CEOS Instrument: InfraRed Atmospheric Sounder




Instrument:IRAS
Agencies: NRSCC [Primary]
 CAST
 NSMC-CMA
Missions: FY-3A
 FY-3B
 FY-3C
Status:Operational
Type:Narrow-band channel IR radiometer
Description:Atmospheric sounding for weather forecasting
Spatial Resolution: 14 km
Swath Width: 952km
Wavebands: VIS - TIR: 0.65 - 14.95 ?m (26 channels)
Technology: Narrow-band channel IR radiometer
Description: Radiometer operating in MWIR and TIR with many channels of bandwidth around 1 % in absorption bands of CO2 and H2O to retrieve temperature and humidity profiles in cloud-free or partially cloudy areas. Cross-nadir scanning for vertical profiling. A few tens of channels. Spatial resolution typically 10-20 km horizontal, ~ 2 km vertical (referred to the retrieved profile). Applicable in LEO and GEO.

Measurement List:

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CEOS Systems Engineering Office (SEO)

CEOS Data Base Version: 17 - Created: 2012-01-18