2021年8月8日垫江县一次大暴雨天气过程分析

Analysis of a heavy rainstorm weather process in Dianjiang county on August 8, 2021

本文利用常规气象观测资料、NCEP再分析资料等相关气象资料对2021年8月8日垫江县一次大暴雨天气过程进行分析。结果表明:此次垫江县大暴雨天气是在高空槽东移南下、台风“卢碧”、高低空急流、高空辐散的耦合及低空西南涡的共同作用下产生的,这些影响为本次垫江县大暴雨天气的发生提供了有利的大尺度环流背景形势。

This paper analyzes a heavy rainstorm weather process in Dianjiang County on August 8,2021 by using conventional meteorological observation data,NCEP reanalysis data and other relevant meteorological data.The results show that the heavy rainstorm in Dianjiang County was caused by the coupling of a high-level trough moving eastward and southward,Typhoon"Lupit",high and low-level jets,and high-altitude divergence,as well as the joint action of a low-level southwest vortex.These factors provided a favorable large-scale circulation background for the occurrence of the heavy rainstorm.