摘要
干旱从古至今都是人类面临的主要自然灾害,即使在科技发达的今天,它造成的灾难性后果仍然比比皆是。利用不同时间尺度的标准化降水蒸散指数(SPEI)、Mann-Kendall检验、交叉小波分析等方法,分析了河南省1970-2019年干旱演变特征及其与环流的相关性。结果表明:基于SPEI值,近50年来河南省气候逐渐变得干旱;空间变化上,年及春、夏、冬季节都表现为西北干旱显著,东南相对湿润。从环流相关性来看,北大西洋涛动(NAO)、北极涛动(AO)、南方涛动(SOI)对河南省春、夏、秋三季干旱有着较强相关性,SOI和太平洋十年涛动(PDO)在年际上与河南省干旱表现出较强的相关性。
Drought has been a major natural disaster for mankind since ancient times. Even today,with the development of science and technology,the disastrous consequences caused by droughts are still everywhere. In this paper,the evolution characteristics of the drought and its correlation with circulation in Henan Province from 1970 to 2019 are analyzed by using the methods of standardized precipitation evapotranspiration index(SPEI),Mann Kendall test and cross wavelet analysis. The results show that based on SPEI value,the climate in Henan Province has gradually become arid in recent 50 years. In terms of spatial variation,the drought in spring,summer and winter is significant in the northwest and relatively humid in the southeast. From the circulation correlation,the North Atlantic Oscillation(NAO),Arctic Oscillation(AO)and Southern Oscillation(SOI)have a strong correlation with droughts in spring,summer and autumn in Henan Province,and the Pacific Decadal Oscillation(PDO)and SOI have a strong inter-annual correlation with droughts in Henan Province.
作者
路金强
甘容
杨峰
左其亭
LU Jin-qiang;GAN Rong;YANG Feng;ZUO Qi-ting(School of Water Conservancy Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;Key Laboratory of Ground-water Pollution Control and Remediation of Henan Province,Zhengzhou 450001,China;Chushandian Reservoir Construction Adminis-tration Bureau of Henan Province,Xinyang 464043,Henan Province,China)
出处
《中国农村水利水电》
北大核心
2022年第4期17-24,共8页
China Rural Water and Hydropower
基金
河南省水利科技攻关计划项目(GG202026)
国家自然科学基金(51509222,U1803241)。
