thanks go to the 25 registered Alpha Program participants for their critical insights during the development process.  We also appreciate the valued contributions and guidance from the disciplined-based steering committees via the NASA-sponsored International EOS/NPP Direct Readout forums.  Finally, we recognize that none of this would be possible without adequate sponsorship.  The organizations that have contributed to the IPOPP are the:

1. NPP Mission (NASA)
2. NASA Direct Readout Program (NASA/HQ)
3. NPOESS Mission (NOAA/IPO)

The DRL continues to evolve the package with the continued participation of its Alpha Program constituents.  Future advanced features being evaluated are:

1. reprocessing
2. multi-host (cluster mode) processing

Click here to download IPOPP v1.6b.

We welcome your feedback on this beta release.  Please direct comments to the "Contact Us" system.

Note: we have internally restructured our FAQ system to better serve you in a timely manner.

NPP SPA Prototype Update - 9/16/2009

NPOESS Preparatory Project (NPP) prototype Aerosol Particle Size, Cloud Optical Properties, Suspended Matter, Snow Cover, Surface Type, Land Albedo and Land Surface Temperature (LST) Science Processing Algorithms (SPAs) are now running in IPOPP, and prototype products are available at our gallery. To create these products, the DRL has implemented these Visible Infrared Imaging Radiometer Suite (VIIRS) algorithms in a Direct Readout environment. Prior to the availability of VIIRS data, MODIS data from the Terra and Aqua satellites are used to proxy VIIRS Sensor Data Record (SDR) output in order to generate the Environmental Data Record (EDR) Imagery for each pass observed by the DRL.

IPOPP Status Update – 8/20/2009

The DRL is pleased to inform the Direct Readout community of its IPOPP development status.

At present there are 25 registered IPOPP Alpha Program participants to bring the global community an improved multi-discipline, multi-mission processing package for Direct Readout applications, which leverages science discipline (land, ocean, atmosphere) processing packages and algorithms (e.g., MODIS Land, SeaDAS, IMAPP).  In addition, the commercial sector is engaging the IPOPP in anticipation of its future public release.  This is evidenced by the commercial sector participation in DRL’s open access technology test bed.

We appreciate the valued contributions and guidance from the disciplined-based steering committees via the NASA-sponsored International EOS/NPP Direct Readout forums.

A great deal has been accomplished thus far thanks to the IPOPP Alpha Program.  The DRL is actively working with its Alpha User constituency to publicly release the IPOPP v1.6 package to the broader user community. 
                                          

We now inform you of recent accomplishments pertaining to the implementation of NPP algorithms into the IPOPP on the road to NPP Spacecraft launch.  For the accomplishments to-date the DRL extends special thanks to Edward Masuoka and his Land Team.   Click here for more information about the present status of NPP SPA prototyping activities.  At present, prototype SPAs have been implemented and are running in the IPOPP. The input to these SPAs is based on a proxy data feed from Terra/Aqua MODIS, therefore prototype NPP Products are created for every Terra and Aqua pass received at the DRL.

It is apparent that the eventual public release of the IPOPP will be a result of Direct Readout community contribution.   It must be realized, however, this would not be possible without adequate sponsorship.  The organizations that have contributed to the IPOPP are the:

1. NPP Mission (NASA)
2. NPOESS Mission (NOAA/IPO)
3. NASA Direct Readout Program (NASA/HQ)

Thank you all for your valued contributions to this development thus far, and we’re encouraged by the growing eagerness to participate!

NPP SPA Prototype Update - 8/6/2009

NPOESS Preparatory Project (NPP) prototype Normalized Difference Vegetation Index (NDVI), Cloudmask, Aerosol and Surface Reflectance Science Processing Algorithms (SPAs) are now running in IPOPP, and prototype products are available at our gallery. To create these products, the DRL has implemented the Visible Infrared Imaging Radiometer Suite (VIIRS) algorithms comprising the NDVI processing chain in a Direct Readout environment. Prior to the availability of VIIRS data, MODIS data from the Terra and Aqua satellites are used to proxy VIIRS Sensor Data Record (SDR) output in order to generate the Environmental Data Record (EDR) Imagery for each pass observed by the DRL.

CRECBuilder Version 1.1 Released – 7/29/2009

The Direct Readout Laboratory (DRL) is pleased to announce the release of CRECBuilder Version 1.1.

The Construction Record Builder (CRECBuilder) Java application reads Production Data Set (PDS) files and recreates the corresponding Construction Record (CSR) metadata file to comply with the mission-specified data format. The CRECBuilder program is particularly useful where packet files archived without CSRs need to be reprocessed. The PDS Level-0 format has functioned as the data sharing bridge between the EOS global data processing system and the EOS Direct Readout users.

