近30年抚顺地区雷暴活动特征分析

Analysis on Characteristics of Thunderstorm Activity in Fushun in Recent 30 Years

利用抚顺地区3个国家基本气象站1984~2013年的雷暴资料,从雷暴初终日、日变化、月变化、年际变化、空间分布等方面统计分析抚顺地区雷暴活动特征。结果表明,近30年抚顺地区年平均雷暴日为31.8 d,市区多于东部山区,初雷暴日最早出现于1990年1月17日,以4月份出现次数最多,终雷暴日最晚出现于2004年12月10日,以10月份出现次数为最多,夏季雷暴出现频率最高,一天当中则主要发生于下午时段。

Using thunder storm data in three national stations in Fushun region during 1984 -2013, thunder storm activity characteristics was analyzed from aspects of first day, final day, daily variation, monthly variation, annual variation, spatial distribution. The results showed that in recent 30 years, annual average thunder storm days is 31.8 d, the earliest first thunder storm day appeared on Jan. 17th 1990, the latest final thunder storm day appeared on Dec. 10th, the highest frequency of thunder storms appeared in summer, and mainly concentrated in afternoon winthin a day.