云南台风降雨天气成因分析
Analysis on Causes of Typhoon Rainfall in Yunnan
摘要: 2012~2021年进入关键区影响云南的台风研究表明：进入影响关键区的台风在消亡前24小时其外围激发的强对流区域局地会出现明显大风天气。云南台风降水影响主要集中在7~8月，其中进入II区的台风造成影响较重，进入III区的影响出现严重次数最多，进入I区的以一般影响为主。MJO所处位相和强度对云南强降雨只起到补充增强作用。台风对云南降雨的影响除与台风登陆和消亡位置有关外，副高是台风造成云南强降雨的最主要因素，冷空气配合是台风造成云南强降雨的重要因素。
Abstract: The results of statistical from 2012 to 2021 analysis show that the strong convective area triggered by the typhoon entering Yunnan will locally have obvious gale weather 24 hours before its demise. The rainfall of typhoon-induced in Yunnan was mainly concentrated in July and August. The typhoon in Region II caused more severe impacts, the typhoon in Region III caused the most severe impacts, and the typhoon in Region I mainly caused general impacts. The phase and intensity of MJO can only supplement and enhance the heavy rainfall in Yunnan. The influence of typhoons on rainfall in Yunnan is related to the position of typhoon landing and extinction. Subtropical high is the most important factor in typhoons causing heavy rainfall in Yunnan, and cold air coordination is the important factor in typhoons causing heavy rainfall in Yunnan.
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