气候变化领域集成服务门户(CCPortal): Relative contributions of global warming, AMO and IPO to the land precipitation variabilities since 1930s

CCPortal

DOI	10.1007/s00382-020-05584-w
	Relative contributions of global warming, AMO and IPO to the land precipitation variabilities since 1930s
	Tao L.; Liang X.S.; Cai L.; Zhao J.; Zhang M.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-07-08
英文摘要	The relative contributions of ocean modes to the JJA and DJF land precipitation variabilities during 1934–2015 are investigated using a variety of statistical and dynamical system methods, i.e., singular value decomposition (SVD), multivariate linear regression, and information flow analysis. Through SVD analysis for the tropical land precipitation and sea surface temperature (SST), three ocean modes are found to most affect the trend and interdecadal variation of the land precipitation. They are the global warming (GW) mode, Atlantic Multidecadal Oscillation (AMO) and Interdecadal Pacific Oscillation (IPO). GW contributes dominantly to the tropical land rainfall variability in both the JJA and DJF seasons. In JJA (DJF), AMO (IPO) plays a role only secondary to GW. Locally, within the thin latitude bands 10° S–10° N, 50° N–60° N and 40° S–50° S, GW, AMO and IPO are of equal importance in JJA; outside these bands, in the same season the first two dominate. In the band 10° N–40° N, IPO is the primary contributor in DJF, but outside it, GW dominates. Also, these contributions differ geographically from continent to continent. These results have been substantiated in the application of information flow analysis, a recently developed method in physics for the inference of causality between dynamical events. In terms of information flow, we have presented the regions of sensitivity to the three modes. Also presented are a number of ECHAM model experiments, which, besides verifying the above results, show for the first time that the Indian Ocean is pivotal in having AMO and IPO in effect in causing the precipitation variabilities. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
英文关键词	Atlantic multidecadal oscillation; Global warming; Interdecadal pacific oscillation; Land precipitation; relative contribution
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183341
作者单位	School of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China; Key Laboratory of Meteorological Disaster, Ministry of Education (KLME), Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China; School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China; Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 790-784, South Korea
推荐引用方式 GB/T 7714	Tao L.,Liang X.S.,Cai L.,et al. Relative contributions of global warming, AMO and IPO to the land precipitation variabilities since 1930s[J],2021,56(2021-07-08).
APA	Tao L.,Liang X.S.,Cai L.,Zhao J.,&Zhang M..(2021).Relative contributions of global warming, AMO and IPO to the land precipitation variabilities since 1930s.Climate Dynamics,56(2021-07-08).
MLA	Tao L.,et al."Relative contributions of global warming, AMO and IPO to the land precipitation variabilities since 1930s".Climate Dynamics 56.2021-07-08(2021).