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利用2000~2008年的卫星高度计资料和QuikSCAT风场资料,反演了全球的海表的地转流和Ekman流,将两者合成后生成了0.5°×0.5°的逐周全球表层流产品。在计算Ekman流的时候,引入了权重函数,改进了Lagerloef方法中Ekman流在25°S和25°N上的不连续问题。分析表明:卫星资料反演的流产品能够反映出海表流场的特征,将其分别于TAO观测和SGUD流产品进行定量化的比较显示,所得流产品具有较高的反演精度和可信度,说明改进的方法是有效的。
Based on the satellite altimetry data and QuikSCAT wind field data from 2000 to 2008, the global earth surface turbulence and Ekman flow are retrieved. The synthesized global surface layer flow products with 0.5 ° × 0.5 ° are generated by the combination of the two. When calculating Ekman flow, a weight function is introduced to improve the discontinuity problem of Ekman flow at 25 ° S and 25 ° N in Lagerloef method. The analysis shows that the flow products reflected by the satellite data can reflect the characteristics of the flow field in the sea surface. The comparison between the TAO observations and the SGUD flow products quantification shows that the flow products obtained have high inversion accuracy and reliability , Indicating that the improved method is effective.