Canary Current and North Equatorial Current from an Inverse Box Model
The large-scale Canary Basin circulation is estimated from a box inverse model applied to hydrographic data from a quasi-synoptic survey carried out in September 2003. The cruise consisted of 76 full depth CTD and oxygen stations. Circulation is required to nearly conserve mass and anomalies of sali...
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Online Access: | http://hdl.handle.net/10508/7268 http://hdl.handle.net/10261/318563 https://doi.org/10.1029/2005JC003032 |
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ftcsic:oai:digital.csic.es:10261/318563 2024-02-11T09:57:27+01:00 Canary Current and North Equatorial Current from an Inverse Box Model Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Martínez, A. Parrilla-Barrera, Gregorio Vélez-Belchí, Pedro Atlantic Ocean Central Atlantic Eastern Central Atlantic Canary Islands 2005 http://hdl.handle.net/10508/7268 http://hdl.handle.net/10261/318563 https://doi.org/10.1029/2005JC003032 unknown Centro Oceanográfico de Canarias https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2005JC003032 Journal of Geophysical Research-Oceans, 110. 2005: - 2169-9291 http://hdl.handle.net/10508/7268 http://hdl.handle.net/10261/318563 doi:10.1029/2005JC003032 292 open Medio Marino Centro Oceanográfico de Canarias research article 2005 ftcsic https://doi.org/10.1029/2005JC003032 2024-01-16T11:45:09Z The large-scale Canary Basin circulation is estimated from a box inverse model applied to hydrographic data from a quasi-synoptic survey carried out in September 2003. The cruise consisted of 76 full depth CTD and oxygen stations. Circulation is required to nearly conserve mass and anomalies of salinity and heat within layers bounded by neutral surfaces. It permits advective and diffusive exchange between layers and an adjustment of the Ekman transport and the freshwater flux divergences. The Canary Current at the thermocline layer transports a net mass of 4.7 ± 0.8 Sv southward north of the Canary Islands from the African coast to 19°W. It is divided into a northward circulation at a rate of 1.1 ± 0.5 Sv between the African coast and Lanzarote Island and a southward transport of 5.8 ± 0.6 Sv. It transports North Atlantic Central Water and organic matters advected offshore by the filaments protruding from the upwelling system off northwest Africa. At 24°N, the Canary Current feeds the North Equatorial Current that transports a mixture of North and South Atlantic Central Waters westward. In the intermediate layer a southwestward flow of 1.2 ± 1.1 Sv transports Mediterranean Water to the Subtropical Gyre, though the highest salt flux is transported by a meddy. Oxygen distribution and mass transport suggest a northeastward deep flow of a water mass colder than 2.2°C consisting of diluted Antarctic Bottom Water. The heat and freshwater divergences and the average dianeutral velocity and diffusion between the sections and the African coast are negligible. No Article in Journal/Newspaper Antarc* Antarctic North Atlantic Digital.CSIC (Spanish National Research Council) Antarctic Journal of Geophysical Research 110 C12 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Medio Marino Centro Oceanográfico de Canarias |
spellingShingle |
Medio Marino Centro Oceanográfico de Canarias Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Martínez, A. Parrilla-Barrera, Gregorio Vélez-Belchí, Pedro Canary Current and North Equatorial Current from an Inverse Box Model |
topic_facet |
Medio Marino Centro Oceanográfico de Canarias |
description |
The large-scale Canary Basin circulation is estimated from a box inverse model applied to hydrographic data from a quasi-synoptic survey carried out in September 2003. The cruise consisted of 76 full depth CTD and oxygen stations. Circulation is required to nearly conserve mass and anomalies of salinity and heat within layers bounded by neutral surfaces. It permits advective and diffusive exchange between layers and an adjustment of the Ekman transport and the freshwater flux divergences. The Canary Current at the thermocline layer transports a net mass of 4.7 ± 0.8 Sv southward north of the Canary Islands from the African coast to 19°W. It is divided into a northward circulation at a rate of 1.1 ± 0.5 Sv between the African coast and Lanzarote Island and a southward transport of 5.8 ± 0.6 Sv. It transports North Atlantic Central Water and organic matters advected offshore by the filaments protruding from the upwelling system off northwest Africa. At 24°N, the Canary Current feeds the North Equatorial Current that transports a mixture of North and South Atlantic Central Waters westward. In the intermediate layer a southwestward flow of 1.2 ± 1.1 Sv transports Mediterranean Water to the Subtropical Gyre, though the highest salt flux is transported by a meddy. Oxygen distribution and mass transport suggest a northeastward deep flow of a water mass colder than 2.2°C consisting of diluted Antarctic Bottom Water. The heat and freshwater divergences and the average dianeutral velocity and diffusion between the sections and the African coast are negligible. No |
format |
Article in Journal/Newspaper |
author |
Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Martínez, A. Parrilla-Barrera, Gregorio Vélez-Belchí, Pedro |
author_facet |
Hernández-Guerra, Alonso Fraile-Nuez, Eugenio López-Laatzen, Federico Martínez, A. Parrilla-Barrera, Gregorio Vélez-Belchí, Pedro |
author_sort |
Hernández-Guerra, Alonso |
title |
Canary Current and North Equatorial Current from an Inverse Box Model |
title_short |
Canary Current and North Equatorial Current from an Inverse Box Model |
title_full |
Canary Current and North Equatorial Current from an Inverse Box Model |
title_fullStr |
Canary Current and North Equatorial Current from an Inverse Box Model |
title_full_unstemmed |
Canary Current and North Equatorial Current from an Inverse Box Model |
title_sort |
canary current and north equatorial current from an inverse box model |
publishDate |
2005 |
url |
http://hdl.handle.net/10508/7268 http://hdl.handle.net/10261/318563 https://doi.org/10.1029/2005JC003032 |
op_coverage |
Atlantic Ocean Central Atlantic Eastern Central Atlantic Canary Islands |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_relation |
Centro Oceanográfico de Canarias https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2005JC003032 Journal of Geophysical Research-Oceans, 110. 2005: - 2169-9291 http://hdl.handle.net/10508/7268 http://hdl.handle.net/10261/318563 doi:10.1029/2005JC003032 292 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2005JC003032 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C12 |
_version_ |
1790609744144105472 |