HYCOM-based analysis of coastal upwelling in the southwest Yellow Sea
Coastal upwelling has a strong influence on the distribution of nutrients and thus on the distribution of marine ecology.In this paper,HYCOM model data examined by remote sensing SST data was used to analyze the distribution of coastal upwelling in the Southwest Yellow Sea.The analysis of the marked cold water patches and upwelling in the Southwest Yellow Sea in summer from three time scales,including climatic state variation,interannual variation and intra-seasonal variation,showed that the latitude of the center of the surface cold water patches averaged over many years was near 33.60°N.In the interannual variation,the coastal upwelling influenced the area of the surface cold water patches and the vertical velocity of the coastal upwelling influenced the sea surface temperature;in the intra-seasonal variation,the coastal upwelling and in the intra-seasonal variation,the coastal upwelling is moderately correlated with the area of cold water patch and sea surface temperature.Based on the ERA5 reanalysis of wind field data,we analyzed the mechanism of upwelling in the southwest Yellow Sea from the effects of wind stress and wind stress cyclicity on Ekman transport and Ekman pumping,and the results showed that wind stress and wind stress cyclicity were moderately correlated with the mean velocity of coastal upwelling.
coastal upwellingsouthwest Yellow SeaHYCOMcold water spot
NETL
NSTL
万方数据
