As for the ending of the FRS, it is due to the seasonal transition of the general circulation in East Asia, especially due to the first northward shift of the Western Pacific Subtropical High (WPSH).

 
  • 开始期以后则有利于冷空气南下,造成连续降水,使华南进入前汛期.;而前汛期的结束,则是由于东亚大气环流的季节调整,尤其是西太平洋副热带高压的第一次北跳所造成的
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