气候变化领域集成服务门户(CCPortal): Examining the impact of multiple climate forcings on simulated Southern Hemisphere climate variability

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DOI	10.1007/s00382-020-05253-y
	Examining the impact of multiple climate forcings on simulated Southern Hemisphere climate variability
	Beraki A.F.; Morioka Y.; Engelbrecht F.A.; Nonaka M.; Thatcher M.; Kobo N.; Behera S.
发表日期	2020
ISSN	0930-7575
起始页码	4775
结束页码	4792
卷号	54
英文摘要	The study examines the influence of external climate forcings, and atmosphere–ocean–sea–ice coupled interaction on the Southern Hemisphere (SH) atmospheric circulation variability. We analysed observed and simulated changes in view of Antarctic sea–ice and Southern Ocean surface temperature trends over recent decades. The experiment embraces both idealised and comprehensive methods that involves an Earth System Model (ESM) prototype. The sensitivity experiment is conducted in a manner that decomposes the signatures of sea–ice, sea surface temperature and feedback mechanisms. The results reveal that the Southern Annular Mode (SAM) multidecadal variability is found to be modulated by coupled interactions whereas its sub-seasonal to interannual vacillation seems to follow a random trajectory. The latter may strengthen the notion that its predictability is limited even with the use of ESMs. Most of the atmospheric circulation variability and recent changes may be explained by the ocean thermal forcing and coupled interactions. However, the influence of sea–ice forcing alone is largely indistinguishable and predominantly localised in nature. The result also confirms that the Antarctic dipole-like sea–ice pattern, a leading climate mode in the SH, has intensified in the last three decades irrespective of season. The probable indication is that processes within the Southern Ocean may play a key role, which deserves further investigation. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Coupled interaction; Dipole-like sea–ice pattern; ESM; Feedback mechanism; Model sensitivity; SAM
语种	英语
scopus关键词	air-sea interaction; atmosphere-ice-ocean system; atmospheric circulation; atmospheric forcing; climate change; climate forcing; decadal variation; experimental study; feedback mechanism; sea ice; sea surface temperature; sensitivity analysis; Southern Hemisphere; trend analysis; Southern Ocean
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/145451
作者单位	CSIR-Smart Places, Holistic Climate Change Impact, Pretoria, South Africa; Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa; Global Change Institute, University of the Witwatersrand, Johannesburg, South Africa; Application Laboratory, JAMSTEC, Yokohama, Japan; CSIRO Marine and Atmospheric Research, Aspendale, VIC, Australia
推荐引用方式 GB/T 7714	Beraki A.F.,Morioka Y.,Engelbrecht F.A.,et al. Examining the impact of multiple climate forcings on simulated Southern Hemisphere climate variability[J],2020,54.
APA	Beraki A.F..,Morioka Y..,Engelbrecht F.A..,Nonaka M..,Thatcher M..,...&Behera S..(2020).Examining the impact of multiple climate forcings on simulated Southern Hemisphere climate variability.Climate Dynamics,54.
MLA	Beraki A.F.,et al."Examining the impact of multiple climate forcings on simulated Southern Hemisphere climate variability".Climate Dynamics 54(2020).