呼和浩特市雷击大地密度取值方法分析

Analysis on the Evaluation Density Methods of Lightning Strikes to Ground in Hohhot

雷暴日是雷电防护研究和服务的重要参考指标,在防雷规范提出的雷击大地密度计算中,雷暴日更是重中之重。随着自动气象站的建设,呼和浩特市已逐步停止了人工观测雷暴数据业务,取而代之的是闪电定位系统来记录雷暴发生时闪电的时间、地点和幅值等要素。相比人工记录雷暴数据,闪电定位系统的数据更加详实、准确,所以现在我们已经有条件按照规范所提及的地闪分布图来计算雷击大地密度。文章结合2013年以前的人工观测雷暴数据对比分析2013—2017年闪电定位系统数据,希望能得出适合呼和浩特市雷击大地密度的取值方法。

Thunderstorm Day is an important reference for lightning protection research and service. More than that, Thunderstorm Day is the most important in the evaluation density methods of lightning strikes to ground which is proposed by the lightning protection specification. With the construction of automatic meteorological stations, Hohhot has gradually stopped the manual observation of thunderstorm data. Instead, the lightning location system records elements such as the time, place, and amplitude of the lightning when a thunderstorm occurs. Compared to the manual recording of thunderstorm data, the data of the lightning location system is more detailed and accurate. So now, we have the conditions to calculate the density of lightning strikes to ground according to the lightning distribution fgure in the specifcation. Based on the comparison and analysis of the manual observation thunderstorm data before 2013 and the data of lightning location system in 2013一2017, this paper hopes to obtain the value methods suitable for the density of lightning strikes to ground in Hohhot.