宜州近50年雷暴气候特征分析策  

Climatic Characteristics of Thunderstorms in Yizhou in Recent 50 Years

作　　者：廖家旺 韦瑞霞 LIAO Jia-wang(Meteorological Bureau of Yizhou District,Hechi,Guangxi 546300)

机构地区：[1]广西河池市宜州区气象局,广西河池546300

出　　处：《农业灾害研究》2021年第5期37-38,共2页Journal of Agricultural Catastrophology

摘　　要：利用宜州国家气象观测站1964—2013年雷暴观测资料,采用线性分析、滑动平均、累积距平等方法,分析宜州雷暴日数年际、季、月变化和初终日等特征。结果表明:宜州雷暴日数有下降趋势,下降倾向率为-2.53 d/10 a,峰值与峰谷相差54 d;雷暴日数春、冬季变化较明显,夏、秋季次之;月雷暴日数呈单峰型,雷暴集中在4—8月,8月雷暴最多,12月最少;雷暴初日趋于推迟,终日无显著变化趋势。Based on the thunderstorm observation data of Yizhou national meteorological observation station from 1964 to 2013,using linear analysis,moving average and cumulative distance equality methods,the characteristics of thunderstorm days such as interannual,seasonal,monthly variation and initial and final days in Yizhou were analyzed.The results show that:the number of thunderstorm days in Yizhou has a downward trend,the downward trend rate is-2.53 d/10 a,and the difference between peak and valley is 54 d;The number of thunderstorm days changed obviously in spring and winter,followed by summer and autumn;The monthly thunderstorm days are unimodal.Thunderstorms are concentrated from April to August,with the most thunderstorms in August and the least in December;The first day of thunderstorm tends to delay,and the last day has no significant trend change.

关 键 词：雷暴天气 气候 特征分析 

分 类 号：P446[天文地球—大气科学及气象学]