基于降水距平百分率的秦皇岛市干旱特征
Drought Characteristics of Qinhuangdao City Based on Precipitation Anomaly Percentage
梁静静 1陈耀斌 2陶洁3
作者信息
- 1. 秦皇岛市水利勘测设计有限公司,河北 秦皇岛 066000
- 2. 秦皇岛市汤河河务中心,河北 秦皇岛 066000
- 3. 郑州大学水利与交通学院,河南 郑州 450001
- 折叠
摘要
在气候变化大背景下,研究秦皇岛市降水量变化及干旱特征.在对秦皇岛市1956-2023年68a降水系列分析的基础上,采用降水距平百分率指数研究其干旱特征,并预测其干旱趋势.秦皇岛市降水量分布极不均匀,多年平均降水量为663.7 mm,年降水量极值比为2.95;降水量悬殊导致干旱灾害发生概率较大,68 a中发生不同等级干旱年份共20 a;分年代来看,1970-1979、2020-2023年旱情较轻,1980-2009年旱情严重,其间不仅干旱频率高且多次出现连年干旱.研究可为秦皇岛市干旱灾害防治提供基础.
Abstract
Under the backdrop of climate change,the variation of precipitation and drought characteristics in Qinhuangdao City were investigated.Based on the analysis of a 68-year precipitation series from 1956 to 2023,the precipitation anomaly percentage index was used to examine drought characteristics and predict future drought trends.The spatial and temporal distribution of precipitation in Qinhuangdao City was highly uneven,with an average annual precipitation of 663.7 mm and an extreme precipitation ratio of 2.95.The significant variability in precipitation led to a high probability of drought disasters,with 20 out of the 68 years experiencing droughts of varying severity.By decade,drought conditions were relatively mild during 1970-1979 and 2020-2023,while severe droughts occurred frequently between 1980 and 2009,with a high frequency of droughts and multiple instances of consecutive drought years.This research provides a foundation for drought disaster prevention and mitigation in Qinhuangdao City.
关键词
降水距平百分率/干旱等级/干旱特征/干旱预测Key words
precipitation anomaly percentage/drought severity level/drought characteristic/drought prediction引用本文复制引用
出版年
2025
NETL
NSTL
万方数据