Raw, binary data from satellite sensors is transmitted to Earth as “RDR” files (Raw Data Records). RDR files are processed (data is calibrated and geolocated) and converted to “SDR” files (Sensor Data Records), which are the data most users receive. These data are also converted from raw counts to radiance, reflectance and/or brightness temperature. Some SDR files are processed and mapped, which converts them to “EDR” files (Environmental Data Records) containing environmental parameters and imagery.
Find satellite data online with the Comprehensive Large Array-data Stewardship System (CLASS), which is an electronic library of NOAA environmental data.