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Analysis on the variational model of synthetic aperture radar sea surface wind retrieval

Jiang Zhu-Hui Zhou Xiao-Zhong You Xiao-Bao Yi Xin Huang Wei-Quan

Analysis on the variational model of synthetic aperture radar sea surface wind retrieval

Jiang Zhu-Hui, Zhou Xiao-Zhong, You Xiao-Bao, Yi Xin, Huang Wei-Quan
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  • Abstract views:  714
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Publishing process
  • Received Date:  02 March 2014
  • Accepted Date:  31 March 2014
  • Published Online:  05 July 2014

Analysis on the variational model of synthetic aperture radar sea surface wind retrieval

  • 1. Beijing Institute of Applied Meteorology, Beijing 100029, China
Fund Project:  Project supported by the High Resolution Earth Observation System Major Special Project Youth Innovation Foundation of China (Grant No. GFZX04060103-3-12) and the State Key Development Program for Basic Research of China (Grant No. 2010CB951901).

Abstract: Error analysis is carried out to test the variational model of synthetic aperture radar sea surface wind retrieval. On condition that the background error is maximum, the analysis error is lower than the background error, and with the increase of the background wind direction, the analysis error changes periodically; on condition that the background error gradually increase, the analysis error increases gradually and its deviation direction coincides with the background error deviation direction; under the condition of specific background field, the variational model is compared with the direct inversion model: when the background wind speed is low, the variational model error is slightly high, when the background wind speed is high, the variational model error is significantly low. Generally, the variational model wind speed error is less than 1.60 m/s, and the wind direction error is less than 17.15°, which are better than those of the direct inversion model.

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