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投稿时间：2007-04-26 修订日期：2008-02-10
投稿时间：2007-04-26 修订日期：2008-02-10
中文摘要: 为提高强对流天气的预报准确率，对2005年7月31日夜间和2004年6月7日下午衡水地区突发
性强对流天气从影响系统、卫星云图、雷达回波及闪电定位资料特征等方面进行了对比分析
。发现两次天气过程都属于降水天气结束后，又重新发展的强对流天气过程，预报起来具一
定的难度。两次天气过程影响系统不同，造成的天气也不尽相同，“6.07”过程大风天气明
显，且移动速度快，影响时间短，“7.31”过程局地短时暴雨天气明显，系统移动速度慢，
影响时间长。两次天气过程的红外卫星云图特征不同，“6.07”过程的卫星云图呈带状，“
7.31”过程的卫星云图呈团状，具有暴雨云团的特征。两次天气过程中大风和雷达基本反射
率中的弓形回波具有非常好的对应关系。垂直积分液态水含量(VIL)的高值区的长时间影响
与局地暴雨具有很好的对应关系，其值由高到低的骤减，预示着破坏性大风的发生。两次过
程中大风发生前后雷电空间分布均呈扇状分布，对流发展成熟阶段造成雷击灾害的“6.07”
过程中地闪所占比例较大，造成局地暴雨天气的“7.31”过程中云闪所占比例较大。在强对
流天气的预报中，非常规气象资料起着很重要的作用。
Abstract:In order to forecast the severe convection events efficiently，two paroxysmal se
vere convective events occurred on Jun 7, 2004 and on Jul 31, 2005 are analyzed.
The results show that the two weather processes are very difficult to forecast.
The synoptic system and the weather phenomenen are different in the two events.
The movement speed of the former is more rapidly than the latter. The character
s in infrared satellite picture, the Doppler radar echo and lightning site data
are also different. The wind on the ground has close relation to the bow echo on
the map of Doppler radar base reflectivity and the rapid reduce of Doppler rada
r vertical integration liquid water content. The persistent influence of the high value area of VIL are correspo
nding to local heavy rain. The proportion of the cloud flashes in the two weath
er processes is different. The non conventional observation data are very impor
tant to the severe convection events forecast.
keywords: lightning site bow echo local rainstorm mesocyclone vertical integration liquid water content
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引用文本：
王莉萍,崔晓东,王国宁,张国萍,2008.两次突发性强对流天气的对比分析[J].气象,34(8):40-44.
Wang Liping,Cui Xiaodong,Wang Guoning,Zhang Guoping,2008.Contrast Analysis of Two Paroxysmal Severe Convective Events [J].Meteor Mon,34(8):40-44.
王莉萍,崔晓东,王国宁,张国萍,2008.两次突发性强对流天气的对比分析[J].气象,34(8):40-44.
Wang Liping,Cui Xiaodong,Wang Guoning,Zhang Guoping,2008.Contrast Analysis of Two Paroxysmal Severe Convective Events [J].Meteor Mon,34(8):40-44.