The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis

Downstream of Drake Passage, the northern branches of the Antarctic Circumpolar Current, the Polar Front and the Subantarctic Front, veer northward and the latter forms the Malvinas Current (MC). The MC flows along the continental slope up to 38°S where it loops southward as the Malvinas Return Flow...

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Published in:Journal of Geophysical Research: Oceans
Main Authors: Artana, Camila, Lellouche, Jean-Michel, Sennéchael, Nathalie, Provost, Christine
Other Authors: Austral, Boréal et Carbone (ABC), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Mercator Océan, Société Civile CNRS Ifremer IRD Météo-France SHOM
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2018
Subjects:
Online Access:https://hal.archives-ouvertes.fr/hal-02190735
https://hal.archives-ouvertes.fr/hal-02190735/document
https://hal.archives-ouvertes.fr/hal-02190735/file/Artana%20et%20al.%20-%202018%20-%20The%20Open-Ocean%20Side%20of%20the%20Malvinas%20Current%20in%20Arg.pdf
https://doi.org/10.1029/2018JC014528
id ftccsdartic:oai:HAL:hal-02190735v1
record_format openpolar
institution Open Polar
collection Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
op_collection_id ftccsdartic
language English
topic [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
spellingShingle [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
Artana, Camila
Lellouche, Jean-Michel
Sennéchael, Nathalie
Provost, Christine
The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis
topic_facet [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
description Downstream of Drake Passage, the northern branches of the Antarctic Circumpolar Current, the Polar Front and the Subantarctic Front, veer northward and the latter forms the Malvinas Current (MC). The MC flows along the continental slope up to 38°S where it loops southward as the Malvinas Return Flow. Using 24 years of Mercator Ocean physical reanalysis outputs and Argo float data, we explore the open‐ocean side of the MC. We observe the occurrence of blocking events at 49°S, a region where the MC is exposed to the warm and salty anticyclonic anomalies propagating westward along the steep slope of the Malvinas Escarpment. During these events, the MC is cut off from its source, and the MC transport is considerably reduced at 49°S. The open‐ocean side of the MC is regularly supplied with cold polar waters from the Polar front.The polar waters accumulate and recirculate between the MC and the Malvinas Return Flow. The water characteristics of the recirculation region change over time. The recirculation region hosts significantly lighter and fresher waters during the period 1997–2003 compared with prior and later years. The 1997–2003 salinity minimum in the recirculation region corresponds to a period with reduced feeding events at 49°S.
author2 Austral, Boréal et Carbone (ABC)
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN)
Institut Pierre-Simon-Laplace (IPSL (FR_636))
École normale supérieure - Paris (ENS Paris)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636))
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)
Mercator Océan
Société Civile CNRS Ifremer IRD Météo-France SHOM
format Article in Journal/Newspaper
author Artana, Camila
Lellouche, Jean-Michel
Sennéchael, Nathalie
Provost, Christine
author_facet Artana, Camila
Lellouche, Jean-Michel
Sennéchael, Nathalie
Provost, Christine
author_sort Artana, Camila
title The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis
title_short The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis
title_full The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis
title_fullStr The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis
title_full_unstemmed The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis
title_sort open-ocean side of the malvinas current in argo floats and 24 years of mercator ocean high-resolution (1/12) physical reanalysis
publisher HAL CCSD
publishDate 2018
url https://hal.archives-ouvertes.fr/hal-02190735
https://hal.archives-ouvertes.fr/hal-02190735/document
