气候变化领域集成服务门户(CCPortal): Distinct sources of interannual subtropical and subpolar Atlantic overturning variability

CCPortal

DOI	10.1038/s41561-021-00759-4
	Distinct sources of interannual subtropical and subpolar Atlantic overturning variability
	Kostov Y.; Johnson H.L.; Marshall D.P.; Heimbach P.; Forget G.; Holliday N.P.; Lozier M.S.; Li F.; Pillar H.R.; Smith T.
发表日期	2021
ISSN	17520894
起始页码	491
结束页码	495
卷号	14 期号:7
英文摘要	The Atlantic meridional overturning circulation (AMOC) is pivotal for regional and global climate due to its key role in the uptake and redistribution of heat and carbon. Establishing the causes of historical variability in AMOC strength on different timescales can tell us how the circulation may respond to natural and anthropogenic changes at the ocean surface. However, understanding observed AMOC variability is challenging because the circulation is influenced by multiple factors that co-vary and whose overlapping impacts persist for years. Here we reconstruct and unambiguously attribute intermonthly and interannual AMOC variability at two observational arrays to the recent history of surface wind stress, temperature and salinity. We use a state-of-the-art technique that computes space- and time-varying sensitivity patterns of the AMOC strength with respect to multiple surface properties from a numerical ocean circulation model constrained by observations. While, on interannual timescales, AMOC variability at 26° N is overwhelmingly dominated by a linear response to local wind stress, overturning variability at subpolar latitudes is generated by the combined effects of wind stress and surface buoyancy anomalies. Our analysis provides a quantitative attribution of subpolar AMOC variability to temperature, salinity and wind anomalies at the ocean surface. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	annual variation; global climate; meridional circulation; oceanic circulation; overturn; subtropical region; surface wind; wind stress; Atlantic Ocean
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206919
作者单位	Geography, University of Exeter, Exeter, United Kingdom; Earth Sciences, University of Oxford, Oxford, United Kingdom; Physics, University of Oxford, Oxford, United Kingdom; Oden Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, TX, United States; Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Institute for Geophysics, University of Texas at Austin, Austin, TX, United States; Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; National Oceanography Centre, Southampton, United Kingdom; Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
推荐引用方式 GB/T 7714	Kostov Y.,Johnson H.L.,Marshall D.P.,et al. Distinct sources of interannual subtropical and subpolar Atlantic overturning variability[J],2021,14(7).
APA	Kostov Y..,Johnson H.L..,Marshall D.P..,Heimbach P..,Forget G..,...&Smith T..(2021).Distinct sources of interannual subtropical and subpolar Atlantic overturning variability.Nature Geoscience,14(7).
MLA	Kostov Y.,et al."Distinct sources of interannual subtropical and subpolar Atlantic overturning variability".Nature Geoscience 14.7(2021).