近30年济源市暴雨天气特征分析及防灾减灾措施

Analysis of Rainstorm Weather Characteristics and Disaster Prevention and Reduction Measures in Jiyuan City in Recent 30 Years

利用济源市气象部门1981—2020年逐日降水量资料,选用一元线性回归法对暴雨天气特征进行分析,并提出了几点防灾减灾措施。结果表明:1991—2020年济源市年降水量整体呈现增加的趋势,变化倾向率为38.277 mm/10年,增加趋势较为显著,年内降水量具有单峰形变化特征;暴雨日数整体呈现增加的趋势,变化倾向率为0.191 d/10年,增加趋势不显著;济源市年内暴雨天气主要集中在夏季,其次是秋季,春季暴雨天气出现频率较低,冬季没有出现暴雨天气;济源市年平均降水量为586.9 mm,而暴雨天气的平均降水量为93.8 mm,暴雨降水量对年降水量的贡献率达到了16.0%;济源市气象部门需多举措做好暴雨洪涝防灾减灾工作,将其造成的危害降至最低。

Usd the daily precipitation data of Jiyuan City Meteorological Department from 1981 to 2020,the univariate linear regression method was used to analyze the characteristics of rainstorm weather,and several disaster prevention and mitigation measures were put forward.The results show that:from 1991to 2020,the annual precipitation in Jiyuan City showed an overall increasing trend,and the trend rate of change was 38.277 mm/10years.,the change tendency rate was 0.191d/10 years,and the increase trend was not significant;the heavy rain in Jiyuan City was mainly concentrated in summer,followed by autumn,the frequency of heavy rain in spring is low,and there was no heavy rain in winter;the annual average precipitation in Jiyuan City was 586.9 mm,and the average precipitation of rainstorm weather was 93.8 mm,and the contribution rate of rainstorm precipitation to the annual precipitation reached 16.0%;hazards were minimized.