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 268N, which is driven largely by the eastern boundary. The eastern boundary...

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Detalles Bibliográficos
Autores: Pérez-Hernández, María Dolores, McCarthy, Gerard, Vélez-Belchí, Pedro, Smeed, David, Fraile-Nuez, Eugenio, Hernández-Guerra, Alonso
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/318495
Acceso en línea:http://hdl.handle.net/10261/318495
Access Level:acceso abierto
Palabra clave:Medio Marino
Centro Oceanográfico de Canarias
Descripción
Sumario: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 268N, 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 north- ward flow of the Intermediate Poleward Undercurrent. In contrast, during the remaining seasons the trans- port through the LP is southward due to the Canary Upwelling Current. These processes are linked to the seasonal cycle of the AMOC.