Enhancements to CRECBuilder Version 1.1:

• options have been re-organized and improved;
• time stamp processing has been improved;
• Javadoc comments have been added to the source files.

Perceived benefits for the 25 IPOPP Alpha sites:

• enables any EOS front end system to insert real-time Level-0 data into the International Polar Orbiter Processing Package (IPOPP) data system;
• enables a user to insert archived Level-0 data into the IPOPP data system.

Click here to download CRECBuilder_V1.1.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

L2GEN_SPA Version 5.9.7 Released - 6/26/2009

The DRL is pleased to announce the release of the L2GEN_SPA (Version 5.9.7).  The science algorithms within L2GEN are provided by NASA’s Ocean Biology Processing Group (OBPG).

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature (SST) products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files.

This update to L2GEN_SPA was created in order to remain synchronized with the L2GEN algorithm embedded in the OBPG's SeaDAS package. Note that for those 25 IPOPP Alpha Users, there have been improvements for the IPOPP mode. Merely perform the dynamic installation procedure in order to have the latest IPOPP packaging enhancements.

Click here to download L2GEN_SPA_V5.9.7.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

NPP Prototype GTM Imagery Product Preview - 6/8/2009

NPOESS Preparatory Project (NPP) prototype Ground Track Mercator (GTM) Imagery products are now available at our gallery. To create these products, the DRL has implemented the Visible Infrared Imaging Radiometer Suite (VIIRS) GTM Imagery algorithm in a Direct Readout environment. Prior to the availability of VIIRS data, MODIS data from the Terra and Aqua satellites are used to proxy VIIRS Sensor Data Record (SDR) output in order to generate the Environmental Data Record (EDR) Imagery for each pass observed by the DRL.

H2G_SPA Version 1.5a Released – 5/7/2009

The Direct Readout Laboratory (DRL) is pleased to announce the release of the H2G_SPA Alpha Version 1.5a.

The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is specially designed for Direct Readout and can create geolocated GeoTIFF images, jpeg browse images, and png browse images for various parameter datasets in Level 2 MODIS SPA products. H2G also creates standard true color images and user-defined false color images from Level 2 Corrected Reflectance Products.

The geolocated GeoTIFF images are Geographic Information System (GIS)-ingestible and can also be opened by standard image viewers. The non-geolocated jpeg and png images are more suitable as browse images. These browse images are enhanced with vector overlays of land/sea and political boundaries.

H2G incorporates features to enhance output images and facilitate scientific interpretation:

• while creating images from a primary dataset, a secondary dataset may be used to mask appropriate areas;
• user-defined color map and user-defined scaling capabilities for conversion of dataset values into imagery pixels;
• optional subsetting of swaths into user-defined regions of interest;
• jpeg and png browse images can have legends and/or overlays.

H2G allows only geographic projections at this time. Inclusion of other projections and image mosaic capabilities are under consideration.

Click here to download H2G_SPA1.5a.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

NPP Prototype Product Preview - 4/15/2009

NPOESS Preparatory Project (NPP) prototype products are now available at our gallery. Prior to the launch of the NPP spacecraft, the DRL and other mission development teams are porting many of the available processing algorithms provided by the mission. The DRL is implementing these algorithms for use in a Direct Readout environment. Initial efforts are focused on the algorithms for the Visible Infrared Imaging Radiometer Suite (VIIRS). Prior to the availability of VIIRS data, MODIS data from the Terra and Aqua satellites are used to proxy VIIRS Sensor Data Record (SDR) output in order to generate prototype NPP products for each pass observed by the DRL.

IPOPP Alpha Test Program Grows – 4/6/2009

The DRL's International Polar Orbiter Processing Package (IPOPP) Alpha Test Program now includes 25 test sites worldwide. Launched in February 2008, the program provides evolving NPP In-Situ Ground System (NISGS) technologies to test sites for evaluation on the road to NPP. The International Polar Orbiter Processing Package (IPOPP) leverages the NISGS technologies to maximize the utility of Earth science data for real-time decision-making. Feedback from test sites has proven invaluable as the DRL continues to refine IPOPP in anticipation of public release.

Let us know if you have any questions, which may be directed to our "Contact Us" system.

CRECBuilder Version 1.0 Released – 3/19/2009

The Direct Readout Laboratory (DRL) is pleased to announce the release of the CRECBuilder Version 1.0.

The CRECBuilder utility is a Java application that reads a MODIS Level-0 packet file and recreates the corresponding Production Data Set (PDS) (packet file + construction record/metadata file). The PDS Level-0 format has functioned as the data-sharing bridge between the EOS global data processing system and the EOS Direct Readout users.

