2020年广西暴雨灾害天气综述与分析

Summary and analysis of Guangxi rainstorm disaster weather in 2020

利用气象及其灾情等资料,对2020年广西区域性暴雨灾害天气过程进行综合分析,并与历史同期的气候作比较,在此基础上对其进行综述。结果表明:(1)年初至春季出现冬春暴雨,比常年偏早、偏强。(2)前汛期5月底到6月上旬出现了破历史记录的暴雨灾害,具有时间长、雨量大、强降雨叠加及灾害重等特点。(3)6月底出现站点破历史记录的全区性暴雨。(4)后汛期影响台风个数偏少,受“海高斯”影响出现全区性暴雨。(5)全年区域性以上暴雨场数比常年少。通过对2020年广西暴雨灾害的综述分析,加深对广西暴雨灾害整体性认识,对今后做好预报业务提供有益参考。

Using meteorological and disaster data,the paper analyzed a regional rainstorm disaster process in Guangxi in 2020,compared it with the climate of the same period in history,and summarized it on this basis.The results showed that(1)winter and spring rainstorms occurred from the beginning of the year to spring,which was earlier and stronger than usual.(2)From the end of May to the beginning of June during the pre-flood season,there was a historically record-breaking rainstorm disaster,which had the characteristics of long time,heavy precipitation,heavy rainfall accumulation and heavy disasters.(3)At the end of June,there was a record-breaking rainstorm in the whole province.(4)The number of typhoons affected in after flood season was less,and the whole province rainstorm appeared under the influence of typhoon Higos.(5)The number of rainstorms above the regional level in the whole year was less than normal.Through the comprehensive analysis of the heavy rain disasters in Guangxi in 2020,the overall understanding of the heavy rain disasters will deepen and it will be a useful reference for forecasting operations in the future.