The dynamics of Southern Ocean storm tracks
International audience The mechanisms that initiate and maintain oceanic “storm tracks” (regions of anomalously high eddy kinetic energy) are studied in a wind-driven, isopycnal, primitive equation model with idealized bottom topography. Storm tracks are found downstream of the topography in regions...
Published in: | Journal of Physical Oceanography |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099/document https://hal.sorbonne-universite.fr/hal-01837099/file/chap1.pdf https://doi.org/10.1175/JPO-D-14-0075.1 |
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ftepunivpsaclay:oai:HAL:hal-01837099v1 |
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openpolar |
institution |
Open Polar |
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École Polytechnique, Université Paris-Saclay: HAL |
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ftepunivpsaclay |
language |
English |
topic |
Geographic location/entity Southern Ocean Circulation/ Dynamics Eddies Nonlinear dynamics Ocean dynamics Stationary waves Waves oceanic [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
Geographic location/entity Southern Ocean Circulation/ Dynamics Eddies Nonlinear dynamics Ocean dynamics Stationary waves Waves oceanic [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Chapman, Christopher Hogg, Andrew, Mcc Kiss, Andrew Rintoul, Stephen The dynamics of Southern Ocean storm tracks |
topic_facet |
Geographic location/entity Southern Ocean Circulation/ Dynamics Eddies Nonlinear dynamics Ocean dynamics Stationary waves Waves oceanic [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience The mechanisms that initiate and maintain oceanic “storm tracks” (regions of anomalously high eddy kinetic energy) are studied in a wind-driven, isopycnal, primitive equation model with idealized bottom topography. Storm tracks are found downstream of the topography in regions strongly influenced by a large-scale stationary meander that is generated by the interaction between the background mean flow and the topography. In oceanic storm tracks the length scale of the stationary meander differs from that of the transient eddies, a point of distinction from the atmospheric storm tracks. When the zonal length and height of the topography are varied, the storm-track intensity is largely unchanged and the downstream storm-track length varies only weakly. The dynamics of the storm track in this idealized configuration are investigated using a wave activity flux (related to the Eliassen–Palm flux and eddy energy budgets). It is found that vertical fluxes of wave activity (which correspond to eddy growth by baroclinic conversion) are localized to the region influenced by the standing meander. Farther downstream, organized horizontal wave activity fluxes (which indicate eddy energy fluxes) are found. A mechanism for the development of oceanic storm tracks is proposed: the standing meander initiates localized conversion of energy from the mean field to the eddy field, while the storm track develops downstream of the initial baroclinic growth through the ageostrophic flux of Montgomery potential. Finally, the implications of this analysis for the parameterization and prediction of storm tracks in ocean models are discussed. |
author2 |
Research School of Earth Sciences ANU, Canberra (RSES) ANU College of Science Canberra Australian National University (ANU)-Australian National University (ANU) Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) 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) University of New South Wales Canberra Campus (UNSW) CSIRO Wealth from Oceans Flagship Australian Commonwealth Government CSIRO Wealth from Oceans Flagship scholarship Australian Research Council Australian Governments Cooperative Research Centre's Program, through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC) Department of Environment, Bureau of Meteorology CSIRO through the Australian Climate Change Science Program |
format |
Article in Journal/Newspaper |
author |
Chapman, Christopher Hogg, Andrew, Mcc Kiss, Andrew Rintoul, Stephen |
author_facet |
Chapman, Christopher Hogg, Andrew, Mcc Kiss, Andrew Rintoul, Stephen |
author_sort |
Chapman, Christopher |
title |
The dynamics of Southern Ocean storm tracks |
title_short |
The dynamics of Southern Ocean storm tracks |
title_full |
The dynamics of Southern Ocean storm tracks |
title_fullStr |
The dynamics of Southern Ocean storm tracks |
title_full_unstemmed |
The dynamics of Southern Ocean storm tracks |
title_sort |
