CEOS Instrument: Special Sensor Microwave Temperature Sounder

Agencies: NOAA [Primary]
 DoD (USA)
Missions: DMSP F-8
 DMSP F-10
 DMSP F-11
 DMSP F-12
 DMSP F-13
 DMSP F-14
 DMSP F-15
Type:Absorption-band MW radiometer/spectrometer
Description:Measures Earth's surface and atmospheric emission in the 50 - 60 GHz oxygen band
Spatial Resolution: 174 km diameter beam
Swath Width: 1500 km
Wavebands: Microwave: 7 channels in the 50 - 60 GHz range
Technology: Absorption-band MW radiometer/spectrometer
Description: Radiometers operating in bands of absorption from O2 (typical, ~ 54 GHz) and from H2O (typical: ~ 183 GHz) enable measuring the atmospheric temperature and humidity profiles in nearly-all-weather conditions. Cross-nadir scanning is utilised, though also conical scanners use to include channels in absorption bands. Radiometric accuracy is a driver for profiling, thus scanning speed must be relatively slow, that implies coarse resolution (typical, 50 km for 54 GHZ, 15 km for 183 GHz, horizontal; the vertical, referring to the product, is ~ 2 km). Applicable in LEO; however by adding higher frequencies (e.g. 118 and 425 GHz for O2 and 380 GHz for H2O) sounding is also possible from GEO.

Measurement List:

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CEOS Systems Engineering Office (SEO)

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