Profound interdecadal variability of the summer precipitation over the upper reaches of the Yangtze River Basin

Author:

Deng Mengyu12ORCID,Li Chaofan34ORCID,Lu Riyu45,Dunstone Nick J.6ORCID,Bett Philip E.6,Xiao Miaoyuan7

Affiliation:

1. Sichuan Provincial Meteorological Observatory Chengdu China

2. Heavy Rain and Drought‐Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province Chengdu China

3. Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences Beijing China

4. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences Beijing China

5. College of Earth and Planetary Sciences, University of the Chinese Academy of Sciences Beijing China

6. Met Office Hadley Centre Exeter UK

7. Engineering Design & Research Institute of Sichuan University Chengdu China

Abstract

AbstractThe upper reaches of the Yangtze River Basin (UYRB) are famous for their hydropower generation and water resources in China, relying greatly on precipitation. The UYRB summer precipitation has decreased since the early 2000s and has been exposed to a particularly dry period in the most recent two decades. By analyzing the long‐term variability from the beginning of the 20th Century, we found that the precipitation exhibits a profound periodic interdecadal variation, with a significant cycle of 30–50 years. The interdecadal variability of precipitation is shown to be significantly modulated by both the Atlantic Multidecadal Oscillation (AMO) and Pacific Decadal Oscillation (PDO), exerting their impact through related circulation anomalies. Moreover, the periodical nature of the UYRB precipitation variation and its correlation with AMO/PDO suggest that the UYRB might enter a wet period in the forthcoming decade, i.e. rich in hydroelectric resources but a high risk of flood.

Funder

National Natural Science Foundation of China

Publisher

Wiley

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3