- AIRS Hyperspectral Instrument A high resolution spectrometer with 2378 bands in the thermal infrared spectral region (3.74 - 15.4 micrometers) and 4 bands in the visible spectral region (0.4 - 1.0 micrometers). These ranges determine atmospheric temperature with an accuracy of 1 K per 1 km thick layer in the troposphere and moisture profiles at an accuracy of 20% per 2 km thick layer in the lower troposphere (20% - 60% in the upper troposphere).
- AMSU-A Is a 15 microwave channel temperature/humidity sounder that measures global atmospheric temperature profiles and provides information on atmospheric water in all of its forms (with the exception of small ice particles, which are transparent at microwave frequencies).
- HSB is primarily a humidity sounder providing supplementary water vapor and liquid data to be used in the cloud clearing process. Due to its higher spatial resolution (which equals that of AIRS) and a higher scan rate, the measurement density is 2.4 times that of AMSU-A. See the HSB instrument guide for details. The HSB instrument failed on February 5th, 2003.
Learn more about AIRS