灾害学2016，Vol.31Issue(4)：82-87,6.DOI:10.3969/j.issn.1000-811X.2016.04.015
“威马逊”台前飑线天气背景成因和雷达预警方法
The Synoptic Causes and Radar Warning Methods of“Rammasun”pre-TC Squall Line
摘要
Abstract
The synoptic causes and radar features were analyzed by using conventional meteorological observa-tions and Doppler radar data.The results showed that the stratification was unstable in south China.Mid-level dry air and strong vertical wind shear were the main causes of pre-TC squall line,were also the reasons that more thun-derstorm gale happened in southeast Guangxi.“Rammasun”pre-TC squall line included three short bow echoes. The eastern bow echo showed the typical features of thunderstorm gale in Doppler radar.Taking spatial applicability and time advance as the measurement,descending of reflectivity core was the most practical and optimal feature for thunderstorm gale warning,followed by mid-altitude radial convergence and surface divergence.关键词
台风/台前飑线/天气背景成因/多普勒雷达/雷暴大风/回波特征Key words
typhoon/pre-TC Squall Line/synoptic cause/Doppler Radar/Thunderstorm Gale/Echo Fea-ture分类
资源环境引用本文复制引用
梁维亮,黄荣..“威马逊”台前飑线天气背景成因和雷达预警方法[J].灾害学,2016,31(4):82-87,6.基金项目
广西自然科学基金项目（2014GXNSFAA118290，2014GXNSFAA118295，2014GXNSFAA118299）；中国气象局预报预测核心业务发展专项 （）
