STUDY ON SST IN THE NORTHWESTERN PACIFIC OCEAN WITH SATELLITE OBSERVATIONS*

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  • On the basis of extracting the clear brightness temperature in GMS-4 infrared data,the tests have been carried out by using three methods for SST retrieval in the northwestern Pacific Ocean in August 1993.Considering error amplification is the inherent feature in the single channel physical method,two statistical methods are developed.One is a single channel method.Its precision is 1.186℃,which is superior to that of other similar methods.The other is a multi-channel method using both TOVS and GMS-4 data.Its precision is 1.061℃,which is matched with that of other current multi-channel statistical methods(0.5-1.36℃).The retrieval SST distributions obtained by the two methods are in good agreement with conventional observations.
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