台风“海棠”减弱后影响潍坊的暴雨特征分析

摘要：方法]利用常规天气图、数值预报产品和多普勒雷达资料，目的]对2017年第10号台风“海棠”减弱后的热带低压进行综合分析，主要针对2017年8月2～3日其影响潍坊的一次强对流天气过程进行个例研究，结果]结果表明：(1)此次强对流天气过程主要由台风减弱后的热带低压、冷空气和地面气旋共同影响造成的，系统动力抬升条件好，水汽输送条件好，再加上列车效应导致潍坊多个站点出现暴雨和大暴雨天气；结论]（2）几家数值预报产品对此次过程的天气系统预报差异较大，其中欧洲中心表现较好，对今后的预报有指导意义。

Characteristics of Rainstorm Caused by Weakened Typhoon“Haitang”in Weifang

Using synoptic chart, numerical forecast product and Doppler radar to analyze the weakened tropical depression of typhoon“Haitang”, the author studied the severe convective weather process in Weifang of August 2 to 3, 2017, which was caused by typhoon“Haitang”. The results showed that: (1) this severe convective weather process was mainly caused by the weakened tropical depression of typhoon, cold air and ground cyclone; the good dynamic lifting condition, nice vapor transport condition and train effect caused rainstorm and heavy rainstorm in many sites of Weifang; (2) the severe numerical forecast products had great difference in the prediction of this process, the European Central numerical model showed great performance and could guide future forecast.