四川省云地闪和三维闪电监测系统对比分析  

Comparative Analysis of Cloud-ground Lightning and Three-dimensional Lightning Monitoring System in Sichuan Province

作　　者：卜俊伟 张琨 PU Junwei(Sichuan Provincial Lightning Protection Centre,Sichuan Chengdu 610072)

机构地区：[1]四川省防雷中心,四川成都610072 [2]高原与盆地暴雨旱滂灾害四川省重点实验室,四川成都610072

出　　处：《农业灾害研究》2022年第1期81-83,共3页Journal of Agricultural Catastrophology

基　　金：高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金项目“基于ADTD闪电资料的三维闪电探测网络探测效率研究”(SCQXKJQN2020053)。

摘　　要：采用四川云地闪和三维闪电监测系统监测的2020年闪电资料,研究了闪电时空分布特征,并评估三维闪电定位系统探测效能。结果表明:(1)2套系统的地闪频次存在明显的日变化和月变化,集中分布于6—9月的傍晚至凌晨,三维闪电监测系统监测地闪数明显高于云地闪系统,三维闪电系统的数据量是云地闪观测系统的2倍多;(2)2套系统监测到的地闪密度也存在较大差异,云地闪观测系统的高值区在内江市、泸州市和宜宾市等地区,三维闪电监测系统主要集中在凉山州、攀枝花、雅安市、眉山市、内江市、自贡市、宜宾市、泸州市和资阳市等地区。由对比可知,三维闪电监测系统的探测效能明显优于云地闪系统。Based on the lightning data monitored by sichuan Cloud-ground lightning and three-dimensional lightning monitoring system in 2020,the spatial and temporal distribution characteristics of lightning were studied,and the detection efficiency of threedimensional lightning positioning system was evaluated.There were significantly diurnal and monthly variations in the ground lightning frequency of the two systems,which were mainly distributed from the evening to the early morning from June to September.The ground lightning frequency of the threedimensional lightning monitoring system was significantly higher than that of the cloudground lightning monitoring system,and the data amount of the three-dimensional lightning monitoring system was more than two times that of the cloud-ground lightning monitoring system.There was also a big difference in the ground lightning density monitored by the two systems.The high value area of the cloud-ground lightning observation system was in Neijiang,Luzhou and Yibin,and the maintenance lightning monitoring system was mainly concentrated in Liangshan,Panzhihua,Ya’an,Meishan,Neijiang,Zigong,Yibin,Luzhou and Ziyang.It could be seen from the comparison that the detection efficiency of three-dimensional lightning monitoring system was obviously better than that of cloud-ground lightning monitoring system.

关 键 词：三维闪电 云地闪 对比 

分 类 号：S761.5[农业科学—森林保护学]