There are two perceived benefits for future IPOPP Users:

• enables any EOS front end system to insert real-time Level-0 data into the International Polar Orbiter Processing Package (IPOPP) data system
• enables a user to insert archived Level-0 data into the IPOPP data system

Click here to download CRECBuilder_V1.0

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

IMAPP_SPA Version 2.0 Released – 2/4/2009

The Direct Readout Laboratory (DRL) is pleased to announce the release of the MODIS IMAPP_SPA Version 2.0.  Excepting the addition of a destripe algorithm, there is no change to the core set of science algorithms in this release.  The IMAPP and MODIS Destripe Direct Broadcast algorithms were provided to the DRL by the Space Science and Engineering Center (SSEC), University of Wisconsin-Madison.

This implementation of IMAPP is a source of science-sanctioned MODIS Level 2 atmospheric products: Cloudmask (MOD35); Cloudtop Properties and Cloud Phase (a portion of MOD06); Atmospheric Profiles (MOD07); and Aerosol (MOD04).

Enhancements:

• incorporates the MODIS Destripe Direct Broadcast Software Version 1.0 (September 24, 2008) destriping code, to remove artificial stripes that appear in the MODIS L1B 1km infrared bands due to detector-to-detector variations and mirror side effects
• grib2 ancillary data format capability
• installable as an International Polar Orbiter Processing Package (IPOPP) plug-in (IPOPP Version 1.6a or later)
• improved ancillary file logic in IPOPP mode; striving for the highest-quality science data products for real-time applications (many thanks to the SSEC)

Click here to download IMAPP_SPA_V2.0.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

L2GEN_SPA Version 5.8.9 Released – 1/8/2009

The Direct Readout Laboratory is pleased to announce the release of the L2GEN_SPA (Version 5.8.9).  The science algorithms within L2GEN (formerly MSL12) are provided by the Ocean Biology Processing Group (OBPG).  The OBPG advises that the MODIS SST and Ocean Color products are unaffected by this most recent release.

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files.

What’s new in L2GEN_SPA?:

1. supports both a standalone mode and an IPOPP mode (as an IPOPP plug-in for IPOPP v1.6 or later).
2. includes improved ancillary file logic (IPOPP mode), to provide the highest-quality science data for real-time applications. 
3. also includes a day/night pass check for the Ocean Color product (i.e., the chlor_a will not be processed for night passes). 

The L2GEN_SPA Version 5.8.9 has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

Click here to download L2GEN_SPA_V5.8.9.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Version 4.1 Released – 8/5/2008

The DRL is pleased to announce a new release of Simulcast (Version 4.1). This release includes Simulcast Services for both Linux and Windows users, as well as Version 4.1 of the Simulcast Viewer for Windows, published as a self-installing package.

Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single Viewer. The Simulcast Services processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).

Enhancements in v4.1:
Simulcast Version 4.1 addresses stability issues when multiple viewers are simultaneously connected to a server at resolutions greater than 1 km.  It is encouraged that all users update to v4.1

As an element of the IPOPP framework (a leveraged NISGS technology), Simulcast provides the real-time quicklook visualization capability.

Click here for more information on the Simulcast architecture.

Click here to download Simulcast.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODLST_SPA Version 4.14 Released – 7/11/2008

The DRL is pleased to announce the release of the MODLST_SPA (Version 4.14).  The MODLST algorithm was provided to the DRL by the MODIS Land Rapid Response Team.

This Land Surface Temperature (LST) algorithm uses brightness temperatures in MODIS bands 31 and 32 to produce day and night LST products at 1-km spatial resolutions in swath format. It uses MODIS Level 1B 1-km and geolocation HDF files and outputs LST in HDF.

The MODLST_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

Click here to download MODLST_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

L2GEN_SPA Version 5.8.3 Released – 7/9/2008

The DRL is pleased to announce the release of the L2GEN_SPA (Version 5.8.3).  The science algorithms within L2GEN (formerly MSL12) are provided by the Ocean Biology Processing Group (OBPG).

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files.

The L2GEN_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

Click here to download L2GEN_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MOD09_SPA Version 5.3.18 Released – 6/28/2008

The DRL is pleased to announce the release of the MOD09_SPA (Version 5.3.18).  This Land Surface Reflectance Science Processing Algorithm (SPA) uses the MODIS 1km, half km, and quarter km L1B Calibrated Geolocated Radiances HDF and MODIS Geolocation HDF input products, and utcpole, leapsec, and meteorology ancillary files, to create the MODIS Level 2 Land Surface Reflectance Product.

The MOD09_SPA allows processing of arbitrary sized granules, and simplifies the ancillary data requirements. The MOD09_SPA will work with either the grib1 or grib2 ancillary files. Beginning in September 2008, the NCEP meteorology data will be available in grib2 format only.

