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A new algorithm for microwave radiometer remote sensing of sea surface salinity without influence of wind

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The microwave radiation of the sea surface, which is denoted by the sea surface brightness temperature, is not only related with sea surface salinity (SSS) and temperature (SST), but also influenced by sea surface wind. The errors of wind detected by satellite sensor have significant influences on the accuracy of SSS retrieval. The effect of sea surface wind on sea surface brightness temperature, i.e. ΔTh,v , and the relations among ΔTh,v , wind speed, sea surface temperature, sea surface salinity and incidence angle of observation are investigated. Based on the investigations, a new algorithm depending on the design of a single radiometer with dual polarizations and multi-incidence angles is proposed. The algorithm excludes the influence of sea surface wind on SSS retrieval, and provides a new method for remote sensing of SSS.
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Document Type: Research Article

Affiliations: 1: Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing, PR China 2: Physical Oceanography Laboratory, Ocean University of China, Qingdao, PR China

Publication date: December 1, 2008

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