气象Issue(3)：297-304,8.DOI:10.7519/j.issn.1000-0526.2014.03.005
福建西部山区短时暴雨雷达回波特征及中小尺度系统分析
Analyses on Radar Echo Characteristics and Meso-Microscale Systems of Short-Time Rainfalls in Western Mountainous Area of Fuj ian
摘要
Abstract
Utilizing conventional meteorological data,T-Inp and the Longyan and Jianyang CINRAD/SA data,the radar echo characteristics and meso-microscale systems of short-time rainstorms in western mountainous area of Fujian are analyzed.The results show that the short-time torrential rainfall echoes can be classified for continental convective precipitation and tropical marine precipitation.Besides,the rela-tionship between the convective precipitation,the tropical marine precipitation’s low level reflectivity fac-tor and rainfall intensity are statistically analyzed.The rainfall echoes are classified for local developed stagnation echo and“train effect”echo which constantly affects certain regions according to the impact time of rainfalls.Based on the evolution of radar echoes,base velocities and weather systems,three types of meso-microscale systems which lead to short-time rainstorms are extracted.The first is meso-scale shear line or convergence line related to low-level shear line (trough)and southwest jet.The second is low-level shear line or convergence line which moves to south.The third is adverse wind area or mesocylone related to local convections.关键词
短时暴雨/雷达回波特征/中小尺度系统Key words
short-time rainstorm/radar echo characteristics/meso-microscale systems分类
天文与地球科学引用本文复制引用
冯晋勤,汤达章,曹长尧..福建西部山区短时暴雨雷达回波特征及中小尺度系统分析[J].气象,2014,(3):297-304,8.基金项目
福建山区短时暴雨预报预警技术研究项目（2010J01244）资助 （）
