一次飑线引发的强对流暴雨过程分析  

Analysis of a Squall Line Causing the Strong Convection Heavy Rainfall

作　　者：王宝利[1] 

机构地区：[1]天津长芦汉沽盐场有限责任公司气象台,天津汉沽300480

出　　处：《盐业与化工》2014年第3期40-45,共6页Jounral of Salt and Chemical Industry

摘　　要：文章利用地面常规、自动气象站、NCEP再分析、多普勒雷达探测等资料,对2008-08-12,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:该过程是在高空槽和副热带高压边缘的暖湿气流共同作用下产生的。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 Hangu, the eastern of Tianjin city on August 12th, 2008 based on conventional meteoro- logical data, automatic weather station data, NCEP reanalysis data and Doppler radar data. The re- sults showed that the weather process was caused by the cold air and warm - wet air of subtropical. In the hot and humid environment, the invasion of low - level cold air is the trigger 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 con- vective cells and squall line during its moving to the southeast.

关 键 词：飑线 地面大风 辐合线 垂直风切变 

分 类 号：TS314[轻工技术与工程]