Global climatology of near-inertial current characteristics from Lagrangian observations.
International audience Satellite-tracked surface drifter data from 1999-2006 are used to compute global climatology of inertial current characteristics at seasonal scales. The global mean near-inertial current amplitude at 15m depth is ∼10 cm s−1 corresponding to mixed-layer inertial energies of ∼30...
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ftmeteofrance:oai:HAL:hal-00765735v1 2024-05-19T07:48:56+00:00 Global climatology of near-inertial current characteristics from Lagrangian observations. Chaigneau, Alexis Pizarro, Oscar Rojas, Winston Echanges Côte-Large (ECOLA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Centro de Investigación Oceanográfica en el Pacífico Sur Oriental (COPAS) Universidad de Concepción - University of Concepcion Chile 2008 https://hal.science/hal-00765735 https://hal.science/hal-00765735/document https://hal.science/hal-00765735/file/grl24642.pdf https://doi.org/10.1029/2008GL034060 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL034060 hal-00765735 https://hal.science/hal-00765735 https://hal.science/hal-00765735/document https://hal.science/hal-00765735/file/grl24642.pdf doi:10.1029/2008GL034060 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00765735 Geophysical Research Letters, 2008, 35 (L13603), pp.5. ⟨10.1029/2008GL034060⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2008 ftmeteofrance https://doi.org/10.1029/2008GL034060 2024-04-25T00:45:50Z International audience Satellite-tracked surface drifter data from 1999-2006 are used to compute global climatology of inertial current characteristics at seasonal scales. The global mean near-inertial current amplitude at 15m depth is ∼10 cm s−1 corresponding to mixed-layer inertial energies of ∼300 J m−2. The Southern Ocean and the western North Pacific and Atlantic oceans are the most energetic in the near-inertial frequency band, whereas weaker inertial activity is observed in the subtropical and eastern boundary regions. In every ocean basin, inertial activity is higher during fall and winter, associated with maximum storms activity and deeper mixed-layers. This study also shows that the mixed-layer model developed by R. T. Pollard and R. C. Millard (1970) and forced by the QSCAT/NCEP blended wind product is too energetic in the tropics and not enough at high latitudes. These discrepancies could question the previous estimates of the wind work to inertial motions based on those simulations. Article in Journal/Newspaper Southern Ocean Météo-France: HAL Geophysical Research Letters 35 13 |
institution |
Open Polar |
collection |
Météo-France: HAL |
op_collection_id |
ftmeteofrance |
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 Chaigneau, Alexis Pizarro, Oscar Rojas, Winston Global climatology of near-inertial current characteristics from Lagrangian observations. |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Satellite-tracked surface drifter data from 1999-2006 are used to compute global climatology of inertial current characteristics at seasonal scales. The global mean near-inertial current amplitude at 15m depth is ∼10 cm s−1 corresponding to mixed-layer inertial energies of ∼300 J m−2. The Southern Ocean and the western North Pacific and Atlantic oceans are the most energetic in the near-inertial frequency band, whereas weaker inertial activity is observed in the subtropical and eastern boundary regions. In every ocean basin, inertial activity is higher during fall and winter, associated with maximum storms activity and deeper mixed-layers. This study also shows that the mixed-layer model developed by R. T. Pollard and R. C. Millard (1970) and forced by the QSCAT/NCEP blended wind product is too energetic in the tropics and not enough at high latitudes. These discrepancies could question the previous estimates of the wind work to inertial motions based on those simulations. |
author2 |
Echanges Côte-Large (ECOLA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Centro de Investigación Oceanográfica en el Pacífico Sur Oriental (COPAS) Universidad de Concepción - University of Concepcion Chile |
format |
Article in Journal/Newspaper |
author |
Chaigneau, Alexis Pizarro, Oscar Rojas, Winston |
author_facet |
Chaigneau, Alexis Pizarro, Oscar Rojas, Winston |
author_sort |
Chaigneau, Alexis |
title |
Global climatology of near-inertial current characteristics from Lagrangian observations. |
title_short |
Global climatology of near-inertial current characteristics from Lagrangian observations. |
title_full |
Global climatology of near-inertial current characteristics from Lagrangian observations. |
title_fullStr |
Global climatology of near-inertial current characteristics from Lagrangian observations. |
title_full_unstemmed |
Global climatology of near-inertial current characteristics from Lagrangian observations. |
title_sort |
global climatology of near-inertial current characteristics from lagrangian observations. |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00765735 https://hal.science/hal-00765735/document https://hal.science/hal-00765735/file/grl24642.pdf https://doi.org/10.1029/2008GL034060 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00765735 Geophysical Research Letters, 2008, 35 (L13603), pp.5. ⟨10.1029/2008GL034060⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL034060 hal-00765735 https://hal.science/hal-00765735 https://hal.science/hal-00765735/document https://hal.science/hal-00765735/file/grl24642.pdf doi:10.1029/2008GL034060 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2008GL034060 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
13 |
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1799467332486037504 |