dynamics of southern ocean storm tracks |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.sorbonne-universite.fr/hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099/document https://hal.sorbonne-universite.fr/hal-01837099/file/chap1.pdf https://doi.org/10.1175/JPO-D-14-0075.1 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0022-3670 EISSN: 1520-0485 Journal of Physical Oceanography https://hal.sorbonne-universite.fr/hal-01837099 Journal of Physical Oceanography, 2015, 45 (3), pp.884 - 903. ⟨10.1175/JPO-D-14-0075.1⟩ https://journals.ametsoc.org/view/journals/phoc/45/3/jpo-d-14-0075.1.xml |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/JPO-D-14-0075.1 hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099/document https://hal.sorbonne-universite.fr/hal-01837099/file/chap1.pdf doi:10.1175/JPO-D-14-0075.1 WOS: 000350984900018 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JPO-D-14-0075.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
45 |
container_issue |
3 |
container_start_page |
884 |
op_container_end_page |
903 |
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1799467302336331776 |
spelling |
ftepunivpsaclay:oai:HAL:hal-01837099v1 2024-05-19T07:48:55+00:00 The dynamics of Southern Ocean storm tracks Chapman, Christopher Hogg, Andrew, Mcc Kiss, Andrew Rintoul, Stephen Research School of Earth Sciences ANU, Canberra (RSES) ANU College of Science Canberra Australian National University (ANU)-Australian National University (ANU) Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) 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) University of New South Wales Canberra Campus (UNSW) CSIRO Wealth from Oceans Flagship Australian Commonwealth Government CSIRO Wealth from Oceans Flagship scholarship Australian Research Council Australian Governments Cooperative Research Centre's Program, through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC) Department of Environment, Bureau of Meteorology CSIRO through the Australian Climate Change Science Program 2015-03 https://hal.sorbonne-universite.fr/hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099/document https://hal.sorbonne-universite.fr/hal-01837099/file/chap1.pdf https://doi.org/10.1175/JPO-D-14-0075.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JPO-D-14-0075.1 hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099 https://hal.sorbonne-universite.fr/hal-01837099/document https://hal.sorbonne-universite.fr/hal-01837099/file/chap1.pdf doi:10.1175/JPO-D-14-0075.1 WOS: 000350984900018 info:eu-repo/semantics/OpenAccess ISSN: 0022-3670 EISSN: 1520-0485 Journal of Physical Oceanography https://hal.sorbonne-universite.fr/hal-01837099 Journal of Physical Oceanography, 2015, 45 (3), pp.884 - 903. ⟨10.1175/JPO-D-14-0075.1⟩ https://journals.ametsoc.org/view/journals/phoc/45/3/jpo-d-14-0075.1.xml Geographic location/entity Southern Ocean Circulation/ Dynamics Eddies Nonlinear dynamics Ocean dynamics Stationary waves Waves oceanic [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2015 ftepunivpsaclay https://doi.org/10.1175/JPO-D-14-0075.1 2024-04-25T00:40:38Z International audience The mechanisms that initiate and maintain oceanic “storm tracks” (regions of anomalously high eddy kinetic energy) are studied in a wind-driven, isopycnal, primitive equation model with idealized bottom topography. Storm tracks are found downstream of the topography in regions strongly influenced by a large-scale stationary meander that is generated by the interaction between the background mean flow and the topography. In oceanic storm tracks the length scale of the stationary meander differs from that of the transient eddies, a point of distinction from the atmospheric storm tracks. When the zonal length and height of the topography are varied, the storm-track intensity is largely unchanged and the downstream storm-track length varies only weakly. The dynamics of the storm track in this idealized configuration are investigated using a wave activity flux (related to the Eliassen–Palm flux and eddy energy budgets). It is found that vertical fluxes of wave activity (which correspond to eddy growth by baroclinic conversion) are localized to the region influenced by the standing meander. Farther downstream, organized horizontal wave activity fluxes (which indicate eddy energy fluxes) are found. A mechanism for the development of oceanic storm tracks is proposed: the standing meander initiates localized conversion of energy from the mean field to the eddy field, while the storm track develops downstream of the initial baroclinic growth through the ageostrophic flux of Montgomery potential. Finally, the implications of this analysis for the parameterization and prediction of storm tracks in ocean models are discussed. Article in Journal/Newspaper Southern Ocean École Polytechnique, Université Paris-Saclay: HAL Journal of Physical Oceanography 45 3 884 903 |