Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S

Autores
Chidichimo, María Paz; Piola, Alberto Ricardo; Meinen, Christopher S.; Perez, Renellys; Campos, Edmo; Dong, Shenfu; Lumpkin, Rick; Garzoli, S. L.
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Brazil Current, the western limb of the subtropical gyre of the South Atlantic Ocean, is one of the major Western Boundary Currents of the global ocean. Here, we present the first multiyear continuous daily time series of Brazil Current absolute volume transport obtained using 6+ years of observations from a line of four pressure-recording inverted echo sounders (PIES) deployed at 34.5°S. The array was augmented in December 2012 with two current meter-equipped PIES and in December 2013 with a moored Acoustic Doppler Current Profiler on the upper continental slope. The Brazil Current is bounded by the sea surface and the neutral density interface separating South Atlantic Central Water and Antarctic Intermediate Water, which is on average at a reference pressure of 628 ± 46 dbar, and it is confined west of 49.5°W. The Brazil Current has a mean strength of −14.0 ± 2.8 Sv (1 Sv ≡ 106 m3 s−1; negative indicates southward flow) with a temporal standard deviation of 8.8 Sv and peak-to-peak range from −41.7 to +20 Sv. About 80% of the absolute transport variance is concentrated at periods shorter than 150 days with a prominent peak at 100 days. The baroclinic component accounts for 85% of the absolute transport variance, but the barotropic variance is not negligible. The baroclinic and barotropic transports are uncorrelated, demonstrating the need to measure both transport components independently. Given the energetic high frequency transport variations, statistically significant seasonal to interannual variability and trends have yet to be detected.
Fil: Chidichimo, María Paz. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Centre National de la Recherche Scientifique. Institut de Recherche pour le Developpement. Département Ecologie, Biodiversité et Fonctionnement des Ecosystèmes Continentaux; Francia
Fil: Piola, Alberto Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Centre National de la Recherche Scientifique. Institut de Recherche pour le Developpement. Département Ecologie, Biodiversité et Fonctionnement des Ecosystèmes Continentaux; Francia
Fil: Meinen, Christopher S.. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Perez, Renellys. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Campos, Edmo. Universidade de Sao Paulo; Brasil. American University Of Sharjah.; Emiratos Árabes Unidos
Fil: Dong, Shenfu. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Lumpkin, Rick. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Garzoli, S. L.. National Ocean And Atmospheric Administration; Estados Unidos
Materia
BRAZIL CURRENT
MERIDIONAL OVERTURNING CIRCULATION
OBSERVATIONS
TRANSPORT ARRAY
VARIABILITY
VOLUME TRANSPORT
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/154906
Acceder
id CONICETDig_5ec2f786876ad8b9a10cf8b9e374742e
oai_identifier_str oai:ri.conicet.gov.ar:11336/154906
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°SChidichimo, María PazPiola, Alberto RicardoMeinen, Christopher S.Perez, RenellysCampos, EdmoDong, ShenfuLumpkin, RickGarzoli, S. L.BRAZIL CURRENTMERIDIONAL OVERTURNING CIRCULATIONOBSERVATIONSTRANSPORT ARRAYVARIABILITYVOLUME TRANSPORThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Brazil Current, the western limb of the subtropical gyre of the South Atlantic Ocean, is one of the major Western Boundary Currents of the global ocean. Here, we present the first multiyear continuous daily time series of Brazil Current absolute volume transport obtained using 6+ years of observations from a line of four pressure-recording inverted echo sounders (PIES) deployed at 34.5°S. The array was augmented in December 2012 with two current meter-equipped PIES and in December 2013 with a moored Acoustic Doppler Current Profiler on the upper continental slope. The Brazil Current is bounded by the sea surface and the neutral density interface separating South Atlantic Central Water and Antarctic Intermediate Water, which is on average at a reference pressure of 628 ± 46 dbar, and it is confined west of 49.5°W. The Brazil Current has a mean strength of −14.0 ± 2.8 Sv (1 Sv ≡ 106 m3 s−1; negative indicates southward flow) with a temporal standard deviation of 8.8 Sv and peak-to-peak range from −41.7 to +20 Sv. About 80% of the absolute transport variance is concentrated at periods shorter than 150 days with a prominent peak at 100 days. The baroclinic component accounts for 85% of the absolute transport variance, but the barotropic variance is not negligible. The baroclinic and barotropic transports are uncorrelated, demonstrating the need to measure both transport components independently. Given the energetic high frequency transport variations, statistically significant seasonal to interannual variability and trends have yet to be detected.Fil: Chidichimo, María Paz. