气象2011，Vol.37Issue(7)：814-820,7.
一次中纬度飑线的阵风锋发展特征分析
Analysis on the Characteristics of a Mid-Latitude Squall Line
摘要
Abstract
A squall line with two different gust fronts occurred in central Liaoning in August 2009,accompanied by strong convective weather phenomena such as disastrous wind and hail.The developing processes of the two gust fronts were analyzed based on Doppler radar data,radiosonde data,surface meteorological observation data and Aircraft Meteorological Data Acquisition and Relay（AMDAR） data.The results indicate that the strong vertical wind shear in background field intensified the growth of convective cells in the squall line and made its inclining.The westerly cold flow,entering the back of squall line, stimulated the convective activities of the cells and gave birth to the first gust front.The acceleration of westerly surface flow,produced by the great temperature gradient of a northerly cold flow and the warm core of the squall line is the instant cause for the genesis of the second gust front.The line-shaped convergence zone was formed in the major body of the squall line moved to the second gust front,which became a new squall line finally.关键词
飑线/阵风锋/AMDAR/强对流Key words
squall line/gust front/AMDAR（aircraft meteorological data acquisition and relay）/strong convection分类
天文与地球科学引用本文复制引用
袁子鹏,王瀛,崔胜权,陈艳秋,黄阁..一次中纬度飑线的阵风锋发展特征分析[J].气象,2011,37(7):814-820,7.基金项目
公益性行业（气象）科研专项“华北、东北暴雨发生发展特点及预报技术研究” （）
辽宁省气象局科研课题“强对流天气短期客观潜势预报方法研究”共同资助 （）
