Study on the Scope of Small Amplitude of Cloud-to-ground Lightning in Lightning Weather Monitoring

• 作者: Luan Jian Nie Yang Tan Wei Wang Peng Wang Xing Wang Yue
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 闪电定位 监测范围 MATLAB数学软件 天气 雷电 振幅 重庆地区 对数正态分布
• 年，卷（期）: 2014,（3）
• 页码范围: 7-10
• 页数: 4页
• 分类号: P427.32

摘要

Based on lightning location data in Chongqing region during 1999-2008,the frequency of lightning in various amplitude ranges and its annual variations were analyzed firstly.Afterwards,with the aid of matlab mathematical software,the distribution of the lightning location data was fitted using logarithmic normal distribution function.The results showed that after data of cloud-to-ground lightning with current amplitude from-5 to5 kA were deleted from lightning location data,the statistical characteristics of cloud-to-ground lightning could be reflected well.Meanwhile,lightning with current amplitude from-5 to 5 kA accounted for 1.05%(less than 2%),which accorded with the detection principle of lightning position indicator(there existed error detection).Therefore,cloud-to-ground lightning with current amplitude of-5-5 kA in lightning location data of Chongqing region was defined as small amplitude of cloud-to-ground lightning,which could provide scientific references for the processing of lightning location data in Chongqing region as well as analysis and quality control of lightning location data in other regions.