Abstract
After Analyzing correlations of ocean surface wind speeds and the channel combinations of brightness temperature, it is found that the difference of brightness temperature between 22GHz vertical polarization and 19GHz horizontal polarization and the ratio of the difference between 19GHz vertical polarization and 19GHz horizontal polarization to the difference between 37GHz vertical polarization and 37GHz horizontal polarization should be used to retrieve ocean surface wind speed. So we add these two channel combinations to improve the Goodberlet's algorithm and derive wind speeds from the brightness temperature of SSM/I five channels measured in 2005. Comparing the results of two algorithms against in-situ buoy wind speeds shows that the improved wind speed retrieval algorithm is better than Goodberlet's algorithm, the wind speed estimation accuracy improves by 0.9m/s and 0.5m/s under clear condition and cloudy condition respectively.
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