“2013.03.19”冰雹飑线天气过程分析  

Analysis on a Strong Hail Squall Line Process Happened on March 19^(th),2013

作　　者：张晶晶 

机构地区：[1]九江市气象局,江西九江332000

出　　处：《江西科学》2016年第4期451-456,共6页Jiangxi Science

基　　金：2012年公益性行业(气象)科研专项(GYHY201206004);中国气象局气象关键技术集成与应用项目(CMAGJ2013M74);中国气象局预报员专项项目(CMAYBY2015-039);中国气象科学研究院灾害天气国家重点实验室2012年开放课题(2012LASW-B01);2012年开放课题南京雷达气象与强天气开放实验室2012年研究基金项目(BJG201205);江西省气象局预报员专项"两次台风暴雨过程中尺度特征对比分析"

摘　　要：利用常规气象探测资料和多普勒天气雷达产品,对2013年3月19日在江西发生的一次强冰雹天气过程从天气形势、雷达回波演变特征等几个方面进行了综合分析。结果表明:本次飑线天气过程是在江西省典型天气形势背景下发生的,深厚的高空低槽、低层切变、地面处江南倒槽中。本次天气过程前,水汽条件充足,储备了大量的不稳定能量;这次冰雹天气出现在对流不稳定层结条件下,0℃层和-20℃层的高度适宜。多普勒雷达能很好地监测冰雹天气的发生发展演变过程,大于60 d BZ强回波区和悬垂结构及逆风区的出现,垂直累积液态含水量(VIL)增加等都对冰雹天气的出现具有指示意义。In this paper,the hail process on the March 19,2013 in Jangxi was analyzed through analyzing of weather situation,evolution characteristics of the radar echo by use of the routine meteorological data and Doppler weather radar. The results are as follows： the squall line appeared under the background of typical weather situation with deep upper low pressure trough,low-rise shear,and the ground in jiangnan inverted trough1; Before the process,the unstable energy was reserved by abundant water vapor; the occurrence of the hail weather was under the conditions of convectively unstable stratification,and suitable height of 0 ℃ and 20 ℃ layers. The Doppler radar has good capacity to monitor the occurrence,development and evolution of hail weather. The echo area over 60 d BZ,overhanging stricture and wind area,and increases of vertically integrated liquid water content（ VIL） has the indicative meaning for the occurrence of hail,which also plays the application role for prevention from hail disaster in the future.

关 键 词：江西 飑线 冰雹 风切变 多普勒天气雷达 

分 类 号：S42[农业科学—植物保护]