Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/121937
Title: The Seasonal cycle of the eastern boundary currents of the North Atlantic Subtropical Gyre
Authors: Pérez Hernández, María Dolores 
Hernández Guerra, Alonso 
Cana Cascallar, Luis Cesáreo 
Arumí Planas, Cristina 
Cainzos Díaz, Verónica 
González Santana, Álvaro Jesús 
Gutiérrez Guerra, Miguel Ángel 
Martínez Marrero, Antonio 
Mosquera Giménez, Ángela 
Presas Navarro,Maria Carmen 
Santana Toscano, Daniel 
Vélez Belchí,Pedro 
UNESCO Clasification: 251007 Oceanografía física
251008 Interacciones mar-aire
Keywords: Canary current
Seasonal cycle
Atlantic Meridional Overturning Circulation
Eastern boundary
Lanzarote Passage, et al
Issue Date: 2023
Project: Variabilidad Estacional de la Amoc: la Corriente de Canarias 
Journal: Journal of geophysical research. Oceans 
Abstract: For the first time, four dedicated hydrographic cruises – one in each season – took place in 2015 around the Canary Islands to determine the seasonality of the flows at the eastern boundary of the North Atlantic Subtropical Gyre. The Canary Current (CC) is the eastern boundary current of the North Atlantic Subtropical Gyre and links the Azores Current with the North Equatorial Current. The 2015 estimations show that the CC has a seasonal behavior in its path and strength, flowing on its easternmost position in winter (3.4±0.3 Sv), through the Canary Islands in spring (2.1±0.7 Sv) and summer (2.0±0.6 Sv) and on its westernmost position in fall (3.2±0.4 Sv). At the Lanzarote Passage (LP), the dominant flow is southward except in fall, where a northward transport is observed at the surface (1.1±0.3 Sv) and intermediate (1.3±0.2 Sv) layers. Combining all the available transport estimations a historical composite observational seasonal cycle is constructed and fits the 2015 seasonal cycle. Hence, a solid seasonal cycle is constructed supported by all the available observations in the area. The LP seasonal cycle and seasonal amplitude match the seasonal cycle of the Atlantic Meridional Overturning Circulation (AMOC) measured by the RAPID-MOCHA data array. These indicates that the seasonal cycle of the AMOC of the RAPID-MOCHA data array is driven by the dynamics of the eastern boundary currents.
URI: http://hdl.handle.net/10553/121937
ISSN: 2169-9291
DOI: 10.1029/2022JC019487
Source: Journal of Geophysical Research: Oceans[ISSN 2169-9275],v. 128 (4), (Abril 2023)
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