摘要
利用地面常规、自动气象站、NCEP再分析、多普勒雷达探测等资料，对2008年8月12日，出现在天津东部汉沽地区的由飑线引发的强对流暴雨天气过程进行了综合分析。结果表明，该过程是冷空气与副热带高压边缘的暖湿气流共同作用的结果。在高温高湿的有利条件下，低层弱冷空气的入侵是本次天气过程的触发因素。飑线发生在副热带高压边缘的不稳定区域，飑线云系在向东南方向移动过程中，与暖区内对流单体合并形成的弧形云带是本地雷雨、大风天气的直接制造者。
The strong convection rainstorm which was caused by squall was comprehensively analyzed in eastern Tianjin city, Huangu on August 12, 2008 based on conventional meteorological data, automatic weather station data, NCEP reanalysis data and Doppler radar data. The results showed that the cold air and warm-wet air of subtropical caused the weather process. On the hot and humid environment, the invasion of low-level cold air is the rigger of this weather factors. Squall line occurred in the unstable region of the subtropical edge. The local thunderstorm and windy weather were caused by the curved cloud belt which was formed by the merging of convective cells during the clouds of squall line moving to southeast..
出处
《山西气象》
2011年第4期5-10,共6页
Shanxi Meteorological Quarterly
关键词
飑线
地面大风
辐合线
垂直风切变
Squall line, Surface strong wind, Convergence line, Vertical wind shear.
