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    The Canary Basin contribution to the seasonal cycle of the Atlantic Meridional Overturning Circulation at 26°N


    Perez-Hernandez, M.D. and McCarthy, Gerard D. and Velez-Belchi, P. and Smeed, David A. and 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). pp. 7237-7252. ISSN 2169-9291

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    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.

    Item Type: Article
    Keywords: AMOC; Canary Basin; eastern boundary; North Atlantic Subtropical Gyre; RAPID; EBC;
    Academic Unit: Faculty of Social Sciences > Geography
    Item ID: 12188
    Identification Number: https://doi.org/10.1002/2015JC010969
    Depositing User: Gerard McCarthy
    Date Deposited: 22 Jan 2020 15:35
    Journal or Publication Title: Journal of Geophysical Research: Oceans
    Publisher: Wiley Online Library
    Refereed: Yes
    URI:

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