榕江县近65a雷暴气候统计特征及服务建议

Statistical Characteristics and Service Suggestions of Thunderstorm Climate in Rongjiang County over the Past 65 Years

摘要: 利用榕江县气象观测站1958~2013年逐日雷暴气候观测资料以及2013~2022年逐日雷电预警发布资料和部分雷击灾害，通过数理统计、线性分析，揭示榕江县雷暴气候变化特征。结果表明：榕江县累年出现雷暴日数平均为51.9 d，每月均有可能出现雷暴天气，且多集中在3~8月，以8月最多，7月次之，12月最少；雷暴变化特征有着较好的11~14a振荡周期，且有逐渐减小的趋势变化，雷暴具有明显的季节变化一年四季都有雷暴发生，其中雷暴日数以夏季出现最多；日变化特征主要发生在午后至傍晚和上半夜，这两个时间段最容易发生雷暴天气。

Abstract: Using the daily thunderstorm climate observation data from the Rongjiang County Meteorological Observatory from 1958 to 2013, as well as the daily lightning warning release data from 2013 to 2022 and some lightning disasters, the characteristics of thunderstorm climate change in Rongjiang County are revealed through mathematical statistics and linear analysis. The results show that the average number of thunderstorm days in Rongjiang County over the years is 51.9 days, and thun-derstorm weather may occur every month, mostly concentrated from March to August, with the most in August, followed by July, and the least in December; the characteristics of thunderstorm changes have a good 11~14 year oscillation period and a gradually decreasing trend. Thunder- storms have obvious seasonal changes and occur throughout the year, with the most thunderstorm days occurring in summer; the diurnal variation characteristics mainly occur in the afternoon to evening and the first half of the night, which are the most prone to thunderstorm weather.