2019年7月1日南宁机场对流天气过程分析

文章使用ECMWF的ERA5再分析资料及南宁吴圩机场自动观测系统数据对2019年7月1日一次对流天气过程进行分析,结果表明:副高西伸、南海热带低压发展、倒槽西移是导致此次南宁机场及航空管制区出现对流性天气的主要原因,水汽辐合为南宁机场长时间的降水以及湿对流提供了有利的水汽及动力条件,此外,短时强降水会导致能见度降低,人工观测时可通过能见度变化情况判断降水强度。

Using ECMWF's ERA5 reanalysis data and the automatic observation data of Nanning Wuxu International Airport,a convective weather process on July 1,2019 was analyzed.The results show that the west extension of the subtropical high,the development of the tropical depression in the South China Sea,and the westward shift of the trough are the main reasons for the convective weather.Water vapor convergence provides favorable water vapor and power conditions for long-term precipitation and wet convection in Nanning Wuxu International Airport.In addition,short-term heavy precipitation will lead to reduced visibility,and the precipitation intensity can be judged by the change of visibility.