https://hal.archives-ouvertes.fr/hal-02190735/file/Artana%20et%20al.%20-%202018%20-%20The%20Open-Ocean%20Side%20of%20the%20Malvinas%20Current%20in%20Arg.pdf
https://doi.org/10.1029/2018JC014528
long_lat ENVELOPE(-45.000,-45.000,-50.000,-50.000)
geographic Antarctic
Drake Passage
Malvinas Escarpment
The Antarctic
geographic_facet Antarctic
Drake Passage
Malvinas Escarpment
The Antarctic
genre Antarc*
Antarctic
Drake Passage
genre_facet Antarc*
Antarctic
Drake Passage
op_source ISSN: 2169-9275
EISSN: 2169-9291
Journal of Geophysical Research. Oceans
https://hal.archives-ouvertes.fr/hal-02190735
Journal of Geophysical Research. Oceans, Wiley-Blackwell, 2018, 123 (11), pp.8489-8507. ⟨10.1029/2018JC014528⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JC014528
hal-02190735
https://hal.archives-ouvertes.fr/hal-02190735
https://hal.archives-ouvertes.fr/hal-02190735/document
https://hal.archives-ouvertes.fr/hal-02190735/file/Artana%20et%20al.%20-%202018%20-%20The%20Open-Ocean%20Side%20of%20the%20Malvinas%20Current%20in%20Arg.pdf
doi:10.1029/2018JC014528
WOS: 000453907000044
op_rights info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.1029/2018JC014528
container_title Journal of Geophysical Research: Oceans
container_volume 123
container_issue 11
container_start_page 8489
op_container_end_page 8507
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spelling ftccsdartic:oai:HAL:hal-02190735v1 2023-05-15T13:37:57+02:00 The Open-Ocean Side of the Malvinas Current in Argo Floats and 24 Years of Mercator Ocean High-Resolution (1/12) Physical Reanalysis Artana, Camila Lellouche, Jean-Michel Sennéchael, Nathalie Provost, Christine Austral, Boréal et Carbone (ABC) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Mercator Océan Société Civile CNRS Ifremer IRD Météo-France SHOM 2018 https://hal.archives-ouvertes.fr/hal-02190735 https://hal.archives-ouvertes.fr/hal-02190735/document https://hal.archives-ouvertes.fr/hal-02190735/file/Artana%20et%20al.%20-%202018%20-%20The%20Open-Ocean%20Side%20of%20the%20Malvinas%20Current%20in%20Arg.pdf https://doi.org/10.1029/2018JC014528 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JC014528 hal-02190735 https://hal.archives-ouvertes.fr/hal-02190735 https://hal.archives-ouvertes.fr/hal-02190735/document https://hal.archives-ouvertes.fr/hal-02190735/file/Artana%20et%20al.%20-%202018%20-%20The%20Open-Ocean%20Side%20of%20the%20Malvinas%20Current%20in%20Arg.pdf doi:10.1029/2018JC014528 WOS: 000453907000044 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.archives-ouvertes.fr/hal-02190735 Journal of Geophysical Research. Oceans, Wiley-Blackwell, 2018, 123 (11), pp.8489-8507. ⟨10.1029/2018JC014528⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.1029/2018JC014528 2021-12-19T01:48:00Z Downstream of Drake Passage, the northern branches of the Antarctic Circumpolar Current, the Polar Front and the Subantarctic Front, veer northward and the latter forms the Malvinas Current (MC). The MC flows along the continental slope up to 38°S where it loops southward as the Malvinas Return Flow. Using 24 years of Mercator Ocean physical reanalysis outputs and Argo float data, we explore the open‐ocean side of the MC. We observe the occurrence of blocking events at 49°S, a region where the MC is exposed to the warm and salty anticyclonic anomalies propagating westward along the steep slope of the Malvinas Escarpment. During these events, the MC is cut off from its source, and the MC transport is considerably reduced at 49°S. The open‐ocean side of the MC is regularly supplied with cold polar waters from the Polar front.The polar waters accumulate and recirculate between the MC and the Malvinas Return Flow. The water characteristics of the recirculation region change over time. The recirculation region hosts significantly lighter and fresher waters during the period 1997–2003 compared with prior and later years. The 1997–2003 salinity minimum in the recirculation region corresponds to a period with reduced feeding events at 49°S. Article in Journal/Newspaper Antarc* Antarctic Drake Passage Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Drake Passage Malvinas Escarpment ENVELOPE(-45.000,-45.000,-50.000,-50.000) The Antarctic Journal of Geophysical Research: Oceans 123 11 8489 8507