Eddy-induced variability of the meridional overturning circulation in a model of the North Atlantic:Eddy-Induced AMOC variability

Thomas, Matthew and Zhai, X. (2013) Eddy-induced variability of the meridional overturning circulation in a model of the North Atlantic:Eddy-Induced AMOC variability. Geophysical Research Letters, 40 (11). pp. 2742-2747. ISSN 0094-8276

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Abstract

Observations of the Atlantic Meridional Overturning Circulation (AMOC) show that it varies on all timescales. Here we isolate the contribution of eddies to AMOC variability using an eddy-permitting model of the North Atlantic driven by climatological and steady forcing. The eddy-induced AMOC variability is found to be ubiquitous and significant at all latitudes, with a magnitude comparable to the seasonal cycle in the subtropics. Furthermore, the eddy-induced AMOC variability is manifested not only at high frequencies but also at interannual and longer timescales. These results imply that a significant fraction of the AMOC variability is inherently unpredictable at seasonal to interannual timescales.

Item Type: Article
Uncontrolled Keywords: atlantic meridional overturning circulation,eddy variability,regional modeling
Faculty \ School: Faculty of Science > School of Environmental Sciences
Faculty of Science
Depositing User: Pure Connector
Date Deposited: 23 Oct 2013 09:48
Last Modified: 21 Apr 2020 22:02
URI: https://ueaeprints.uea.ac.uk/id/eprint/43799
DOI: 10.1002/grl.50532

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