安徽农业科学2011，Vol.39Issue(31)：19459-19462,4.
2010年8月晋城一次大暴雨天气过程分析
Analysis of one Heavy Rainstorm in Jincheng in August in 2010
摘要
Abstract
[Objective] One heavy rainstorm in Jincheng in August in 2010 was expounded. [ Method] By dint of the conventional meteorological data, automatic weather station data, and Doppler radar data, and from the aspect of circulation background, physical quantity field, satellite cloud image, and radar echo etc. , one severe torrential rainstorm was analyzed. [Result] The rainstorm was in the circulation field of low-west-east-obstruction, and was formed under the middle and low layer shear line and low air torrent situation. The low layer shear and convergence of wind were favorable to the lift of unsteady air around Jincheng. Hie intrusion of cold air in the low layer of convective layer and a-bove the ground was the main trigger of the generation of such convective weather. The torrent of the low air in the southwest sent abundant water vapor to the rainstorm area. The high temperature and the highly moisture accumulated much unsteady energy for the generation of rainstorm. The main precipitation system of this process was the singular of convective echo which was stimulated by the ground meso-scale shear line. Under the guidance of southwest airstream of the low and middle air, the convective echo singular formed train effect by moving towards Jincheng and formed large rainstorm. Doppler radar data suggested that the characteristics of the generation, development and movement of this meso-scale rainstorm system. The strong precipitation center was in the large value area of the gradient in the back of the TBB low value center. [ Conclusion] The study provided reference for the forecast and pre-warning of temporary rainstorm of such kind.关键词
大暴雨/天气过程/中尺度切变线/对流回波单体/列车效应Key words
Severe torrential rainstorm/ Weather process/ Mesoscale shear/ Convective echoes cell/ Train effect分类
天文与地球科学引用本文复制引用
程海霞,张红霞,张燕,王建民..2010年8月晋城一次大暴雨天气过程分析[J].安徽农业科学,2011,39(31):19459-19462,4.基金项目
国家自然科学基金(40975073). （40975073）
