近10年开平市各片区暴雨特征  

Characteristics of Heavy Rain in Every Parts of Kaiping over the Past 10 Years

作　　者：刘俭彤 郑嘉勋 洪佳娜 LIU Jiantong;ZHENG Jiaxun;HONG Jiana(Kaiping Meteorological Service,Kaiping 529300)

机构地区：[1]开平市气象局,广东开平529300

出　　处：《广东气象》2025年第1期26-29,共4页Guangdong Meteorology

基　　金：江门市气象局课题(201812)。

摘　　要：基于开平国家级气象观测站和区域自动站的逐日降水资料,分析开平市各片区的暴雨特征,结果表明:开平市各地区的年暴雨日数和年暴雨量的变化趋势大致相同,其中南部的年暴雨日数和年暴雨量最多,中部地区最少;开平市各片区暴雨日数的月变化呈双峰型分布,峰值出现在5和8月,其中5-10月的暴雨日数占全年的81.3%,说明汛期更容易出现暴雨天气;各站点的初暴日大多集中在3和5月,暴雨终日大多在9和10月,与本地汛期的起止时间基本一致;开平大部分地区的降水量、降水频率和降水强度日峰值出现在午后至傍晚。Based on the daily rainfall data from a national meteorological observation station in Kaiping and a regional network of automatic weather stations,this paper analyzed the characteristics of heavy rain in every parts of Kaiping.The results are shown as follows.The annual number of heavy rain days tended to vary in generally the same tendency as the annual amount of heavy rain across the city,with the southern part having the most number and amount and the central part the least.For all parts of the city,the monthly variations of heavy rain days were bimodal,with the peaks in May and August respectively.Specifically,the number of heavy rain days from May to October took up 81.3%of the yearly total,suggesting that it was more likely for heavy rain weather to take place in the rainy season.For all observation sites of the city,the annually first date of heavy rain concentrated in March and May and the annually last date in September and October,generally consistent with the starting and ending dates of the local rainy season.For most parts of the city,the diurnal peaks of rain amount,frequency and intensity occurred post-midday or in late afternoon and early evening.

关 键 词：气候学 暴雨 开平市 

分 类 号：P46[天文地球—大气科学及气象学]