副高北侧一次典型强降水过程分析  

Analysis on a typical heavy rain weather process in the north of subtropical high

作　　者：张湘华 彭月 张湘玲 

机构地区：[1]湘西州气象局,湘西416000 [2]长沙市气象局,长沙410205 [3]株洲市气象局,株洲412003

出　　处：《气象水文海洋仪器》2016年第2期35-38,共4页Meteorological,Hydrological and Marine Instruments

基　　金：公益性行业(气象)科研专项(GYHY201306019);"亚洲区域气候模式发展及在气候变化和短期气候预测中的应用"

摘　　要：利用常规气象资料、中小尺度加密站资料和1°×1°fnl再分析资料对发生在2010-06-19的一次大暴雨过程进行分析,结果表明:本次大范围大暴雨过程是多尺度系统影响的结果,稳定的纬向环流和副高的东西向带状分布,影响了天气尺度的系统的发展和移动,有利的天气尺度背景为中小尺度对流系统的形成提供了基本条件,触发了对流不稳定能量释放,导致中低层切边中出现多个中小尺度雨团排列成带状有组织的向东传播,是导致暴雨、大暴雨发生的主要原因。Using conventional meteorological data, small and medium scale encryption station data and 1 × 1° fnl reanalysis data, this paper analyzes a torrential rain process which occurred in June 19,2010. The results show that the large range torrential rain process is the result of the multi-scale system impact. The development and movement of synoptic-scale system are influenced by the stability of zonal circulation and distribution of subtropical high belt. Under the favorable large scale circulation background and excited the activities of the medium and small scale convective systems, it triggered the convective instability energy release, which resulted in more heavy rain belt mesoscale convective cloud cluster and corresponding with the mesoscale rain cluster of organized activities. This is the main reason for the heavy rain occurred.

关 键 词：大暴雨 副高 西南急流 中低层切变 

分 类 号：P426.6[天文地球—大气科学及气象学]