The MOD09_SPA has been packaged by both the Cooperative Institute for Meteorological Satellite Studies (CIMSS) and the DRL, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

Click here to download MOD09_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODISL1DB_SPA Version 1.5 Released – 4/14/2008

The DRL is pleased to announce the release of the MODISL1DB_SPA (Version 1.5). The MODIS Level 1 Direct Broadcast Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01) and Geolocation (MOD03/MYD03) products. It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules.

The MODISL1DB_SPA v1.5 package has been tested successfully on the following versions of Linux: CentOS, Fedora, Kubuntu, and SUSE. This release contains no processing code changes, however, the Ocean Biology Processing Group (OBPG) MODISL1DB 1.5 distribution has been updated to include statically linked binaries. This may allow users to run MODISL1DB on a wider variety of unsupported Linux systems.

This latest MODISL1DB SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

Click here to download MODISL1DB_SPA1.5.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

IPOPP Alpha Test Program – 2/22/2008

The DRL has launched an Alpha Test Program to deliver evolving NPP In-Situ Ground System (NISGS) technologies to Alpha test sites for evaluation on the road to NPP.  The International Polar Orbiter Processing Package (IPOPP) leverages the NISGS technologies to maximize the utility of Earth science data for real-time decision-making.  The DRL has delivered technolgies to the following Alpha test sites:

• United States Department of Agriculture (USDA) Forest Service Remote Sensing and Applications Center (RSAC)
• Oregon State University (OSU)
• University of South Florida (USF)
• National Institute for Space Research (INPE)
• National Commission for Biodiversity of Mexico (CONABIO)
• Center for Rapid Environmental Assessment and Terrain Evaluation (CREATE)
• Landgate Satellite Remote Sensing Services

It is important to note that the DRL continues to work closely with the science discipline teams from Land, Ocean and Atmosphere (respectively:  the MODIS Land Rapid Response Team, the Ocean Biology Processing Group, and the Cooperative Institute for Meteorological Satellite Studies) to bring you standalone versions of Science Processing Algorithms (SPAs).

Click here for a visual representation of all recent products produced by the IPOPP.  Beneath the thumbnails are provided full-resolution GeoTIFF and KML hyperlinks.  If you have a Google Earth Client installed, merely click on the desired KML hyperlink.  If you choose not to use the Google Earth Client, we also provide a Googlemaps presentation.

The IPOPP Team (IPO, CIMSS and DRL) continues to work with the NPP algorithms while evolving the SPA Model.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

GBAD_SPA Version 2.6 Released – 12/12/2007

The DRL is pleased to announce the release of the Aqua GBAD _SPA (Version 2.6).  The Ground Based Attitude Determination (GBAD) Ephemeris and Attitude Data Converter Science Processing Algorithm (SPA) creates ephemeris and attitude files from data packets in the Aqua spacecraft telemetry downlink.

The GBAD_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API). GBAD_SPA features improved logic in the aq_class_noradfile.c for reading the TLE file.

Click here for more information on GBAD.

Click here to download GBAD_SPA v2.6.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

RT-STPS Version 4.1 Released – 10/17/2007

The DRL is pleased to announce a new release of the Real-Time Software Telemetry Processing System (RT-STPS) (Version 4.1). RT-STPS is a standalone, Java-based software package that serves as a Consultative Committee for Space Data Systems (CCSDS) protocol and Level-0 processing data gateway.  It performs protocol and Level-0 processing for legacy Earth Observing System (EOS) and future NPOESS Preparatory Project (NPP) missions.

RT-STPS Version 4.0 addresses minor issues associated with some of the arguments in the scripts files, and updates the version string to the proper release number.  Version 4.1 has been tested with RS interleaves of 1, 4 and 5.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 4.1.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

CREFL_SPA Version 1.4.2 Released – 9/20/2007

The DRL is pleased to announce the release of the MODIS crefl_SPA (Version 1.4.2).  The MODIS Corrected Reflectance Science Processing Algorithm processes MODIS and Terra Level 1B Direct Broadcast data into Level 2 Corrected Reflectance products.

The crefl_SPA performs atmospheric correction with MODIS visible and near-infrared bands (bands 1 through 7).  It corrects for molecular (Rayleigh) scattering and gaseous absorption (water vapor and ozone) using climatological values for gas contents.  It requires no real-time input of ancillary data.  The Corrected Reflectance products created by crefl_SPA are very similar to the MODIS Land Surface Reflectance product (MOD09) in clear atmospheric conditions, since the algorithms used to derive both are based on the 6S Radiative Transfer Model.  The products show differences in the presence of aerosols, however, because the MODIS Land Surface Reflectance product uses a more complex atmospheric correction algorithm that includes a correction for aerosols.

