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Title: Combined active and passive microwave sensing of ocean surface wind vector from TRMM
Authors: Kasparis, Takis 
Soisuvarn, Seubson
Jones, Wilma L.
Keywords: Image converters;Radar;Radiometers;Microwaves;Winds
Issue Date: 2003
Publisher: IEEE
Source: International Geoscience and Remote Sensing Symposium, 2003, Volume 2, Pages 1257-1260
Abstract: This paper presents a new ocean wind vector measurement technique that uses the combined passive and active microwave measurements respectively from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) and the Precipitation Radar (PR). The wind speed is inferred by TMI over a wide swath that includes the narrower PR swath. The PR scans cross-track ± 18°; and near the swath edges, where the radar backscatter responds to both the magnitude and direction of the surface wind, we use the microwave radiometer estimate of wind speed and the measured sigma-0 at incidence angles greater than 15 degrees to derive wind direction. Because the PR provides only a single azimuth look, multiple possible wind direction solutions exist. The ability to select the proper (single) direction is beyond the scope of this paper; but comparisons are presented between the "closest" retrieved TRMM wind vectors and near-simultaneous wind vectors measured by the QuikSCAT satellite scatterometer to demonstrate the potential for measuring ocean surface vector winds.
ISBN: 0-7803-7929-2
Rights: © 2003 IEEE
Type: Book Chapter
Appears in Collections:Κεφάλαια βιβλίων/Book chapters

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