Application of satellite gravity field model in ocean circulation analyzing
Three kinds of earth gravity field models,namely GOCE,GRACE and DGM,as well as the average sea surface height model obtained by satellite altimetry are selected in this paper to calculate and compare the geostrophic current under these four models.The results show that:The accuracy of medium and long wave calculated using the GOCE gravity field model is higher than the GRACE,and it can show a smaller scale and more detailed geostrophic current.The high-frequency information of the global mean dynamic topography(MDT)is effectively restored by using the remove-restore method,which can signif-icantly increase the detailed characteristics of the geostrophic current.
ocean circulationGOCE satellitegaussian filteringmean dynamic topographygeostrophic current
万方数据
维普