The crefl_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

The Corrected Reflectance algorithm (Version 1.4.2) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download CREFL_SPA Version 1.4.2.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Version 4.0 Released – 9/19/2007

The DRL is pleased to announce a new release of Simulcast (Version 4.0). This release includes Simulcast Services for both Linux and Windows users, as well as Version 4.0 of the Simulcast Viewer for Windows, published as a self-installing package.  Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single Viewer. Simulcast is presently being developed under Java 1.5.  The Simulcast Services process and visualize instrument data in real time, and accept as input CCSDS packet streams (e.g., RT-STPS).

Enhancements in Version 4.0 include:

• Created more intelligent interface for display resolution.
• Improved the Mercator projection algorithm so that swaths near the poles have greater accuracy.
• Server can now transmit on multiple TCP ports simultaneously.
• Modified the loop display mode so that it will not display any passes with bad data
• Improved error trapping and display algorithm.
• Improved and consolidated documentation into a single PDF file.

As an element of the IPOPP framework (a leveraged NISGS technology), Simulcast provides the real-time quicklook visualization capability.

Click here for more information on the Simulcast architecture.

Click here to download Simulcast Version 4.0.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

IMAPP_SPA Version 2.0 Released – 9/18/2007

The DRL is pleased to announce the release of the MODIS IMAPP_SPA Version 2.0.  The International MODIS/AIRS Processing Package (IMAPP) Science Processing Algorithm (SPA) processes MODIS Aqua and Terra Level 1B Direct Broadcast data into the following Level 2 MODIS atmospheric products:  Cloudmask (MOD35); Cloudtop Properties and Cloud Phase (a portion of MOD06); Atmospheric Profiles (MOD07); and Aerosol (MOD04).

The IMAPP_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

IMAPP was provided to the DRL by the Space Science and Engineering Center (SSEC), University of Wisconsin-Madison.  Special thanks to the Cooperative Institute for Meteorological Satellite Studies (CIMSS) for co-developing an extended capability to the native IMAPP package in compliance with the goals of IPOPP.

Click here to download IMAPP_SPA Version 2.0.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

RT-STPS Version 4.0 Released – 9/10/2007

The DRL is pleased to announce a new release of the Real-Time Software Telemetry Processing System (RT-STPS) (Version 4.0). RT-STPS is a standalone, Java-based software package that serves as a Consultative Committee for Space Data Systems (CCSDS) protocol and Level-0 processing data gateway.  It performs protocol and Level-0 processing for legacy Earth Observing System (EOS) and future NPOESS Preparatory Project (NPP) missions.

RT-STPS Version 4.0 addresses issues in the Reed Solomon (RS) multiple-error decoding algorithm.  Version 4.0 has been tested with RS interleaves of 1, 4 and 5.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 4.0.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MSL12_SPA Released – 8/28/2007

The DRL is pleased to announce the release of the MODIS MSL12_SPA Version 5.7.1.  The Multi-Sensor Level 1 to Level 2 (MSL12) algorithm was extracted from the SeaWiFS Data Analysis System (SeaDAS).  It produces science-sanctioned MODIS Level 2 Ocean Color (daytime product, includes Chlorophyll-a concentration) and Sea Surface Temperature (SST) products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files.

MSL12_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

For more details, the MSL12_SPA document is attached.

SeaDAS and its component MSL12 algorithm were provided to the DRL by the Ocean Biology Processing Group (OBPG) at NASA GSFC.

Click here to download MSL12_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODISL1DB_SPA Version 1.4 Released – 8/3/2007

The DRL is pleased to announce the release of MODISL1DB_SPA version 1.4. The MODISL1DB Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01)and Geolocation (MOD03/MYD03)products.  It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules.

This latest MODISL1DB SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The MODISL1DB v1.4 source code has been updated to improve Level 0 to Level 1A processing, geolocation processing, and Level 1A to Level 1B processing. (A detailed list of specific changes is contained in the PDF document included in the software package.)  The SPA code has been updated to include a geocheck_threshold parameter, which gives the user the flexibility to specify the threshold for a geolocation validation test.  Additionally, an improvement was made to the auto-download of leap second (leapsec) and Earth motion (utcpole) ancillary files.

The algorithm was enhanced by the Ocean Biology Processing Group (OBPG) at NASA/GSFC; the Cooperative Institute for Meteorological Satellite Studies (CIMSS) at the University of Wisconsin; and the DRL at NASA/GSFC.

Click here to download MODISL1DB_SPA Version 1.4.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODIS Multidiscipline Data Product Gallery – 7/31/2007

The DRL is pleased to present the MODIS Multidiscipline Data Product Gallery.

