利用对地闪的观测估算对流性天气中的降水  

Estimation of Rainfall in Convective Weather System by Using CG Lightning Data

作　　者：周筠珺[1] 郄秀书[1] 王怀斌[1] 王致君[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000

出　　处：《高原气象》2003年第2期168-172,共5页Plateau Meteorology

基　　金：中国科学院知识创新工程项目(KXCX2-201);国家自然科学基金"十五"重点项目(40135010);知识创新领域前沿(210041)项目共同资助

摘　　要：地闪与对流性天气中的降水量之间存在着较好的相关性,本文利用1997年6～8月间在陇东地区以平凉雷电与雹暴实验站为中心对对流性天气过程进行地闪与降水的观测,解决以下三个问题:(1)单个地闪所对应的对流性天气中的降水量;(2)相对于地闪发生位置的对流性降水空间分布;(3)相对于地闪发生时刻的对流性降水时间分布,实现了利用地闪资料更加精确地估算对流性天气中的降水量。There is a better coherence between CG lightning and rainfall in strong convective weather systems. The technique of rainfall estimation is developed by solving the following three major problems: (1)The rainfall lightning rate; (2)The spatial distribution of rainfall relative to the CG lightning location; (3)The temporal distribution of rainfall relative to the CG lightning occurrence. The above three problems have been studied by utilizing data of the thunderstorms taken place in Pingliang area of Gansu that centered with Station of Lightning and Hail Storm Experiments between June to August 1997. We can estimate precipitation in convective weather systems more accurately by using this kind of method now.

关 键 词：地闪 对流性天气 降水量 相关性 空间分布 

分 类 号：P426.615[天文地球—大气科学及气象学]