CEOS Instrument: Infra-Red Sounder




Instrument:IRS
Agencies: EUMETSAT [Primary]
 ESA
Missions: Meteosat Third Generation-S1 (sounding)
 MTG-S1
 MTG-S2
 Meteosat Third Generation-S2 (sounding)
 Sentinel-4 A
 Sentinel-4 B
 Sentinel-5
Status:Being developed
Type:Medium-resolution IR spectrometer
Description:Measurements of vertically resolved clear sky atmospheric motion vectors, temperature and water vapour profiles
Spatial Resolution: Horiontal: 4 km at SSP, Vertical: 1 km
Swath Width: 640 km x 640 km dwells, step and stare, moving alternatly E-W and W-E moving up S-N one dwell step at the end of each row of dwells. Each disc is divided in 4 areas of Local Area Coverage (LAC).
Wavebands: LWIR: 700 - 1210 cm^-1, MWIR: 1600 - 2175 cm^-1
Technology: Medium-resolution IR spectrometer
Description: Spectrometer operating in MWIR and TIR with spectral resolution typically around 0.1 % to retrieve temperature and humidity profiles from absorption bands of CO2 and H2O in cloud-free or partially cloudy areas, and also total columns of some greenhouse gas species (and coarse profile of O3). Cross-nadir scanning for vertical profiling and total-columns. Many thousands of channels. Spatial resolution typically 10-20 km horizontal, ~ 1 km vertical (referred to the retrieved profile). Applicable in LEO and GEO.

Measurement List:

(select measurement name to view details)



CEOS Systems Engineering Office (SEO)

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