CEOS Instrument: SeaWinds

Agency: NASA
Missions: ADEOS-II
Type:Radar scatterometer
Description:Measurement of surface wind speed and direction. The SeaWinds antenna on QuikSCAT stopped rotating in November 2009, and the instrument no longer collects ocean wind vector data. However it still provides calibration data for other on-orbit scatterometers, which enables the continuation of a climate-quality wind vector dataset.
Spatial Resolution: 25 km
Swath Width: 1600 km
Wavebands: Microwave: 13.402 GHz
Technology: Radar scatterometer
Description: Radar with very accurate calibration, to observe an earth’s spot from several directions (ahead, after, aside) and measure differential backscatter coefficients (s0) from sea capillary waves (thus observing surface wind). On land, the s0 are correlated with soil moisture. Two concepts exist: electronic scanning, side looking, exploiting C-band (~ 5 GHz); and conical scanning, exploiting Ku-band (~ 13 GHz). The resolution is typically 25-50 km, the swath 1100-1500 km. Applicable only in LEO.

Measurement List:

  Wind vector over sea surface (horizontal)

(select measurement name to view details)

CEOS Systems Engineering Office (SEO)

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