Abstract: AMSU-A, the Advanced Microwave Sounding Unit, is a 15-channel passive microwave radiometer used to profile atmospheric temperature and moisture from the earth's surface to ~45 km (3 millibars). All orbits beginning in the day (00:00:00 - 23:59:59 UTC) are stored in one daily HDF-EOS file. (THIS IS WRONG) There are 15 (channel) arrays, as well as corresponding ... Latitude, Longitude, and Time. Each daily file is compressed (gzip). The Swath Data Products are packaged in HDF-EOS format, with one file per orbit. These daily files are tarred together using the UNIX tar command into a daily file that is then compressed using the UNIX 'gzip' command.
"NOAA-17 AMSU-A1 suffered an instrument failure on October 28, 2003. As a result, AMSU-A channel-3 to channel-15 antenna temperatures are no longer available (AMSU-A channel-1 and channel-2 are working properly). We have made changes to the NOAA-17 AMSU product algorithms which allow us to keep generating four AMSU products: TPW, CLW, RR, and IWP".