Title: Lessons Learned from Airs for Future Grating IR Sounders
Abstract: Spaceborne infrared atmospheric sounders measure the spectrum of the upwelling radiance in the infrared with ultrahigh spectral resolution. The resolution is sufficient to measure absorption features of atmospheric constituents enabling retrieval of atmospheric temperature and water vapor profiles, surface emission and atmospheric constituents. The Atmospheric Infrared Sounder (AIRS) was the first hyperspectral grating-based infrared sounder designed for this purpose and is still operational today. Future IR sounders must achieve higher spatial and temporal resolution to match improvements in forecast models and be less costly to match anticipated future budget pressures. Higher temporal resolution can be achieved in several ways including operation in Geostationary Earth Orbit (GEO) or in constellations of LEO satellites. Higher spatial resolution can be achieved using larger format focal plane assemblies in the instruments and larger aperture telescopes. Grating spectrometer IR sounders are well suited to both these applications.
Publication Year: 2020
Publication Date: 2020-09-26
Language: en
Type: article
Indexed In: ['crossref']
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