气象2016，Vol.42Issue(6)：716-723,8.DOI:10.7519/j.issn.1000-0526.2016.06.007
一次春季江淮气旋形成发展特征及暴雨诊断分析
Formation and Development Mechanism of One Cyclone Over Changj iang-Huaihe River Basin and Diagnostic Analysis of Rainstorm
摘要
Abstract
The diagnosis analysis for the development mechanism of a cyclone over Changjiang-Huaihe and rainstorm that occurred from 25 to 27 May 2013 was studied utilizing the NCEP/NCAR reanalysis data. The results indicate that positive vorticity advection in upper level,warm air advection in lower level,the divergence located in the right side of the entry of upper j et and convergence located in the left side of the exit of low jet are the most important physical factors for the developing of the cyclone.The development of cyclone is consistent with the mpv1 and mpv2 of moist potential vorticity.Formation and development mechanisms of the cyclone correspond to development of vorticity column troposphere,and the download of positive vorticity advection in upper level intensifies the vortex in lower troposphere.The downward ex-tension of moist potential vorticity could have increased the positive vorticity in the lower level and induced cyclonic circulation.The rainstorm triggered by the cyclone is located in the left front of moving track of the cyclone.Coupling structure of intensity convergence and positive vorticity center enhances the conver-gence of water vapor and energy,which creates the conditions for the maintenance of rainstorm.关键词
江淮气旋/结构特征/湿位涡/暴雨/诊断分析Key words
cyclone over Changjiang-Huaihe River Basin/structure characteristic/moist potential vortici-ty/rainstorm/diagnostic analysis分类
天文与地球科学引用本文复制引用
张晓红,罗静,陈兴,靳莉莉,邱旭敏..一次春季江淮气旋形成发展特征及暴雨诊断分析[J].气象,2016,42(6):716-723,8.基金项目
公益性行业（气象）科研专项（GYHY201006037）资助 （）
