Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau
International audience The location of the Antarctic Polar Front (PF) is mapped in the Southern Indian Ocean by decomposing the shape of temperature and salinity profiles into vertical modes using a functional Principal Component Analysis. We define the PF as the northernmost minimum of temperature...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2018
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Subjects: | |
Online Access: | https://amu.hal.science/hal-02024254 https://amu.hal.science/hal-02024254v1/document https://amu.hal.science/hal-02024254v1/file/2018GL079614.pdf https://doi.org/10.1029/2018GL079614 |
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ftuniparissaclay:oai:HAL:hal-02024254v1 |
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openpolar |
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Open Polar |
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Archives ouvertes de Paris-Saclay |
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ftuniparissaclay |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Pauthenet, Etienne Roquet, Fabien Madec, Gurvan Guinet, Christophe Hindell, Mark A. Mcmahon, Clive R. Harcourt, Robert G. Nerini, David Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience The location of the Antarctic Polar Front (PF) is mapped in the Southern Indian Ocean by decomposing the shape of temperature and salinity profiles into vertical modes using a functional Principal Component Analysis. We define the PF as the northernmost minimum of temperature at the subsurface andrepresent it as a linear combination of the first three modes. This method is applied on an ocean reanalysis data set and on in situ observations, revealing a seasonal variability of the PF latitudinal position that is most pronounced between the Conrad Rise and the Kerguelen Plateau. This shift coincides with variations in the transport across the Northern Kerguelen Plateau. We suggest that seasonal changes of the upper stratification may drive the observed variability of the PF, with potentially large implications for thepathways and residence time of water masses over the plateau and the phytoplankton bloom extending southeast of the Kerguelen Islands. |
author2 |
Department of Meteorology Stockholm (MISU) Stockholm University Department of Marine Sciences Gothenburg Göteborgs Universitet = University of Gothenburg (GU) Nucleus for European Modeling of the Ocean (NEMO R&D) 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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart (UTAS) Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) University of Sydney Institute of Marine Science (USIMS) The University of Sydney Dept of Biological Sciences Australia Macquarie University Sydney Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Pauthenet, Etienne Roquet, Fabien Madec, Gurvan Guinet, Christophe Hindell, Mark A. Mcmahon, Clive R. Harcourt, Robert G. Nerini, David |
author_facet |
Pauthenet, Etienne Roquet, Fabien Madec, Gurvan Guinet, Christophe Hindell, Mark A. Mcmahon, Clive R. Harcourt, Robert G. Nerini, David |
author_sort |
Pauthenet, Etienne |
title |
Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau |
title_short |
Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau |
title_full |
Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau |
title_fullStr |
Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau |
title_full_unstemmed |
Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau |
title_sort |
seasonal meandering of the polar front upstream of the kerguelen plateau |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://amu.hal.science/hal-02024254 https://amu.hal.science/hal-02024254v1/document https://amu.hal.science/hal-02024254v1/file/2018GL079614.pdf https://doi.org/10.1029/2018GL079614 |
long_lat |
ENVELOPE(41.000,41.000,-53.000,-53.000) |
geographic |
Antarctic The Antarctic Kerguelen Kerguelen Islands Indian Conrad Rise |
geographic_facet |
Antarctic The Antarctic Kerguelen Kerguelen Islands Indian Conrad Rise |
genre |
Antarc* Antarctic Kerguelen Islands |
genre_facet |
Antarc* Antarctic Kerguelen Islands |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://amu.hal.science/hal-02024254 Geophysical Research Letters, 2018, 45 (18), pp.9774-9781. ⟨10.1029/2018GL079614⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018GL079614 doi:10.1029/2018GL079614 WOS: 000447761300049 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2018GL079614 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
18 |
container_start_page |
9774 |
op_container_end_page |
9781 |
_version_ |
1812182387255148544 |
spelling |
ftuniparissaclay:oai:HAL:hal-02024254v1 2024-10-06T13:43:56+00:00 Seasonal Meandering of the Polar Front Upstream of the Kerguelen Plateau Pauthenet, Etienne Roquet, Fabien Madec, Gurvan Guinet, Christophe Hindell, Mark A. Mcmahon, Clive R. Harcourt, Robert G. Nerini, David Department of Meteorology Stockholm (MISU) Stockholm University Department of Marine Sciences Gothenburg Göteborgs Universitet = University of Gothenburg (GU) Nucleus for European Modeling of the Ocean (NEMO R&D) 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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart (UTAS) Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) University of Sydney Institute of Marine Science (USIMS) The University of Sydney Dept of Biological Sciences Australia Macquarie University Sydney Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) 2018-09-28 https://amu.hal.science/hal-02024254 https://amu.hal.science/hal-02024254v1/document https://amu.hal.science/hal-02024254v1/file/2018GL079614.pdf https://doi.org/10.1029/2018GL079614 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2018GL079614 doi:10.1029/2018GL079614 WOS: 000447761300049 http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://amu.hal.science/hal-02024254 Geophysical Research Letters, 2018, 45 (18), pp.9774-9781. ⟨10.1029/2018GL079614⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2018 ftuniparissaclay https://doi.org/10.1029/2018GL079614 2024-09-26T23:49:48Z International audience The location of the Antarctic Polar Front (PF) is mapped in the Southern Indian Ocean by decomposing the shape of temperature and salinity profiles into vertical modes using a functional Principal Component Analysis. We define the PF as the northernmost minimum of temperature at the subsurface andrepresent it as a linear combination of the first three modes. This method is applied on an ocean reanalysis data set and on in situ observations, revealing a seasonal variability of the PF latitudinal position that is most pronounced between the Conrad Rise and the Kerguelen Plateau. This shift coincides with variations in the transport across the Northern Kerguelen Plateau. We suggest that seasonal changes of the upper stratification may drive the observed variability of the PF, with potentially large implications for thepathways and residence time of water masses over the plateau and the phytoplankton bloom extending southeast of the Kerguelen Islands. Article in Journal/Newspaper Antarc* Antarctic Kerguelen Islands Archives ouvertes de Paris-Saclay Antarctic The Antarctic Kerguelen Kerguelen Islands Indian Conrad Rise ENVELOPE(41.000,41.000,-53.000,-53.000) Geophysical Research Letters 45 18 9774 9781 |