沙漠与绿洲气象2025，Vol.19Issue(2)：47-54,8.DOI:10.12057/j.issn.1002-0799.2302.27001
河南区域暴雨时空分布特征
Temporal-spatial Distribution Characteristics of Rainstorms in Henan Province
摘要
Abstract
Using daily precipitation data in Henan from 1970 to 2021,this study employed mathematical statistics,linear trend analysis and cluster analysis to assess and classify the temporal evolution characteristics of regional rainstorm days and the spatial distribution of rainstorm regions in Henan.The results show that a total of 650 regional rainstorm days occurred in Henan over the 52-year period,with an annual average of 12.5 days.The highest frequency of rainstorms was recorded in summer with 484 days,accounting for 74.5%of the total,while no regional rainstorms were recorded in winter.There was no significant trend of change in the total time series and the sub-series before and after the mean mutation point of regional rainstorm days,rainstorm intensity,first occurrence day,and last occurrence day.From 2008 to 2021,the average first occurrence day of regional rainstorms significantly advanced,while the last occurrence day was noticeably delayed.The rainstorm falling regions can be categorized into four types:northern Henan,central Henan,southern Henan and whole Henan.The average number of regional rainstorm days,the rainstorm intensity,and low-value centers of extreme rainfall were mainly located in the mountainous areas of western Henan,while high-value centers were concentrated in Zhumadian.The intensity of regional rainstorms was greater than that of non-regional rainstorms at most meteorological stations.During regional rainstorms,the longest duration of rainstorms at each station primarily spanned between 2-3 days.关键词
区域暴雨/落区分型/时空特征Key words
regional rainstorm/falling region classification/temporal-spatial characteristics分类
大气科学引用本文复制引用
谷秀杰,郝晓珍,田金华,苏艳华,董俊玲,武文博..河南区域暴雨时空分布特征[J].沙漠与绿洲气象,2025,19(2):47-54,8.基金项目
中国气象局创新发展专项(CXFZ2022J014) （CXFZ2022J014）
河南省气象局预报员专项(KY202108) （KY202108）
河南省科技研发计划联合基金(应用攻关类)项目(242103810095) （应用攻关类）
河南省科技研发计划联合基金(应用攻关类)项目(232103810097) （应用攻关类）
