雷电资料在一次强雷暴天气分析中的应用

Application of Lightning Data in Analysis of a Severe Thunderstorm

利用山东省雷电资料配合多普勒雷达多种产品(如基本反射率、径向速度、垂直累积液态含水量等)回波图像及自动站、Micaps资料,采用统计和对比分析的方法,对2008年8月26日青岛地区的雷暴天气过程进行分析,找出闪电活动与雷达强度回波及降水的关系。结果表明,闪电发生频数较雷达回波强度在时间序列上有一定的超前性;在雷达回波发展的不同阶段,闪电发生的位置与雷达强回波位置大多相同,有时偏离;降水回波辐合区,闪电活动相对频繁,这对雷暴等强对流天气过程预警工作有一定的参考价值。

Usirtg the＇ lightning data from Doppler Radar Observations of Shandong Province, together with such products as basic reflectivity, ra- dial velocity, liquid water content of vertically echo image, as well as data from automatic stations and Micaps system, this paper analyzed thun- derstorm process happened in Qingdao by statistics and comparative methods. It found the relationship between the lightning activity and radar echo intensity as well as precipitation. The frequency of lightning temporally precedes radar echo intensity and precipitation mostly, lightning lo- cation and the location of the radar echo are basically the same although there is deviation sometimes at various stages of radar echo development ; in the precipitation echo Convergence Zone, and the lightning activity is relatively frequent. It is expected that these results will provide certain reference for the early warning for thunderstorm and strong convective weather orocess.