潍坊地区一次强冰雹天气成因分析  

Causative Analysis of A Severe Hail Event in Weifang City

作　　者：高晓梅 马守强 王旭 闫凤君 孙丽娟 

机构地区：[1]潍坊市气象局,山东潍坊261011 [2]高密市气象局,山东高密261500 [3]临朐县气象局,山东临朐262600

出　　处：《中国农学通报》2014年第11期245-251,共7页Chinese Agricultural Science Bulletin

基　　金：山东省气象局预报员专项(sdyby2012-07)

摘　　要：为了避免冰雹灾害给社会造成不必要的损失,达到防灾减灾的目的,更好地做好冰雹天气预报,利用常规观测资料、雷达和FY-2E卫星TBB资料,对2012年6月初潍坊市出现的一次典型冰雹天气过程进行了成因分析。结果表明:此次冰雹天气过程发生在东北冷涡和前倾槽的环流背景下,强烈的上升运动为此次天气提供了动力条件,地面中小尺度辐合线是此次冰雹天气的触发机制。适宜的0℃层和-20℃层高度及大的环境风垂直切变有利于雹粒的增长。另外,此次天气发生在对流云团发展最旺盛的时段,位置位于大于232 K的冷云盖移动方向的前端到等温线梯度大值区附近,这对冰雹天气落区的预报有较好的指示意义。In order to avoid the hail disaster causing unnecessary loss to the society and achieve the purpose of disaster prevention and reduction and the hail weather forecast is done accurately, a causative analysis was performed of a typical severe hail event on June 2012 in Weifang City by using the routine observational data, radar and FY-2E TBB data, The result showed that： the severe hail event occurred on the circumfluence background of northeast cohl vortex and forward trough. Violent updraft offered dynamic condition. The surface mesoscale and microscale convergence line triggered the weather. The severe vertical wind shear and an appropriate height about 0℃ layer and- 20℃ layer would be advantageous to the hail augmentation. In addition, the weather occurred in the most vigorous period of convective cloud cluster, the location was from the motion direction front of cold cloud top of exc good indicative effect for the forecast of severe hail eeding event 232 K to the bigness of isotherm gradient, this had a region.

关 键 词：强冰雹 成因分析 中小尺度辐合线 TBB资料 

分 类 号：P458[天文地球—大气科学及气象学]