Of relevance here, in addition to the data product gallery, is how these products are created and in what format.  One of the goals of the International Polar Orbiter Processing Package (IPOPP) is to create multi-mission, multidiscipline data products while supporting the respective mission-specified data format, and ultimately to provide a data product in a more standard (portable) data format.

The gallery tangibly represents this goal.  Each Science Processing Algorithm (SPA) running under IPOPP creates an HDF output.  A DRL tool known as H2G (HDF to GeoTIFF) converts the data product output of each SPA into a GeoTIFF format, along with the respective science-sanctioned color map information.  This GeoTIFF format is portable to any image viewer, while being compatible with Geographic Information System (GIS) environments.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

NDVIEVI_SPA Version 2.2 Released – 6/28/2007

The DRL is pleased to announce the release of NDVIEVI_SPA (heritage MOD13 algorithm).  This Normalized Difference Vegetation Index (NDVI)/Enhanced Vegetation Index (EVI) algorithm uses all three MODIS Level 1B files (1KM, HKM and QKM) and outputs NDVI and EVI in a single HDF file.  NDVI/EVI is a daytime only product.  The algorithm is applied on corrected reflectances in MODIS bands 1, 2 and 3.

NDVIEVI_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The Level 2 MODIS NDVI/EVI algorithm (Version 2.2) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download NDVIEVI_SPA Version 2.2

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MOD14_SPA Released – 6/18/2007

The DRL is pleased to announce the release of MOD14_SPA.  This software package contains the latest Level 2 MODIS Active Fire Product (MOD14) Science Processing Algorithm (SPA), Version 5.  This algorithm uses brightness temperatures derived from MODIS bands 21, 22 and 31.  MODIS bands 1, 2, 7 and 32 are used to reject false alarms and to mask clouds.  The algorithm reads a MODIS 1-km Level 1B file along with the associated geolocation file, and outputs a two-dimensional fire mask in HDF.

MOD14_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  From this point forward all of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The MODIS Active Fire Product (MOD14) Production Code (Version 5.0.0, April 17, 2006) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download MOD14_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODLST_SPA Version 4.13 Released – 6/14/2007

The DRL is pleased to announce the release of MODLST_SPA.  This software package contains the Level 2 MODIS Land Surface Temperature (LST) Science Processing Algorithm (SPA).  This LST algorithm uses brightness temperatures in MODIS bands 31 and 32 to produce day and night LST products at 1-km spatial resolutions in swath format.  It uses MODIS Level 1B 1-km and geolocation Hierarchical Data Format (HDF) files and outputs LST in HDF.

MODLST_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  From this point forward all of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The Level 2 MODIS LST production code (Version 4.13, May 31, 2007) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download MODLST_SPA Version 4.13

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODISL1DB_SPA Version 1.3 Released – 6/1/2007

The DRL is pleased to announce the release of MODISL1DB_SPA. The MODISL1DB Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01 )and Geolocation (MOD03/MYD03) products.  It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules.

MODISL1DB_SPA represents a significant milestone for the Direct Readout Community, as it is the first SPA that has been packaged and released fulfilling the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation. 

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort. From this point forward all of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

This MODIS Level-1 algorithm was originally enhanced by the Ocean Biology Processing Group (OBPG) at NASA/GSFC; the Cooperative Institute for Meteorological Satellite Studies (CIMSS) at the University of Wisconsin; and the DRL at NASA/GSFC.  The algorithm was included within the MODIS Level 1 Direct Broadcast software (MODISL1DB 1.3, August 1, 2006).

Click here to download MODISL1DB_SPA Version 1.3

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Viewer for Windows Version 3.2.8 Released – 3/6/2007

The DRL is pleased to announce a new release of the Simulcast Viewer Version 3.2.8 for Windows Users. This is the same viewer bundled with the prior Simulcast Services release, however, based on user feedback we packaged this viewer-only version for Windows as a self-installing package. Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time with a single viewer application. Simulcast is presently being developed under Java 1.5.

Enhancements in Version 3.2.8 of the Viewer include:

• Enhanced the TCP socket interface to close connection when an inactivity timeout occurs
• Better tooltips when the mouse pointer hovers over a button
• Enhanced documentation (Draft User's Guide) included

Click here for more information on Simulcast.

Click here to download Simulcast Viewer for Windows Version 3.2.8.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Services Version 3.2.8 Released – 3/1/2007

The DRL is pleased to announce a new release of Simulcast Services (Version 3.2.8) for both Linux and Windows Users. Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single client. Simulcast is presently being developed under Java 1.5. The Simulcast Services processes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).

