摘要
本文利用凉山地区2014~2015年雷电实况观测资料和地面电场资料,采用电场强度阈值预警和电场极性跳变预警两种方法对地面电场预警雷电天气的有效性进行了分析,并综合这两种方法,选取电场强度E和电场变化率△E两个参数,分雨季、非雨季(包括干季和过渡季节)确定了预警阈值,并检验了预警有效性。结果表明:(1)不同季节的雷电天气地面电场预警阈值不同。(2)综合运用E和△E的预警阈值这两个参数进行雷电天气预警,可小幅度提高其预警有效性。
In this paper, based on the data of surface electric field in Liangshan Prefecture from 2014 to 2015,using threshold early warning method of electric field and polar jump warning method of electric field to analysis the effectiveness of lightning warning. Combining the two methods,we choose two parameters of electric field intensity E and electric field rate △E to determination threshold in rainy season and non-rainy season and test the effectiveness of early warning. The results show that the warning threshold of ground electric field is different in different seasons and combining the warning threshold of E and △E can increase the warning effectiveness a little.
作者
章尔震
张红梅
刘伟
徐诚
陈学东
ZHANG Erzheng;ZHANG Hongmei;LIU Wei;XU Cheng;CHEN Xuedong(SichuanMeteorological Bureau,Chengdu 610072,China;Bazhong Meteorological Bureau,Bazhong 636000,China;Satellite Launch Center of Xichang,Xichang 615000,China;Sichuan Meteorological Bureau,Chengdu 610072,China;Longchang Meteorological Bureau,Longchang 642150,China)
出处
《高原山地气象研究》
2019年第1期87-90,95,共5页
Plateau and Mountain Meteorology Research
基金
2019年气象软科学重点项目“问责背景下气象防灾减灾救灾适应性研究”(2019ZDIANXM18)
关键词
凉山
雷电
预警方法
Liangshan
lightning
warning method
