Having analyzed the ECMWF wind data of recent years, this paper found that the establishment of Summer monsoon over the South China Sea occurs around the middle of May, which is characterized by northeastward stretching of the equatorial westerly belt and forming of an east-west-oriented flow shear along the coast of South China.
分析近年欧洲中心５月份逐日格点风资料，发现南海季风建立在５月中旬，其流场特征为赤道西风带向东北伸展，并汇入华南沿海的横向切变线内。