气候变化领域集成服务门户(CCPortal): Freshwater forcing of the Atlantic Meridional Overturning Circulation revisited

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DOI	10.1038/s41558-022-01328-2
	Freshwater forcing of the Atlantic Meridional Overturning Circulation revisited
	He F.; Clark P.U.
发表日期	2022
ISSN	1758-678X
起始页码	449
结束页码	454
卷号	12 期号:5
英文摘要	Freshwater (FW) forcing is widely identified as the dominant mechanism causing reductions of the Atlantic Meridional Overturning Circulation (AMOC), a climate tipping point that led to past abrupt millennial-scale climate changes. However, the AMOC response to FW forcing has not been rigorously assessed due to the lack of long-term AMOC observations and uncertainties of sea-level rise and ice-sheet melt needed to infer past FW forcing. Here we show a muted AMOC response to FW forcing (~50 m sea-level rise from the final deglaciation of Northern Hemisphere ice sheets) in the early-to-middle Holocene ~11,700–6,000 years ago. Including this muted AMOC response in a transient simulation of the Holocene with an ocean–atmosphere climate model improves the agreement between simulated and proxy temperatures of the past 21,000 years. This demonstrates that the AMOC may not be as sensitive to FW fluxes and Arctic freshening as is currently projected for the end of the twenty-first century. © 2022, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	atmosphere-ocean coupling; climate change; climate modeling; deglaciation; Holocene; ice sheet; meridional circulation; Northern Hemisphere; sea level change; Arctic Ocean
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256701
作者单位	Center for Climatic Research, Nelson Institute for Environmental Studies, University of Wisconsin–Madison, Madison, WI, United States; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; School of Geography and Environmental Sciences, University of Ulster, Coleraine, United Kingdom
推荐引用方式 GB/T 7714	He F.,Clark P.U.. Freshwater forcing of the Atlantic Meridional Overturning Circulation revisited[J],2022,12(5).
APA	He F.,&Clark P.U..(2022).Freshwater forcing of the Atlantic Meridional Overturning Circulation revisited.Nature Climate Change,12(5).
MLA	He F.,et al."Freshwater forcing of the Atlantic Meridional Overturning Circulation revisited".Nature Climate Change 12.5(2022).