Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative
International audience We analyzed physical oceanic parameters gathered by a mooring array at mesoscale spatial sampling deployed in the Argentine Basin within the Ocean Observatory Initiative, a National Science Foundation major research facility. The array was maintained at 42 ∘ S and 42 ∘ W, a hi...
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ftccsdartic:oai:HAL:insu-04188268v1 2023-12-17T10:19:24+01:00 Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative Artana, Camila Provost, Christine Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) 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 Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) 2023 https://insu.hal.science/insu-04188268 https://insu.hal.science/insu-04188268/document https://insu.hal.science/insu-04188268/file/os-19-953-2023.pdf https://doi.org/10.5194/os-19-953-2023 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/os-19-953-2023 insu-04188268 https://insu.hal.science/insu-04188268 https://insu.hal.science/insu-04188268/document https://insu.hal.science/insu-04188268/file/os-19-953-2023.pdf BIBCODE: 2023OcSci.19.953A doi:10.5194/os-19-953-2023 WOS: 001021534600001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://insu.hal.science/insu-04188268 Ocean Science, 2023, 19, pp.953-971. ⟨10.5194/os-19-953-2023⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.5194/os-19-953-2023 2023-11-18T23:44:56Z International audience We analyzed physical oceanic parameters gathered by a mooring array at mesoscale spatial sampling deployed in the Argentine Basin within the Ocean Observatory Initiative, a National Science Foundation major research facility. The array was maintained at 42 ∘ S and 42 ∘ W, a historically sparsely sampled region with small ocean variability, over 34 months from March 2015 to January 2018. The data documented four anticyclonic extreme-structure events in 2016. The four anticyclonic structures had different characteristics (size, vertical extension, origin, lifetime and Rossby number). They all featured near-inertial waves (NIWs) trapped at depth and low Richardson values well below the mixed layer. Low Richardson values suggest favorable conditions for mixing. The anticyclonic features likely act as mixing structures at the pycnocline, bringing heat and salt from the South Atlantic Central Water to the Antarctic Intermediate Waters. The intense structures were unique in the 29-year-long satellite altimetry record at the mooring site. The Argentine Basin is populated with many anticyclones, and mixing associated with trapped NIWs probably plays an important role in setting up the upper-water-mass characteristics in the basin. Article in Journal/Newspaper Antarc* Antarctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic The Antarctic Argentine Ocean Science 19 3 953 971 |
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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]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Artana, Camila Provost, Christine Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience We analyzed physical oceanic parameters gathered by a mooring array at mesoscale spatial sampling deployed in the Argentine Basin within the Ocean Observatory Initiative, a National Science Foundation major research facility. The array was maintained at 42 ∘ S and 42 ∘ W, a historically sparsely sampled region with small ocean variability, over 34 months from March 2015 to January 2018. The data documented four anticyclonic extreme-structure events in 2016. The four anticyclonic structures had different characteristics (size, vertical extension, origin, lifetime and Rossby number). They all featured near-inertial waves (NIWs) trapped at depth and low Richardson values well below the mixed layer. Low Richardson values suggest favorable conditions for mixing. The anticyclonic features likely act as mixing structures at the pycnocline, bringing heat and salt from the South Atlantic Central Water to the Antarctic Intermediate Waters. The intense structures were unique in the 29-year-long satellite altimetry record at the mooring site. The Argentine Basin is populated with many anticyclones, and mixing associated with trapped NIWs probably plays an important role in setting up the upper-water-mass characteristics in the basin. |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) 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 Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
format |
Article in Journal/Newspaper |
author |
Artana, Camila Provost, Christine |
author_facet |
Artana, Camila Provost, Christine |
author_sort |
Artana, Camila |
title |
Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative |
title_short |
Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative |
title_full |
Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative |
title_fullStr |
Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative |
title_full_unstemmed |
Intense anticyclones at the global Argentine Basin array of the Ocean Observatory Initiative |
title_sort |
intense anticyclones at the global argentine basin array of the ocean observatory initiative |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://insu.hal.science/insu-04188268 https://insu.hal.science/insu-04188268/document https://insu.hal.science/insu-04188268/file/os-19-953-2023.pdf https://doi.org/10.5194/os-19-953-2023 |
geographic |
Antarctic The Antarctic Argentine |
geographic_facet |
Antarctic The Antarctic Argentine |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://insu.hal.science/insu-04188268 Ocean Science, 2023, 19, pp.953-971. ⟨10.5194/os-19-953-2023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/os-19-953-2023 insu-04188268 https://insu.hal.science/insu-04188268 https://insu.hal.science/insu-04188268/document https://insu.hal.science/insu-04188268/file/os-19-953-2023.pdf BIBCODE: 2023OcSci.19.953A doi:10.5194/os-19-953-2023 WOS: 001021534600001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/os-19-953-2023 |
container_title |
Ocean Science |
container_volume |
19 |
container_issue |
3 |
container_start_page |
953 |
op_container_end_page |
971 |
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1785583545208537088 |