由此讨论了热带东风气流中的低压形成。
Then the depression formation in tropical easterly flow is discussed.
南亚高压和东风气流的部分特征参数有明显的年际和年代际变化。
The interdecadal variations of some characteristic parameters of the SAH and the easterly wind are obvious.
当热带东风气流减弱时，低压中心位置偏北，低压强度增强，低压纬向宽度变大；
When the tropical easterly flow decreases, the center position of depression moves northward, the strength of depression increases and the zonal width of depression widens.
低涡切变线、西南风低空急流、东风气流和地面倒槽是本次暴雨的主要影响系统，该地区维持高能，饱和，位势不稳定的小环境，有利于特大暴雨的产生和维持。
The following conclusions can be drawn. 1. The main influence systems of causing this heavy rainfall are southwest vortex, shear line and southwest low-level jet.
低涡切变线、西南风低空急流、东风气流和地面倒槽是本次暴雨的主要影响系统，该地区维持高能，饱和，位势不稳定的小环境，有利于特大暴雨的产生和维持。
The following conclusions can be drawn. 1. The main influence systems of causing this heavy rainfall are southwest vortex, shear line and southwest low-level jet.
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