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Centre National de la Recherche Scientifique. Institut de Recherche pour le Developpement. Département Ecologie, Biodiversité et Fonctionnement des Ecosystèmes Continentaux; FranciaFil: Piola, Alberto Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Centre National de la Recherche Scientifique. Institut de Recherche pour le Developpement. Département Ecologie, Biodiversité et Fonctionnement des Ecosystèmes Continentaux; FranciaFil: Meinen, Christopher S.. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. National Ocean And Atmospheric Administration; Estados UnidosFil: Perez, Renellys. National Ocean And Atmospheric Administration; Estados UnidosFil: Campos, Edmo. Universidade de Sao Paulo; Brasil. American University Of Sharjah.; Emiratos Árabes UnidosFil: Dong, Shenfu. National Ocean And Atmospheric Administration; Estados UnidosFil: Lumpkin, Rick. National Ocean And Atmospheric Administration; Estados UnidosFil: Garzoli, S. L.. National Ocean And Atmospheric Administration; Estados UnidosAmerican Geophysical Union2021-04-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/154906Chidichimo, María Paz; Piola, Alberto Ricardo; Meinen, Christopher S.; Perez, Renellys; Campos, Edmo; et al.; Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S; American Geophysical Union; Journal of Geophysical Research: Oceans; 126; 5; 7-4-2021; 1-252169-9275CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1029/2020JC017146info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC017146info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:10:10Zoai:ri.conicet.gov.ar:11336/154906instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:10:10.911CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
title Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
spellingShingle Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
Chidichimo, María Paz
BRAZIL CURRENT
MERIDIONAL OVERTURNING CIRCULATION
OBSERVATIONS
TRANSPORT ARRAY
VARIABILITY
VOLUME TRANSPORT
title_short Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
title_full Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
title_fullStr Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
title_full_unstemmed Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
title_sort Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S
dc.creator.none.fl_str_mv Chidichimo, María Paz
Piola, Alberto Ricardo
Meinen, Christopher S.
Perez, Renellys
Campos, Edmo
Dong, Shenfu
Lumpkin, Rick
Garzoli, S. L.
author Chidichimo, María Paz
author_facet Chidichimo, María Paz
Piola, Alberto Ricardo
Meinen, Christopher S.
Perez, Renellys
Campos, Edmo
Dong, Shenfu
Lumpkin, Rick
Garzoli, S. L.
author_role author
author2 Piola, Alberto Ricardo
Meinen, Christopher S.
Perez, Renellys
Campos, Edmo
Dong, Shenfu
Lumpkin, Rick
Garzoli, S. L.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BRAZIL CURRENT
MERIDIONAL OVERTURNING CIRCULATION
OBSERVATIONS
TRANSPORT ARRAY
VARIABILITY
VOLUME TRANSPORT
topic BRAZIL CURRENT
MERIDIONAL OVERTURNING CIRCULATION
OBSERVATIONS
TRANSPORT ARRAY
VARIABILITY
VOLUME TRANSPORT
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Brazil Current, the western limb of the subtropical gyre of the South Atlantic Ocean, is one of the major Western Boundary Currents of the global ocean. Here, we present the first multiyear continuous daily time series of Brazil Current absolute volume transport obtained using 6+ years of observations from a line of four pressure-recording inverted echo sounders (PIES) deployed at 34.5°S. The array was augmented in December 2012 with two current meter-equipped PIES and in December 2013 with a moored Acoustic Doppler Current Profiler on the upper continental slope. The Brazil Current is bounded by the sea surface and the neutral density interface separating South Atlantic Central Water and Antarctic Intermediate Water, which is on average at a reference pressure of 628 ± 46 dbar, and it is confined west of 49.5°W. The Brazil Current has a mean strength of −14.0 ± 2.8 Sv (1 Sv ≡ 106 m3 s−1; negative indicates southward flow) with a temporal standard deviation of 8.8 Sv and peak-to-peak range from −41.7 to +20 Sv. About 80% of the absolute transport variance is concentrated at periods shorter than 150 days with a prominent peak at 100 days. The baroclinic component accounts for 85% of the absolute transport variance, but the barotropic variance is not negligible. The baroclinic and barotropic transports are uncorrelated, demonstrating the need to measure both transport components independently. Given the energetic high frequency transport variations, statistically significant seasonal to interannual variability and trends have yet to be detected.
