气候变化领域集成服务门户(CCPortal): Reconciling the Relationship Between the AMOC and Labrador Sea in OSNAP Observations and Climate Models

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DOI	10.1029/2020GL089793
	Reconciling the Relationship Between the AMOC and Labrador Sea in OSNAP Observations and Climate Models
	Menary M.B.; Jackson L.C.; Lozier M.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	The AMOC (Atlantic Meridional Overturning Circulation) is a key driver of climate variability. Our understanding, based largely on climate models, is that the Labrador Sea has an important role in shaping the evolution of the AMOC. However, a recent high-profile observational campaign (Overturning in the Subpolar North Atlantic, OSNAP) has called into question the importance of the Labrador Sea, and hence the credibility of the AMOC representation in climate models. Here, we attempt to reconcile these viewpoints by making the first direct comparison between OSNAP and a coupled climate model. The model compares well to the observations, demonstrating a more prominent role for overturning in the eastern than western subpolar gyre. Density anomalies generated by surface forcing in the Irminger Sea propagate into the Labrador Sea, where they dominate the density variability. Thus, the Labrador Sea may not be the origin of AMOC variability despite correlations with densities there. ©2020. The Authors.
英文关键词	Oceanography; Atlantic meridional overturning circulations; Climate variability; Coupled climate model; Density anomalies; Density variabilities; Subpolar gyres; Subpolar North Atlantic; Surface forcing; Climate models; air-sea interaction; Atlantic Multidecadal Oscillation; climate forcing; climate modeling; climate variation; meridional circulation; overturn; Atlantic Ocean; Irminger Sea; Labrador Sea
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169719
作者单位	LOCEAN/IPSL, Sorbonne Universités (SU)-CNRS-IRD-MNHN, Paris, France; Met Office Hadley Centre, Met Office, Exeter, United Kingdom; Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
推荐引用方式 GB/T 7714	Menary M.B.,Jackson L.C.,Lozier M.S.. Reconciling the Relationship Between the AMOC and Labrador Sea in OSNAP Observations and Climate Models[J],2020,47(18).
APA	Menary M.B.,Jackson L.C.,&Lozier M.S..(2020).Reconciling the Relationship Between the AMOC and Labrador Sea in OSNAP Observations and Climate Models.Geophysical Research Letters,47(18).
MLA	Menary M.B.,et al."Reconciling the Relationship Between the AMOC and Labrador Sea in OSNAP Observations and Climate Models".Geophysical Research Letters 47.18(2020).