气象2016，Vol.42Issue(5)：578-588,11.DOI:10.7519/j.issn.1000-0526.2016.05.007
2013年7月冀中特大暴雨的中尺度系统特征和环境条件分析
Diagnostic Analysis of Mesoscale System and Environmental Conditions During Hebei Severe Rainstorm
摘要
Abstract
The severe rainstorm process which occurred in the central part of Hebei on 1 July 2013 was ana-lyzed by using the conventional sounding data,NCEP reanalysis data,automatic stations data,FY-2E sat-ellite data and radar data.The results show that:(1 )The rainstorm can be divided into warm sector rain-storm and cold shear rainstorm.During the process of warm sector rainstorm,low-level moisture flux con-vergence was dramatically enhanced.(2 )Strong ageostrophic-wet-Q vector convergence took place before the warm sector rainstorm,and it has good performance in forecasting the warm sector rainstorm.Large value area of ·Q* only with convective condensation heating in warm sector can be used to indicate the heavy rainfall area.Furthermore,condensation heating plays an important role in ageostrophic-wet-Qvec-tor convergence.(3 )Warm sector rainstorm occurred in the developing stage of warm meso-βscale convec-tive clouds,influenced by the surface mesoscale vortex.Then,cold shear convective clouds incorporated with warm sector convective clouds formed PECS,which worked in with the surface convergence line cau-sing rainstorm again.(4)The radar echoes show that meso-γscale convergence lines in the meso-βscale cyclone flow field creates a favorable dynamic condition for banded strong rainfall echo in Sizhilan Area.关键词
暖区暴雨/非地转湿Q矢量/PECS/带状强降水多单体风暴Key words
warm sector rainstorm/ageostrophic-wet-Qvector/PECS/banded multi-cell rainstorms分类
天文与地球科学引用本文复制引用
孔凡超,赵庆海,李江波..2013年7月冀中特大暴雨的中尺度系统特征和环境条件分析[J].气象,2016,42(5):578-588,11.基金项目
国家自然科学基金项目（41575049）资助 （）
