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Energetics of the Southern Ocean mode

Energetics of the Southern Ocean mode
Energetics of the Southern Ocean mode
Recently, multidecadal variability in the Southern Ocean has been found in a strongly eddying global ocean circulation model. In this paper, we study the Lorenz energy cycle of this so‐called Southern Ocean Mode (SOM). The Lorenz energy cycle analysis provides details on the energy pathways associated with the SOM. It shows that ocean eddies and the baroclinic energy pathway together with variations in the kinetic energy input by the wind are crucial aspects of the variability. It is also shown how convective mixing, which is induced by the SOM in particular in the Weddell Gyre, is responsible for the large‐scale multidecadal variability in Antarctic Bottom Water and Atlantic Meridional Overturning Circulation.
2169-9275
9283-9304
Jüling, A.
a2994744-2ac4-408e-9178-2e8a16e444df
Viebahn, J. P.
c929e5c6-7265-4f17-8ef4-d304f6c1761e
Drijfhout, S. S.
a5c76079-179b-490c-93fe-fc0391aacf13
Dijkstra, H. A.
9178b06d-9de5-4f02-b9ff-204b20620291
Jüling, A.
a2994744-2ac4-408e-9178-2e8a16e444df
Viebahn, J. P.
c929e5c6-7265-4f17-8ef4-d304f6c1761e
Drijfhout, S. S.
a5c76079-179b-490c-93fe-fc0391aacf13
Dijkstra, H. A.
9178b06d-9de5-4f02-b9ff-204b20620291

Jüling, A., Viebahn, J. P., Drijfhout, S. S. and Dijkstra, H. A. (2019) Energetics of the Southern Ocean mode. Journal of Geophysical Research: Oceans, 9283-9304. (doi:10.1029/2018JC014191).

Record type: Article

Abstract

Recently, multidecadal variability in the Southern Ocean has been found in a strongly eddying global ocean circulation model. In this paper, we study the Lorenz energy cycle of this so‐called Southern Ocean Mode (SOM). The Lorenz energy cycle analysis provides details on the energy pathways associated with the SOM. It shows that ocean eddies and the baroclinic energy pathway together with variations in the kinetic energy input by the wind are crucial aspects of the variability. It is also shown how convective mixing, which is induced by the SOM in particular in the Weddell Gyre, is responsible for the large‐scale multidecadal variability in Antarctic Bottom Water and Atlantic Meridional Overturning Circulation.

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J-ling_et_al-2018-Journal_of_Geophysical_Research__Oceans - Version of Record
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e-pub ahead of print date: 27 November 2018
Published date: 22 January 2019

Identifiers

Local EPrints ID: 427777
URI: https://eprints.soton.ac.uk/id/eprint/427777
ISSN: 2169-9275
PURE UUID: a5dff4d2-f7a6-4193-8f8b-b56cad60c5f8

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Date deposited: 29 Jan 2019 17:30
Last modified: 14 Aug 2019 16:35

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