人民黄河2025，Vol.47Issue(10)：72-78,7.DOI:10.3969/j.issn.1000-1379.2025.10.010
近51a河南省极端降水事件时空演变特征分析
Spatial-Temporal Variation Analysis of Extreme Precipitation Events of Henan Province over the Past 51 Years
摘要
Abstract
In order to understand the current situation of extreme precipitation events in Henan Province,scientifically recognize and master the spatial-temporal evolution characteristics of extreme precipitation events,and provide basic information support for flood and drought dis-aster prevention and extreme precipitation event early warning,based on the precipitation data of 26 meteorological stations near Henan Prov-ince from 1973 to 2023,an extreme precipitation threshold standard was established to screen extreme precipitation events.Meanwhile,in combination with the recommendations of the World Meteorological Organization(WMO),indicators such as extreme precipitation and con-tinuous wet period CWD were selected.The spatial-temporal distribution of extreme precipitation indicators was statistically analyzed by using M-K trend analysis,and the period was studied by using the wavelet function.The results show that in terms of spatial distribution,the ex-treme precipitation threshold and eight extreme precipitation indicators in Henan Province gradually increase from northwest to southeast,but the number of extreme precipitation days and the intensity of extreme precipitation do not have obvious spatial distribution characteristics.During the time series changes,among the 8 extreme precipitation indicators,except for the continuous wet period CWD,the number of heavy rain days R25,and the number of heavy rain days R50,the remaining 5 indicators all show a decreasing trend,but they show an increasing trend after 2000.The extreme precipitation in Henan Province has periodic scale characteristics of 26-31,16-20,and 8-11 years during the study period.关键词
极端降水/时空演变/M-K趋势分析/河南省Key words
extreme precipitation events/spatial-temporal evolution/M-K trend analysis/Henan Province分类
建筑与水利引用本文复制引用
王贻森,闫二磊,张修宇,陈卓..近51a河南省极端降水事件时空演变特征分析[J].人民黄河,2025,47(10):72-78,7.基金项目
河南省科技研发计划联合基金资助项目(232103810102) （232103810102）
水利部黄河流域水治理与水安全重点实验室(筹)研究基金资助项目(2023-SYSJJ-04) （筹）
水利部黄河泥沙重点实验室开放课题基金资助项目(HHNS202005) （HHNS202005）
河南省重大公益科技专项(201300311500) （201300311500）
河南省科技攻关项目(212102311156) （212102311156）
