Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre

[1] One of the longest current meter time series in the Lanzarote Passage in the eastern boundary of the North Atlantic Subtropical Gyre has been used to determine and quantify the 9-year mean transport, the inter-annual and seasonal mass transport variability for the three water masses present in t...

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Autores: Fraile-Nuez, Eugenio, Machín, Francisco, Vélez-Belchí, Pedro, López-Laatzen, Federico, Borges, R., Hernández-Guerra, Alonso, Benítez-Barrios, Verónica María
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/318070
Acceso en línea:http://hdl.handle.net/10261/318070
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Canarias
Medio Marino
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spelling Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical GyreFraile-Nuez, EugenioMachín, FranciscoVélez-Belchí, PedroLópez-Laatzen, FedericoBorges, R.Hernández-Guerra, AlonsoBenítez-Barrios, Verónica MaríaCentro Oceanográfico de CanariasMedio Marino[1] One of the longest current meter time series in the Lanzarote Passage in the eastern boundary of the North Atlantic Subtropical Gyre has been used to determine and quantify the 9-year mean transport, the inter-annual and seasonal mass transport variability for the three water masses present in the area. Results show North Atlantic Central Water (NACW) flowing southward in the upper levels with a mean mass transport of −0.81 ± 1.48 Sv, Antarctic Intermediate Water (AAIW) flowing northward at intermediate levels with a mean transport of +0.09 ± 0.57 Sv and Mediterranean Water (MW) flowing southward in the deep part of the passage with a mean transport of −0.05 ± 0.17 Sv. Harmonic and wavelet analysis show the presence of a seasonal pattern in the passage for the three water masses. A maximum southward transport in winter and spring has been observed for the NACW followed by a minimum in summer and fall. Near zero values during winter and spring are found for AAIW, with a maximum northward value in summer and a negative value in fall, when this water mass reverses its flow. MW has a similar seasonal pattern to NACW. The vertical structure in the Lanzarote Passage can be approximated by four significant oscillatory modes which cumulatively explain 86.4% of the variance. The strong transport fluctuation found at the seasonal and inter-annual timescales demonstrates that the Eastern Boundary Current transport has a strong impact on meridional overturning estimates, thus indicating that to understand Meridional Overturning Circulation variability, these transport estimates at the eastern Atlantic margin are necessary.202320232010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/318070reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Canariasinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3180702026-05-22T06:33:51Z
dc.title.none.fl_str_mv Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
title Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
spellingShingle Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
Fraile-Nuez, Eugenio
Centro Oceanográfico de Canarias
Medio Marino
title_short Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
title_full Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
title_fullStr Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
title_full_unstemmed Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
title_sort Nine year of Mass Transport Data in the Eastern Boundary of the North Atlantic Subtropical Gyre
dc.creator.none.fl_str_mv Fraile-Nuez, Eugenio
Machín, Francisco
Vélez-Belchí, Pedro
López-Laatzen, Federico
Borges, R.
Hernández-Guerra, Alonso
Benítez-Barrios, Verónica María
author Fraile-Nuez, Eugenio
author_facet Fraile-Nuez, Eugenio
Machín, Francisco
Vélez-Belchí, Pedro
López-Laatzen, Federico
Borges, R.
Hernández-Guerra, Alonso
Benítez-Barrios, Verónica María
author_role author
author2 Machín, Francisco
Vélez-Belchí, Pedro
López-Laatzen, Federico
Borges, R.
Hernández-Guerra, Alonso
Benítez-Barrios, Verónica María
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Canarias
Medio Marino
topic Centro Oceanográfico de Canarias
Medio Marino
description [1] One of the longest current meter time series in the Lanzarote Passage in the eastern boundary of the North Atlantic Subtropical Gyre has been used to determine and quantify the 9-year mean transport, the inter-annual and seasonal mass transport variability for the three water masses present in the area. Results show North Atlantic Central Water (NACW) flowing southward in the upper levels with a mean mass transport of −0.81 ± 1.48 Sv, Antarctic Intermediate Water (AAIW) flowing northward at intermediate levels with a mean transport of +0.09 ± 0.57 Sv and Mediterranean Water (MW) flowing southward in the deep part of the passage with a mean transport of −0.05 ± 0.17 Sv. Harmonic and wavelet analysis show the presence of a seasonal pattern in the passage for the three water masses. A maximum southward transport in winter and spring has been observed for the NACW followed by a minimum in summer and fall. Near zero values during winter and spring are found for AAIW, with a maximum northward value in summer and a negative value in fall, when this water mass reverses its flow. MW has a similar seasonal pattern to NACW. The vertical structure in the Lanzarote Passage can be approximated by four significant oscillatory modes which cumulatively explain 86.4% of the variance. The strong transport fluctuation found at the seasonal and inter-annual timescales demonstrates that the Eastern Boundary Current transport has a strong impact on meridional overturning estimates, thus indicating that to understand Meridional Overturning Circulation variability, these transport estimates at the eastern Atlantic margin are necessary.
publishDate 2010
dc.date.none.fl_str_mv 2010
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/318070
url http://hdl.handle.net/10261/318070
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Canarias
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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