Fil: Chidichimo, María Paz. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Centre National de la Recherche Scientifique. Institut de Recherche pour le Developpement. Département Ecologie, Biodiversité et Fonctionnement des Ecosystèmes Continentaux; Francia
Fil: Piola, Alberto Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina. Centre National de la Recherche Scientifique. Institut de Recherche pour le Developpement. Département Ecologie, Biodiversité et Fonctionnement des Ecosystèmes Continentaux; Francia
Fil: Meinen, Christopher S.. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Perez, Renellys. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Campos, Edmo. Universidade de Sao Paulo; Brasil. American University Of Sharjah.; Emiratos Árabes Unidos
Fil: Dong, Shenfu. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Lumpkin, Rick. National Ocean And Atmospheric Administration; Estados Unidos
Fil: Garzoli, S. L.. National Ocean And Atmospheric Administration; Estados Unidos
description The Brazil Current, the western limb of the subtropical gyre of the South Atlantic Ocean, is one of the major Western Boundary Currents of the global ocean. Here, we present the first multiyear continuous daily time series of Brazil Current absolute volume transport obtained using 6+ years of observations from a line of four pressure-recording inverted echo sounders (PIES) deployed at 34.5°S. The array was augmented in December 2012 with two current meter-equipped PIES and in December 2013 with a moored Acoustic Doppler Current Profiler on the upper continental slope. The Brazil Current is bounded by the sea surface and the neutral density interface separating South Atlantic Central Water and Antarctic Intermediate Water, which is on average at a reference pressure of 628 ± 46 dbar, and it is confined west of 49.5°W. The Brazil Current has a mean strength of −14.0 ± 2.8 Sv (1 Sv ≡ 106 m3 s−1; negative indicates southward flow) with a temporal standard deviation of 8.8 Sv and peak-to-peak range from −41.7 to +20 Sv. About 80% of the absolute transport variance is concentrated at periods shorter than 150 days with a prominent peak at 100 days. The baroclinic component accounts for 85% of the absolute transport variance, but the barotropic variance is not negligible. The baroclinic and barotropic transports are uncorrelated, demonstrating the need to measure both transport components independently. Given the energetic high frequency transport variations, statistically significant seasonal to interannual variability and trends have yet to be detected.
publishDate 2021
dc.date.none.fl_str_mv 2021-04-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/154906
Chidichimo, María Paz; Piola, Alberto Ricardo; Meinen, Christopher S.; Perez, Renellys; Campos, Edmo; et al.; Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S; American Geophysical Union; Journal of Geophysical Research: Oceans; 126; 5; 7-4-2021; 1-25
2169-9275
CONICET Digital
CONICET
url http://hdl.handle.net/11336/154906
identifier_str_mv Chidichimo, María Paz; Piola, Alberto Ricardo; Meinen, Christopher S.; Perez, Renellys; Campos, Edmo; et al.; Brazil Current volume transport variability during 2009-2015 from a longterm moored array at 34.5°S; American Geophysical Union; Journal of Geophysical Research: Oceans; 126; 5; 7-4-2021; 1-25
2169-9275
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1029/2020JC017146
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC017146
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613988042670080
score 13.070432

Publicaciones similares