Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015
International audience Satellite altimetry data have revealed a global mean sea level rise of 3.1 mm/yr since 1993 with large regional sea level variability. These remote data highlight complex structures especially in strongly eddying regions. A recent study showed that over 38% of the global ocean...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://insu.hal.science/insu-03215005 https://insu.hal.science/insu-03215005/document https://insu.hal.science/insu-03215005/file/Carret2021.pdf https://doi.org/10.1029/2020JC017123 |
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ftmeteofrance:oai:HAL:insu-03215005v1 |
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Open Polar |
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Météo-France: HAL |
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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 Carret, Alice Llovel, W. Penduff, Thierry Molines, Jean‐marc Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Satellite altimetry data have revealed a global mean sea level rise of 3.1 mm/yr since 1993 with large regional sea level variability. These remote data highlight complex structures especially in strongly eddying regions. A recent study showed that over 38% of the global ocean area, the chaotic variability may hinder the attribution to the atmospheric forcing of regional sea level trends from 1993 to 2015. This study aims to complement this work by focusing on the atmospherically forced and chaotic interannual variability of regional sea level and its components. At interannual time scales, variability can hamper the detection of regional sea level trends. A global 1/4° ocean/sea‐ice 50‐member ensemble simulation is analyzed to disentangle the imprints of the atmospheric forcing and of the chaotic ocean variability on the interannual variability of regional sea level and of its steric and manometric components over 1993–2015. The atmospherically forced and chaotic interannual variabilities of sea level mainly have a steric origin, except in coastal areas. The chaotic part of the interannual variability of sea level and its components is stronger in the Pacific and Atlantic Oceans than in the Indian Ocean. The chaotic part of the interannual variance of sea level and of its steric component exceeds 20% over 48% of the global ocean area; this fractional area reduces to 26% for the manometric component. These results confirm the substantial imprint of the chaotic interannual variability on sea level components, questioning in several regions the attribution of their observed evolution to atmospheric causes. |
author2 |
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) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Article in Journal/Newspaper |
author |
Carret, Alice Llovel, W. Penduff, Thierry Molines, Jean‐marc |
author_facet |
Carret, Alice Llovel, W. Penduff, Thierry Molines, Jean‐marc |
author_sort |
Carret, Alice |
title |
Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 |
title_short |
Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 |
title_full |
Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 |
title_fullStr |
Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 |
title_full_unstemmed |
Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 |
title_sort |
atmospherically forced and chaotic interannual variability of regional sea level and its components over 1993–2015 |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03215005 https://insu.hal.science/insu-03215005/document https://insu.hal.science/insu-03215005/file/Carret2021.pdf https://doi.org/10.1029/2020JC017123 |
geographic |
Pacific Indian |
geographic_facet |
Pacific Indian |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-03215005 Journal of Geophysical Research. Oceans, 2021, 126 (4), pp.e2020JC017123. ⟨10.1029/2020JC017123⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC017123 insu-03215005 https://insu.hal.science/insu-03215005 https://insu.hal.science/insu-03215005/document https://insu.hal.science/insu-03215005/file/Carret2021.pdf doi:10.1029/2020JC017123 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020JC017123 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
126 |
container_issue |
4 |
_version_ |
1801382119075741696 |
spelling |
ftmeteofrance:oai:HAL:insu-03215005v1 2024-06-09T07:49:30+00:00 Atmospherically Forced and Chaotic Interannual Variability of Regional Sea Level and Its Components Over 1993–2015 Carret, Alice Llovel, W. Penduff, Thierry Molines, Jean‐marc 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) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) 2021 https://insu.hal.science/insu-03215005 https://insu.hal.science/insu-03215005/document https://insu.hal.science/insu-03215005/file/Carret2021.pdf https://doi.org/10.1029/2020JC017123 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC017123 insu-03215005 https://insu.hal.science/insu-03215005 https://insu.hal.science/insu-03215005/document https://insu.hal.science/insu-03215005/file/Carret2021.pdf doi:10.1029/2020JC017123 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://insu.hal.science/insu-03215005 Journal of Geophysical Research. Oceans, 2021, 126 (4), pp.e2020JC017123. ⟨10.1029/2020JC017123⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2021 ftmeteofrance https://doi.org/10.1029/2020JC017123 2024-05-16T11:50:35Z International audience Satellite altimetry data have revealed a global mean sea level rise of 3.1 mm/yr since 1993 with large regional sea level variability. These remote data highlight complex structures especially in strongly eddying regions. A recent study showed that over 38% of the global ocean area, the chaotic variability may hinder the attribution to the atmospheric forcing of regional sea level trends from 1993 to 2015. This study aims to complement this work by focusing on the atmospherically forced and chaotic interannual variability of regional sea level and its components. At interannual time scales, variability can hamper the detection of regional sea level trends. A global 1/4° ocean/sea‐ice 50‐member ensemble simulation is analyzed to disentangle the imprints of the atmospheric forcing and of the chaotic ocean variability on the interannual variability of regional sea level and of its steric and manometric components over 1993–2015. The atmospherically forced and chaotic interannual variabilities of sea level mainly have a steric origin, except in coastal areas. The chaotic part of the interannual variability of sea level and its components is stronger in the Pacific and Atlantic Oceans than in the Indian Ocean. The chaotic part of the interannual variance of sea level and of its steric component exceeds 20% over 48% of the global ocean area; this fractional area reduces to 26% for the manometric component. These results confirm the substantial imprint of the chaotic interannual variability on sea level components, questioning in several regions the attribution of their observed evolution to atmospheric causes. Article in Journal/Newspaper Sea ice Météo-France: HAL Pacific Indian Journal of Geophysical Research: Oceans 126 4 |