气象与环境学报2026，Vol.42Issue(3)：33-42,10.DOI:10.3969/j.issn.1673-503X.2026.03.004
湖北省分钟级雨强时空分布特征
Analysis of temporal and spatial distribution characteristics of minute-scale rainfall intensity in Hubei Province
摘要
Abstract
Based on the minute-scale rainfall intensity data of 2523 surface automatic observation stations from March to September in Hubei Province from 2019 to 2022,the spatial and temporal distributions of 6-min rainfall intensity,as well as the synoptic systems of the extreme 6-min rainfall intensity were analyzed.The results show that:the provincial average of the maximum 6-min rainfall intensity is 14 mm,and the average 6-min rainfall in the west is lower than that in the east.The 6-min rainfall intensity in southwest of Hubei is quite large with lower fre-quency,while the minute-scale rainfall intensity in eastern Hubei is large and with higher frequency.From March to May,the frequency of rainfall in Jianghan Plain and in southeastern Hubei is high,while in northwestern Hubei it is lower but rainfall is large(more than 12 mm),thus leading to a high risk of disaster.From June to July,the frequency of heavy rainfall is obviously higher and more extensive.The high frequency center of rainfall more than 6 mm is located in northeastern Hubei,which is related to the interaction between the low-level jet during Meiyu and the terrain of Dabie Mountains.From August to September,the rainfall more than 3 mm happens more often in Enshi and Yichang located in the transition zone between plain and mountain,and in eastern Huanggang,located south of the Dabie Mountains.The frequency of 6-min rainfall shows obvious diurnal variations,and the high-fre-quency period occurs from afternoon to midnight,with the peak from 16:00 BT to 18:00 BT.The high frequency period is related to afternoon thermal convection and the nocturnal intensification of the low-level jet.The synoptic systems of maximum 6-min rainfall in each month are divided into three types,with the upper-level trough type oc-cupying more than half,followed by the northwest flow behind the trough type and subtropical high type.Extreme minute-scale precipitation is closely related to the evolution of mesoscale synoptic system.关键词
分钟级雨强/降水频率/极端降水Key words
minute-scale rainfall intensity/Precipitation frequency/Extreme precipitation分类
天文与地球科学引用本文复制引用
刘瑞雪,许冠宇,周金莲,王珊珊..湖北省分钟级雨强时空分布特征[J].气象与环境学报,2026,42(3):33-42,10.基金项目
湖北省自然科学基金气象创新发展联合基金(2022CFD011)、湖北省气象局科技发展基金(2025Q01)共同资助. （2022CFD011）
