灾害学Issue(4)：38-42,5.DOI:10.3969/j.issn.1000-811X.2014.04.008
2013年广西春季混合型强对流天气分析
Analysis of Guangxi Mixing Severe Convection Weather in the Spring of 2013
摘要
Abstract
Based on NCEP reanalysis data,MICAPS data and routine observation data,the mixing strong con-vection weather happed in Guangxi in the evening of March 13,2013,is analyzed.The dry wet strong potential in-stability station is caused by the invasion of cold air on the 500hpa,and the strong upward motion which become se-verer under the scattered radiation flow in the right side of the entrance of the 200hpa jet,by which the inadequate lifting mechanisms of high-altitude slot is made up,are triggering conditions of the severe convection weather. Ground frontal is swing in Guangxi while the unstable energy is accumulated under the high temperature in daytime, because of which unstable energy is released when the shear line and the convergence line moving to the south of Guangxi.The configuration of vertical high speed wind in the middle troposphere and the positive helicity in the lower layer is the dynamic condition of the strong wind.The ground cyclonic convergence is strengthening as the strong positive vorticity is passing down,forming the strong Rotating wind,by which the moist and warm air upon the south sea is involving into Wuxi,while a short-time heavy rainfall is happened in the area of 50 meters around the south convergence line.Hail is developing in the moderate intensity station of CAPE generated by the strong vertical wind shear environment,and the dynamic effect of this shear environment makes the updrafts stronger.关键词
混合型/强对流天气/冰雹/短时强降水/春季/广西Key words
mixing/severe convection weather/hail/short-time heavy rainfall/spring/Guangxi分类
天文与地球科学引用本文复制引用
黄莉,詹莹玉,白龙,黄增俊,苏兆达..2013年广西春季混合型强对流天气分析[J].灾害学,2014,(4):38-42,5.基金项目
广西科技厅项目（桂科攻0993002-1）；广西气象局重点科研项目 （）
