华北飑线系统中地闪活动与雷达回波顶高的关系及预警指标

易笑园; 宫全胜; 李培彦; 贾惠珍; 王庆元

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DOI:10.7519/j.issn.1000-0526.2009.2.006

气象:2009,35(2):34-40

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华北飑线系统中地闪活动与雷达回波顶高的关系及预警指标

易笑园^1,2,3, 宫全胜⁴, 李培彦⁵, 贾惠珍², 王庆元²

(1.南京信息工程大学，210044;2.天津市气象台;3.中国气象科学研究院灾害 天气国家重点实验室;4.天津市防雷中心;5.天津气象科学研究所)

Analysis of Correlation Between Cloud to Ground Lightning Activity and Echo Top of Doppler radar Data in Squall Lines in North China

Yi Xiaoyuan^1,2,3, Gong Quansheng⁴, Li Peiyan⁵, Jia Huizhen², Wang Qingyuan²

(1.Nanjing University of Information Science & Technology, 210044;2.Tianjin M eteorological Observatory;3.National Key laboratory of the Severe Weather, Chinese Academy of Meteorological Sciences;4.Tianjin lightning Protection Center;5.Tianjin Meteorological Science Institute)

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本文已被：浏览 1026次下载 2381次
投稿时间：2008-03-23 修订日期：2008-09-28

中文摘要: 选取代表华北地区经常出现的三类飑线系统——拖曳层状型(TS)、先导层状型(LS)、平行层状型(PS)的3次强雷暴过程为研究对象，利用天津塘沽多普勒雷达资料、京津冀ADTD型地闪监测网资料和北京探空资料，在对资料进行全面质量控制的基础上，运用粗网格化分析方法，分别以飑线系统整体和飑线系统上局部的强回波块为研究对象，探讨6分钟内地闪频数与雷达回波顶高的关系，找寻雷电预警指标。结果表明：3次过程中，出现在云顶达到8～12km 对流云塔中的地闪频数分别为85.8%、78.9%和80.5%；无论是在飑线系统整体，还是飑线系统上强回波块中，6分钟内地闪频数与对流云回波顶高高于11km或12km的回波面积有正相关关系；而且在飑线系统内的地闪活跃区，回波顶高高于11km的回波面积对地闪活动激烈程度具有预警意义。

中文关键词: 飑线系统地闪活动回波顶高雷电预警指标

Abstract:3 squall line weather processes in North China were selected and studied, which represent three different types of typical squall line system with trailing stra tiform (TS), leading stratiform (LS) and parallel sratiform (PS). The used data include Doppler radar, cloud to ground lightning, radiosonde and the data by v ariable width net grids. The relationship between cloud to ground lightning f requency every 6 minutes and echo top parameter was studied by using the top hei ght of whole squall line and its upper part. The results show that cloud to gr ound lightning frequency in period of 6 minutes appeared a range above 8km are 8 5.8%, 78.9% and 80.5%, respectively for three squall processes, and they correla te positively to the areas of cloud tower height reaching above 11km or 12km (ec ho top above 11km). Especially, at part intense lightning activity range of squa ll line systems, the total areas of echo top above 11km can be used as an indica tor of lightning warning. These results are meaningful to the lightning now cas ting and to understanding of lightning activity in squall line system in North C hina.

keywords: squall lines CG lightning activity echo top lightning now casting

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基金项目:中国气象局新技术推广项目(GYHY200706042)、预报员专项( CMATG2006Y 06)和天津市气象局2008年科研培育项目共同资助。

作者	单位
易笑园	南京信息工程大学，210044；天津市气象台中国气象科学研究院灾害 天气国家重点实验室
宫全胜	天津市防雷中心
李培彦	天津气象科学研究所
贾惠珍	天津市气象台
王庆元	天津市气象台

Author Name	Affiliation
Yi Xiaoyuan	Nanjing University of Information Science & Technology, 210044 Tianjin M eteorological Observatory National Key laboratory of the Severe Weather, Chinese Academy of Meteorological Sciences
Gong Quansheng	Tianjin lightning Protection Center
Li Peiyan	Tianjin Meteorological Science Institute
Jia Huizhen	Tianjin M eteorological Observatory
Wang Qingyuan	Tianjin M eteorological Observatory

引用文本：
易笑园,宫全胜,李培彦,贾惠珍,王庆元,2009.华北飑线系统中地闪活动与雷达回波顶高的关系及预警指标[J].气象,35(2):34-40.
Yi Xiaoyuan,Gong Quansheng,Li Peiyan,Jia Huizhen,Wang Qingyuan,2009.Analysis of Correlation Between Cloud to Ground Lightning Activity and Echo Top of Doppler radar Data in Squall Lines in North China[J].Meteor Mon,35(2):34-40.