Enhancements in Version 3.2.8 include:

• More band/resolution options for downstream servers (when operated as a constellation of Simulcast servers)
• A fully-featured Viewer (which replaces the Client in previous versions of Simulcast)
• Enhanced the TCP socket interface to close connection when an inactivity timeout occurs
• Better tooltips when the mouse pointer hovers over a button
• Enhanced documentation (Draft User's Guide for Viewer) included
• Support for IPv6-formatted IP addresses
• Server now attempts to fix corrupted passes at start-up
• Server performs a periodic loopback test to check for network connection problems
• Installation of Simulcast Services using a Windows Installer (exe) file and functions as a 'Windows system service

Very soon the DRL will release Version 3.2.8 of a separate Simulcast Viewer, packaged as a Windows Installer (exe) file (this viewer already resides within this Simulcast Services release).

Click here for more information on Simulcast.

Click here to download Simulcast Services Version 3.2.8.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Terra and Aqua Direct Broadcast Downlink Scheduling Information Restored – 2/21/2007

The DRL is pleased to announce the restoration of the Terra and Aqua Direct Broadcast downlink scheduling information. This service is provided to the global Direct Readout sites via the DRL in
two forms: FTP access and Web-based.

Terra:

?id=dspContent&cid=15
https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/schedule/terra/downlink/
https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/schedule/terra/dsn/

Aqua:

?id=dspContent&cid=14
https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/schedule/aqua/downlink/

Let us know if you have any questions, which may be directed either to our "Contact Us" system, Patrick Coronado, or Kelvin Brentzel.

RT-STPS Version 3.07 Released – 12/20/2006

The DRL is pleased to announce a new release of the Real-time Software Telemetry Processing System (RT-STPS) (Version 3.07). This version features enhanced build scripts and installation documentation for Windows users.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 3.07.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or Kelvin Brentzel.

NPP Mission Data Format Control Book (MDFCB) Released - 12/5/2006

The NASA Direct Readout Laboratory is pleased to announce the release of the NPP Mission Data Format Control Book (MDFCB). This document describes the data formats and contents of the National Polar-Orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) satellite mission data, and provides information to identify, distinguish and extract all of the High Rate Data (HRD) mode (direct broadcast) data.

You may access the NPP MDFCB through the Direct Readout Web Portal at:

?id=dspContent&cid=12

Let us know if you have any questions, which may be directed either to our "Contact Us" system, Patrick Coronado, or Kelvin Brentzel.

"Simulcast Viewer" (Version 3.2.4) for Windows Released - 11/21/2006

The NASA Direct Readout Laboratory is pleased to announce the release of the "Simulcast Viewer" (Version 3.2.4) for Windows. This is the viewer from Simulcast Version 3.0, along with visualization enhancements, in a self-installing package. If necessary, it will also install the JRE Version 1.5. We anticipate the release of an updated Simulcast Services package for Windows/Linux in the very near future. Simulcast is a Java-based multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single viewer. Simulcast is presently being developed under Java 1.5. Enhancements in Version 3.2.4 for Windows include:

• Multiple passes from multiple sources (i.e., a combination of spacecraft and ground station) may now be viewed simultaneously on the map layouts
• Preferences selected on the options screen are now persistent, so they remain selected after closing and re-launching the application
• A video recorder has been added that allows AVI and QuickTime movies to be created containing the contents of the entire Simulcast Viewer window, or just the map or instrument layouts
• Passes may now be sorted by time or name
• A default visual (true color, gray scale, etc.) may now be selected for new passes being viewed
• Playback looping/throttling has been added to provide a variety of playback scenarios (e.g., viewing multiple passes from multiple sources simultaneously)

Click here for more information on Simulcast.

Click here to download Simulcast Version 3.2.4.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Kelvin Brentzel directly.

Construction Record Lister Version 1.01 Released – 11/3/2006

The Direct Readout Laboratory (DRL) is pleased to announce a new release of the "Construction Record Lister" software package (Version 1.01). This Java program displays—in human readable form—the contents of a Production Data Set (PDS) construction record. For Terra and Aqua, the construction record
component of the PDS contains the instrument Level-0 metadata.

You may access this new version on the Direct Readout Web Portal at:

?id=software

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Kelvin Brentzel directly.

On the Road to NPP – 9/22/2006

The GSFC Direct Readout Laboratory (DRL) is pleased to update the Direct Readout community on the present state of the open source technology suite on the road to the NPOESS Preparatory Project (NPP).

The DRL is developing a Direct Readout technology framework following a Modular Components Approach (MCA) Model.  This MCA has many benefits but, foremost, in response to your requests for the NPP era, the DRL will promote platform-independent code, consistent interfaces, and enhanced data product portability.

A very important note:  We are working closely with the science discipline teams from Land, Ocean, and Atmosphere to bring you standalone versions of Science Processing Algorithms (SPAs).

