Synergistic Interdecadal Evolution of Precipitation over Eastern China and the Pacific Decadal Oscillation during 1951–2015

IOCAS-IR

	Synergistic Interdecadal Evolution of Precipitation over Eastern China and the Pacific Decadal Oscillation during 1951–2015
	Minmin WU; Rong-Hua ZHANG; Junya HU ; Hai ZHI
发表期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
	2023-12-15
出版年	2024
卷号	v.41 期号:01 页码:55-74
文献类型	CNKI期刊论文
摘要	By using the multi-taper method(MTM) of singular value decomposition(SVD), this study investigates the interdecadal evolution(10-to 30-year cycle) of precipitation over eastern China from 1951 to 2015 and its relationship with the North Pacific sea surface temperature(SST). Two significant interdecadal signals, one with an 11-year cycle and the other with a 23-year cycle, are identified in both the precipitation and SST fields. Results show that the North Pacific SST forcing modulates the precipitation distribution over China through the effects of the Pacific Decadal Oscillation(PDO)-related anomalous Aleutian low on the western Pacific subtropical high(WPSH) and Mongolia high(MH). During the development stage of the PDO cold phase associated with the 11-year cycle, a weakened WPSH and MH increased the precipitation over the Yangtze River Basin, whereas an intensified WPSH and MH caused the enhanced rain band to move northward to North China during the decay stage. During the development stage of the PDO cold phase associated with the23-year cycle, a weakened WPSH and MH increased the precipitation over North China, whereas an intensified WPSH and the weakened MH increased the precipitation over South China during the decay stage. The 11-year and 23-year variabilities contribute differently to the precipitation variations in the different regions of China, as seen in the 1998flooding case. The 11-year cycle mainly accounts for precipitation increases over the Yangtze River Basin, while the 23-year cycle is responsible for the precipitation increase over Northeast China. These results have important implications for understanding how the PDO modulates the precipitation distribution over China, helping to improve interdecadal climate prediction.
关键词	MTM-SVD PDO SST anomalies interdecadal variability precipitation over China
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;A010;
CNKI专题名称	气象学;海洋学;
分类号	P426.6;P732
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	supported by the National Natural Science Foundation of China (Grant No. 42030410) ; Laoshan Laboratory (No. LSKJ202202403-2) ; the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB40000000) ; the Startup Foundation for Introducing Talent of NUIST
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186936
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.SchoolofMarineSciences,NanjingUniversityofInformationScienceandTechnology 4.LaosanLaboratory 5.SchoolofAtmosphericSciences,NanjingUniversityofInformationScienceandTechnology
推荐引用方式 GB/T 7714	Minmin WU,Rong-Hua ZHANG,Junya HU,等. Synergistic Interdecadal Evolution of Precipitation over Eastern China and the Pacific Decadal Oscillation during 1951–2015. 2023.