MODIS Direct Broadcast
About MODIS Direct Broadcast
MODIS does store data on board for later download, but it also broadcasts the raw data it collects immediately, on the chance that someone on the ground below is listening. This is called Direct Broadcast of the data. NASA/GSFC has the antennas and other equipment necessary to receive and process MODIS Direct Broadcast data whenever the spacecraft is above the horizon. The Overpass Predictor can be used to determine when there will be a Terra or Aqua spacecraft overpass of NASA/GSFC (Greenbelt, MD) or any other location that may have a MODIS Direct Broadcast receiving station.
About the Direct Broadcast images
The images are built from MODIS bands 1 (red), 4 (green) and 3 (blue). The images shown have a resolution of 1 kilometer per pixel at nadir (the picture centerline). For higher resolution versions of the images shown, please browse our Image Gallery.