闪电定位资料与目测雷暴日的对比分析  

Comparative analysis of lightning location data and observed thunderstorm days

作　　者：钟颖颖[1] 冯民学[1,2] 周曾奎[3] 王锡中[2] 张艳华[2] 

机构地区：[1]南京信息工程大学大气物理学院,南京210044 [2]江苏省防雷中心,南京210008 [3]江苏省气象科学研究所,南京210008

出　　处：《气象科学》2010年第6期851-855,共5页Journal of the Meteorological Sciences

基　　金：江苏省科技支撑计划(社会发展)项目(BE2009693)

摘　　要：对比分析了2006—2008年4—8月江苏省气象局闪电定位系统数据和6个地面观测站雷暴数据,通过计算测站有雷暴记录同时闪电探测网有闪电记录的比例和有地闪记录同时有雷暴记录的比例,得出两种观测数据的一致性较好;同时以目测资料为准,借助雷达数据判别分析了闪电定位系统的漏测率和误测率,表明省气象局闪电定位系统探测数据有效。江苏省水体分布广泛,南北地形差异较大,闪电分布也不同,本文针对不同地形地貌利用两种观测数据计算了适用于各个地区的地闪密度公式。Comparative analysis is given between lightning location data and thunderstorm days recorded by 6 surface observation posts of Jiangsu Province from April to August of 2006—2008.We calculate the fraction of observer reported thunderstorms that were also recorded by the lighting network and the fraction of network reported thunderstorms that were also recorded at the station,the results indicate a good agreement between these two kinds of data.According to the observations,in this paper,the undetected lightning rate and incorrect detection rate of lightning positioning system of the Jiangsu Meteorological Bureau have also been analyzed.The results show that the lightning location data are true.Jiangsu covers a large area of water,its landform differs a lot from north to south,along with these differences,this paper gives different formulas to calculate CG lightning density in diverse areas.

关 键 词：闪电定位 雷暴日 地闪密度探测效率 

分 类 号：P427.3[天文地球—大气科学及气象学]