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The recent Atlantic cold anomaly: Causes, consequences, and related phenomena

The recent Atlantic cold anomaly: Causes, consequences, and related phenomena
The recent Atlantic cold anomaly: Causes, consequences, and related phenomena

Cold ocean temperature anomalies have been observed in the mid- to high-latitude North Atlantic on interannual to centennial timescales. Most notably, a large region of persistently low surface temperatures accompanied by a sharp reduction in ocean heat content was evident in the subpolar gyre from the winter of 2013-2014 to 2016, and the presence of this feature at a time of pervasive warming elsewhere has stimulated considerable debate. Here, we review the role of air-sea interaction and ocean processes in generating this cold anomaly and place it in a longer-term context. We also discuss the potential impacts of surface temperature anomalies for the atmosphere, including the North Atlantic Oscillation and European heat waves; contrast the behavior of the Atlantic with the extreme warm surface event that occurred in the North Pacific over a similar timescale; and consider the possibility that these events represent a response to a change in atmospheric planetary wave forcing.

air-sea heat flux, European impacts, large-scale ocean circulation, North Atlantic cold anomaly, North Pacific warm anomaly, sea surface temperature
1941-1405
475-501
Josey, Simon A.
2252ab7f-5cd2-49fd-a951-aece44553d93
Hirschi, Joel J.M.
c8a45006-a6e3-4319-b5f5-648e8ef98906
Sinha, Bablu
fbb0cf78-c13b-43e0-b0ae-735ca4d4cded
Duchez, Aurélie
226b5792-d50e-4240-999c-1688a80bce01
Grist, Jeremy P.
ffea99af-f811-436f-9bac-5b02ba6dc00f
Marsh, Robert
702c2e7e-ac19-4019-abd9-a8614ab27717
Josey, Simon A.
2252ab7f-5cd2-49fd-a951-aece44553d93
Hirschi, Joel J.M.
c8a45006-a6e3-4319-b5f5-648e8ef98906
Sinha, Bablu
fbb0cf78-c13b-43e0-b0ae-735ca4d4cded
Duchez, Aurélie
226b5792-d50e-4240-999c-1688a80bce01
Grist, Jeremy P.
ffea99af-f811-436f-9bac-5b02ba6dc00f
Marsh, Robert
702c2e7e-ac19-4019-abd9-a8614ab27717

Josey, Simon A., Hirschi, Joel J.M., Sinha, Bablu, Duchez, Aurélie, Grist, Jeremy P. and Marsh, Robert (2018) The recent Atlantic cold anomaly: Causes, consequences, and related phenomena. Annual Review of Marine Science, 10, 475-501. (doi:10.1146/annurev-marine-121916-063102).

Record type: Review

Abstract

Cold ocean temperature anomalies have been observed in the mid- to high-latitude North Atlantic on interannual to centennial timescales. Most notably, a large region of persistently low surface temperatures accompanied by a sharp reduction in ocean heat content was evident in the subpolar gyre from the winter of 2013-2014 to 2016, and the presence of this feature at a time of pervasive warming elsewhere has stimulated considerable debate. Here, we review the role of air-sea interaction and ocean processes in generating this cold anomaly and place it in a longer-term context. We also discuss the potential impacts of surface temperature anomalies for the atmosphere, including the North Atlantic Oscillation and European heat waves; contrast the behavior of the Atlantic with the extreme warm surface event that occurred in the North Pacific over a similar timescale; and consider the possibility that these events represent a response to a change in atmospheric planetary wave forcing.

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More information

e-pub ahead of print date: 15 September 2017
Published date: 3 January 2018
Keywords: air-sea heat flux, European impacts, large-scale ocean circulation, North Atlantic cold anomaly, North Pacific warm anomaly, sea surface temperature

Identifiers

Local EPrints ID: 417539
URI: https://eprints.soton.ac.uk/id/eprint/417539
ISSN: 1941-1405
PURE UUID: bb2dd76c-ee13-427f-b031-5a427b71cbb8

Catalogue record

Date deposited: 02 Feb 2018 17:30
Last modified: 02 Feb 2018 17:30

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Contributors

Author: Simon A. Josey
Author: Joel J.M. Hirschi
Author: Bablu Sinha
Author: Aurélie Duchez
Author: Jeremy P. Grist
Author: Robert Marsh

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