wpsa

Therefore , the short-term eastward retreat of WPSA is influence by the EV , the mechanisms lie in dynamic effect and thermodynamic effect .

可见，梅雨期西太副高的短期东退受东风带扰动影响，其机制不仅表现在动力效应上，同时热力作用亦不可忽略。

The convergence of the southwesterly to the north of 30 ° N along the northwest of the WPSA strengthens the local ascending motion , which provides a large-scale background favorable for the torrential rain .

沿增强了的西太平洋副高西北侧的偏西南气流在30°N以北辐合，增强了局地的上升运动，为暴雨的产生创造了大尺度的背景流场；

The establishment of a blocking anticyclone in the mid-higher latitude , the strong and the stable westerly jet in the middle latitude and the abnormal actively convective in the tropical region are conducive to the relative stability of the WPSA .

中高纬度阻塞高压双阻型的建立、强劲而稳定少动的中纬度西风急流以及热带异常活跃的对流，均有利于副热带高压的相对稳定；