Status:
The technology suite under development and select Terra/Aqua SPAs are running on the DRL's publicly-accessible computing cluster.  At present the NISGS/IPOPP technology suite is producing 10 Level-2 products for every Terra and Aqua pass, 24/7.  The new location for accessing products, meta-data (w/product traceability), and ancillaries is:

https://is.sci.gsfc.nasa.gov/

Let us know if you have any questions, which may be directed either to our "Contact Us" system or, if necessary, to Patrick Coronado or Kelvin Brentzel directly.

RT-STPS Version 3.06 Released – 6/14/2006

The DRL is pleased to announce a new release of the Real-time Software Telemetry Processing System (RT-STPS) (Version 3.06). This version features more robust handling of socket output channels. It includes an interface to the NISGS Status/Event Logging System (NSLS), and NSLS is bundled with the Version 3.06 distribution now available for download. Version 3.06 incorporates Java Service Wrapper (JSW) support to allow the RT-STPS Server to be installed as a system service on both Windows and Linux platforms, and the code has been recompiled under Java Development Kit (JDK) Version 1.5. Lastly, we have provided enhanced installation procedures for both Windows and Linux platforms.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 3.06.

Simulcast Version 3.0 Released – 5/9/2006

The DRL is pleased to announce a new release of the Simulcast toolkit (Version 3.0). Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single client. Simulcast is presently being developed under Java 1.5. Enhancements in Version 3.0 include:

• Real-time geolocation and pseudo-calibration, and projected on Mercator and Polar map for MODIS
• Reorganized Client windows to maximize viewable image area
• Auto Day/Night mode to allow passes near a pole to be viewed in TrueColor mode during the day portion, and Infrared mode during the night portion
• Satellite orbits predicted (at present: Aqua and Terra) and projected on Mercator and Polar map

Click here for more information on Simulcast.

Click here to download Simulcast Version 3.0

Ground Based Attitude Determination (GBAD) Software Version 2.5 Released – 5/2/2006

The DRL is pleased to announce a new release of the Ground Based Attitude Determination (GBAD) processing software (Version 2.5). Version 2.5 incorporates syntax enhancements that previously inhibited compilation using the GCC 3.4.4 Compiler, and includes modifications for execution on both 32-bit and 64-bit Intel-compatible machines. Although consideration was given to rendering this modification machine-independent, we are not able to verify correctness on all platforms.

Click here to download GBAD Version 2.5.

Earth Observer Article on 2005 Direct Readout Meeting - March/April 2006

In its March/April 2006 edition, The Earth Observer pubished an article about the International EOS/NPP Direct Readout Meeting 2005. The meeting was held October 3 - 6 at the Mediterranean Agency for Remote Sensing and Environmental Control (MARSec) in Benevento, Italy.

Click here to download the article (pdf).

Institutional Algorithms - 08/19/2005

Institutional Algorithms are no longer provided on the Direct Readout Portal.

DRL News, 1999-2003

Simulcast software release, Patrick Coronado, 8 May 2003

MODIS Institutional Algorithm Release, Patrick Coronado, 4 May 2003

New Lookup Tables for Direct Broadcast Level 1B code, Christopher Lynnes, 15 April 2003

Release 2.2 of MODIS Level 1 Direct Broadcast software, Christopher Lynnes, 11 April 2003

FTP site for GSFC MODIS Level 1 direct broadcast data, Christopher Lynnes, 14 February 2003

New Survey of DB Sites Worldwide, James Dodge, 25 November 2002

Aqua Direct Broadcast Science Data availability, Kelvin Brentzel, 16 July 2002

Release 2.0 of MODIS Level 1 Direct Broadcast software, Christopher Lynnes, 27 June 2002

Aqua TLE availability, Kelvin Brentzel, 5 June 2002

MODIS Level-2 Algorithm Release, Pat Coronado, 24 May 2002

AQUA GBAD Algorithm Release, Pat Coronado, 16 May 2002

MODIS Fire Detection Algorithm, Patrick Coronado, 3 April 2002

Real-Time Software Telemetry Processing System (RT-STPS), Pat Coronado, 4 February 2002

NEpster release, Pat Coronado, 3 December 2000

Patch available for MODIS L1 software, Chris Lynnes, 11 October 2001

Release 1.1 of MODIS Level 1 Processing software, Chris Lynnes, 5 October 2000

File specifications for the MODIS Level 1 and Geolocation files, Chris Lynnes, 8 September 2000

Release 1.0 of MODIS Level 1 Processing software, Chris Lynnes, 6 July 2000

Terra Frame Processing Software, Pat Coronado note, 2 May 2000

Alpha release of MODIS L1 software, Chris Lynnes note, April 2000

Raw MODIS data is available for FTP download, Pat Coronado memo, March 1999