The Canary Basin contribution to the seasonal cycle of the Atlantic Meridional Overturning Circulation at 26°N
The Canary Basin contribution to the seasonal cycle of the Atlantic Meridional Overturning Circulation at 26°N
This study examines the seasonal cycle of the Atlantic Meridional Overturning Circulation (AMOC) and its eastern boundary contributions. The cycle has a magnitude of 6 Sv, as measured by the RAPID/MOCHA/WBTS project array at 26°N, which is driven largely by the eastern boundary. The eastern boundary variations are explored in the context of the regional circulation around the Canary Islands. There is a 3 month lag between maximum wind forcing and the largest eastern boundary transports, which is explained in terms of a model for Rossby wave generated at the eastern boundary. Two dynamic processes take place through the Lanzarote Passage (LP) in fall: the recirculation of the Canary Current and the northward flow of the Intermediate Poleward Undercurrent. In contrast, during the remaining seasons the transport through the LP is southward due to the Canary Upwelling Current. These processes are linked to the seasonal cycle of the AMOC.
AMOC, Canary Basin, eastern boundary, North Atlantic Subtropical Gyre, RAPID, EBC
7237-7252
Pérez-Hernández, M.D.
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McCarthy, G.D.
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Vélez-Belchí, P.
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Smeed, D.A.
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Fraile-Nuez, E.
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Hernández-Guerra, A.
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15 November 2015
Pérez-Hernández, M.D.
d86858d1-7c13-4de0-b411-1ee752093896
McCarthy, G.D.
99241bcb-5667-469d-b7ae-4d308d516bd6
Vélez-Belchí, P.
1d7f8cad-acde-48db-a9d5-a1eda0fd28db
Smeed, D.A.
79eece5a-c870-47f9-bba0-0a4ef0369490
Fraile-Nuez, E.
43c344c4-6f7c-4444-bc4a-fe4cf850e338
Hernández-Guerra, A.
fbb0909b-7d38-455f-b4d2-54133ebdd731
Pérez-Hernández, M.D., McCarthy, G.D., Vélez-Belchí, P., Smeed, D.A., Fraile-Nuez, E. and Hernández-Guerra, A.
(2015)
The Canary Basin contribution to the seasonal cycle of the Atlantic Meridional Overturning Circulation at 26°N.
Journal of Geophysical Research: Oceans, 120 (11), .
(doi:10.1002/2015JC010969).
Abstract
This study examines the seasonal cycle of the Atlantic Meridional Overturning Circulation (AMOC) and its eastern boundary contributions. The cycle has a magnitude of 6 Sv, as measured by the RAPID/MOCHA/WBTS project array at 26°N, which is driven largely by the eastern boundary. The eastern boundary variations are explored in the context of the regional circulation around the Canary Islands. There is a 3 month lag between maximum wind forcing and the largest eastern boundary transports, which is explained in terms of a model for Rossby wave generated at the eastern boundary. Two dynamic processes take place through the Lanzarote Passage (LP) in fall: the recirculation of the Canary Current and the northward flow of the Intermediate Poleward Undercurrent. In contrast, during the remaining seasons the transport through the LP is southward due to the Canary Upwelling Current. These processes are linked to the seasonal cycle of the AMOC.
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Accepted/In Press date: 15 November 2015
Published date: 15 November 2015
Keywords:
AMOC, Canary Basin, eastern boundary, North Atlantic Subtropical Gyre, RAPID, EBC
Organisations:
Marine Physics and Ocean Climate
Identifiers
Local EPrints ID: 383744
URI: http://eprints.soton.ac.uk/id/eprint/383744
ISSN: 2169-9275
PURE UUID: 2db3a56e-7548-4e83-a75c-b8b828c62c3d
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Date deposited: 09 Nov 2015 10:01
Last modified: 14 Mar 2024 21:47
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Contributors
Author:
M.D. Pérez-Hernández
Author:
G.D. McCarthy
Author:
P. Vélez-Belchí
Author:
D.A. Smeed
Author:
E. Fraile-Nuez
Author:
A. Hernández-Guerra
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