New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean
International audience In spite of continous improvements of ocean wave models in the last decades, results still show large in certain condition, in particular in strongly forced conditions, as encountered in the Southern Ocean, where strong westerly winds generate some of the fiercest waves on Ear...
Published in: | Geophysical Research Letters |
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Online Access: | https://insu.hal.science/insu-03008401 https://insu.hal.science/insu-03008401v3/document https://insu.hal.science/insu-03008401v3/file/2020GL091187.pdf https://doi.org/10.1029/2020GL091187 |
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ftsorbonneuniv:oai:HAL:insu-03008401v3 2024-06-23T07:56:54+00:00 New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean Aouf, Lotfi Hauser, Danièle Bertrand, Chapron Toffoli, A. Tourrain, C. Peureux, C. Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) 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)-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-Centre National de la Recherche Scientifique (CNRS) SPACE - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) University of Melbourne Centre National d'Études Spatiales Toulouse (CNES) Collecte Localisation Satellites (CLS) 2021 https://insu.hal.science/insu-03008401 https://insu.hal.science/insu-03008401v3/document https://insu.hal.science/insu-03008401v3/file/2020GL091187.pdf https://doi.org/10.1029/2020GL091187 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GL091187 insu-03008401 https://insu.hal.science/insu-03008401 https://insu.hal.science/insu-03008401v3/document https://insu.hal.science/insu-03008401v3/file/2020GL091187.pdf doi:10.1029/2020GL091187 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03008401 Geophysical Research Letters, 2021, 48 (5), pp.e2020GL091187. ⟨10.1029/2020GL091187⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2021 ftsorbonneuniv https://doi.org/10.1029/2020GL091187 2024-05-30T23:46:44Z International audience In spite of continous improvements of ocean wave models in the last decades, results still show large in certain condition, in particular in strongly forced conditions, as encountered in the Southern Ocean, where strong westerly winds generate some of the fiercest waves on Earth in almost unlimited fetch conditions. The newly launched Chinese-French Oceanography Satellite (CFOSAT) provides directional spectra of ocean waves for both wind seas and swells. Compared to Synthetic Aperture Radar (SAR), it resolves shorter wavelengths, which dominates in non-fully developed wind waves. Here we demonstrate that the assimilation of the wave number components from CFOSAT spectra produce more accurate predictions of wave growth than assimilation of significant wave height alone and results in a notable reduction of model bias in the Southern Ocean, especially in the Pacific Ocean sector. In addition results also indicate a downward shift of the wave age consistent with theoretical wave growth curves. Article in Journal/Newspaper Southern Ocean HAL Sorbonne Université Pacific Southern Ocean Geophysical Research Letters 48 5 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Aouf, Lotfi Hauser, Danièle Bertrand, Chapron Toffoli, A. Tourrain, C. Peureux, C. New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience In spite of continous improvements of ocean wave models in the last decades, results still show large in certain condition, in particular in strongly forced conditions, as encountered in the Southern Ocean, where strong westerly winds generate some of the fiercest waves on Earth in almost unlimited fetch conditions. The newly launched Chinese-French Oceanography Satellite (CFOSAT) provides directional spectra of ocean waves for both wind seas and swells. Compared to Synthetic Aperture Radar (SAR), it resolves shorter wavelengths, which dominates in non-fully developed wind waves. Here we demonstrate that the assimilation of the wave number components from CFOSAT spectra produce more accurate predictions of wave growth than assimilation of significant wave height alone and results in a notable reduction of model bias in the Southern Ocean, especially in the Pacific Ocean sector. In addition results also indicate a downward shift of the wave age consistent with theoretical wave growth curves. |
author2 |
Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) 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)-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-Centre National de la Recherche Scientifique (CNRS) SPACE - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) University of Melbourne Centre National d'Études Spatiales Toulouse (CNES) Collecte Localisation Satellites (CLS) |
format |
Article in Journal/Newspaper |
author |
Aouf, Lotfi Hauser, Danièle Bertrand, Chapron Toffoli, A. Tourrain, C. Peureux, C. |
author_facet |
Aouf, Lotfi Hauser, Danièle Bertrand, Chapron Toffoli, A. Tourrain, C. Peureux, C. |
author_sort |
Aouf, Lotfi |
title |
New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean |
title_short |
New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean |
title_full |
New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean |
title_fullStr |
New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean |
title_full_unstemmed |
New directional wave satellite observations : Towards improved wave forecasts and climate description in Southern Ocean |
title_sort |
new directional wave satellite observations : towards improved wave forecasts and climate description in southern ocean |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03008401 https://insu.hal.science/insu-03008401v3/document https://insu.hal.science/insu-03008401v3/file/2020GL091187.pdf https://doi.org/10.1029/2020GL091187 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-03008401 Geophysical Research Letters, 2021, 48 (5), pp.e2020GL091187. ⟨10.1029/2020GL091187⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020GL091187 insu-03008401 https://insu.hal.science/insu-03008401 https://insu.hal.science/insu-03008401v3/document https://insu.hal.science/insu-03008401v3/file/2020GL091187.pdf doi:10.1029/2020GL091187 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020GL091187 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
5 |
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1802650288502341632 |