2015年广西深秋特涝气候背景分析

Analysis of autumn floods climate background in Guangxi

利用综合观测、2.5°×2.5°NCEP再分析资料研究了导致广西2015年11月特涝的大尺度环流背景以及暴雨特征。月平均高度分析显示2015年11月副热带高压偏强偏西,华南呈东高西低的高度配置,广西低层主要为低值系统控制。逐日V分量分析2015年11月三暴雨过程,发现具有夏季风涌特征。

Using the conventiona1observation data,2.5°×2.5°NCEP reanalysis data,Large-Scale synoptic weather background,and rainstorm characters which led the floods of in November2015were analysised.The monthly average height displaied the subtropical High strong and extrending westerly,showing East High and west low height configuration in south China,lot of low systems controling Guangxi in November2015.The analysis of three rainstorms in Number2015basing the daily V component showe summer monsoon surge characteristics.