Global sea-level budget 1993-present
International audience Global mean sea level is an integral of changes occurring in the climate system in response to un-forced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more component...
Published in: | Earth System Science Data |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2018
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-01890287 https://hal-insu.archives-ouvertes.fr/insu-01890287/document https://hal-insu.archives-ouvertes.fr/insu-01890287/file/essd-10-1551-2018.pdf https://doi.org/10.5194/essd-10-1551-2018 |
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English |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Cazenave, Anny Meyssignac, Benoit Global Sea Level Budget Group, WCRP Longuevergne, Laurent Global sea-level budget 1993-present |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Global mean sea level is an integral of changes occurring in the climate system in response to un-forced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more components. Study of the sea-level budget provides constraints on missing or poorly known contributions, such as the unsurveyed deep ocean or the still uncertain land water component. In the context of the World Climate Research Programme Grand Challenge entitled "Re-gional Sea Level and Coastal Impacts", an international effort involving the sea-level community worldwide has been recently initiated with the objective of assessing the various datasets used to estimate components of the sea-level budget during the altimetry era (1993 to present). These datasets are based on the combination of a broad range of space-based and in situ observations, model estimates, and algorithms. Evaluating their quality, quantifying uncertainties and identifying sources of discrepancies between component estimates is extremely useful for various applications in climate research. This effort involves several tens of scientists from about 50 research teams/institutions worldwide (www.wcrp-climate.org/grand-challenges/gc-sea-level, last access: 22 August 2018). The results presented in this paper are a synthesis of the first assessment performed during 2017-2018. We present estimates of the altimetry-based global mean sea level (average rate of 3.1 ± 0.3 mm yr −1 and acceleration of 0.1 mm yr −2 over 1993-present), as well as of the different components of the sea-level budget (http://doi.org/10.17882/54854, last access: 22 August 2018). We further examine closure of the sea-level budget, comparing the observed global mean sea level with the sum of components. Ocean thermal expansion, glaciers, Greenland and Antarctica contribute 42 %, 21 %, 15 % and 8 % to the global mean sea level over the 1993-present period. We also study the sea-level ... |
author2 |
Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) International Space Science Institute Bern (ISSI) Géosciences Rennes (GR) Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) |
format |
Article in Journal/Newspaper |
author |
Cazenave, Anny Meyssignac, Benoit Global Sea Level Budget Group, WCRP Longuevergne, Laurent |
author_facet |
Cazenave, Anny Meyssignac, Benoit Global Sea Level Budget Group, WCRP Longuevergne, Laurent |
author_sort |
Cazenave, Anny |
title |
Global sea-level budget 1993-present |
title_short |
Global sea-level budget 1993-present |
title_full |
Global sea-level budget 1993-present |
title_fullStr |
Global sea-level budget 1993-present |
title_full_unstemmed |
Global sea-level budget 1993-present |
title_sort |
global sea-level budget 1993-present |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal-insu.archives-ouvertes.fr/insu-01890287 https://hal-insu.archives-ouvertes.fr/insu-01890287/document https://hal-insu.archives-ouvertes.fr/insu-01890287/file/essd-10-1551-2018.pdf https://doi.org/10.5194/essd-10-1551-2018 |
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Greenland |
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Greenland |
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Antarc* Antarctica Greenland |
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Antarc* Antarctica Greenland |
op_source |
ISSN: 1866-3508 Earth System Science Data https://hal-insu.archives-ouvertes.fr/insu-01890287 Earth System Science Data, Copernicus Publications, 2018, 10 (3), pp.1551-1590. ⟨10.5194/essd-10-1551-2018⟩ |
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http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/essd-10-1551-2018 |
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Earth System Science Data |
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10 |
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ftccsdartic:oai:HAL:insu-01890287v1 2023-05-15T13:44:56+02:00 Global sea-level budget 1993-present Cazenave, Anny Meyssignac, Benoit Global Sea Level Budget Group, WCRP Longuevergne, Laurent Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) International Space Science Institute Bern (ISSI) Géosciences Rennes (GR) Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) 2018 https://hal-insu.archives-ouvertes.fr/insu-01890287 https://hal-insu.archives-ouvertes.fr/insu-01890287/document https://hal-insu.archives-ouvertes.fr/insu-01890287/file/essd-10-1551-2018.pdf https://doi.org/10.5194/essd-10-1551-2018 en eng HAL CCSD Copernicus Publications info:eu-repo/semantics/altIdentifier/doi/10.5194/essd-10-1551-2018 insu-01890287 https://hal-insu.archives-ouvertes.fr/insu-01890287 https://hal-insu.archives-ouvertes.fr/insu-01890287/document https://hal-insu.archives-ouvertes.fr/insu-01890287/file/essd-10-1551-2018.pdf doi:10.5194/essd-10-1551-2018 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1866-3508 Earth System Science Data https://hal-insu.archives-ouvertes.fr/insu-01890287 Earth System Science Data, Copernicus Publications, 2018, 10 (3), pp.1551-1590. ⟨10.5194/essd-10-1551-2018⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.5194/essd-10-1551-2018 2021-11-07T02:40:27Z International audience Global mean sea level is an integral of changes occurring in the climate system in response to un-forced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more components. Study of the sea-level budget provides constraints on missing or poorly known contributions, such as the unsurveyed deep ocean or the still uncertain land water component. In the context of the World Climate Research Programme Grand Challenge entitled "Re-gional Sea Level and Coastal Impacts", an international effort involving the sea-level community worldwide has been recently initiated with the objective of assessing the various datasets used to estimate components of the sea-level budget during the altimetry era (1993 to present). These datasets are based on the combination of a broad range of space-based and in situ observations, model estimates, and algorithms. Evaluating their quality, quantifying uncertainties and identifying sources of discrepancies between component estimates is extremely useful for various applications in climate research. This effort involves several tens of scientists from about 50 research teams/institutions worldwide (www.wcrp-climate.org/grand-challenges/gc-sea-level, last access: 22 August 2018). The results presented in this paper are a synthesis of the first assessment performed during 2017-2018. We present estimates of the altimetry-based global mean sea level (average rate of 3.1 ± 0.3 mm yr −1 and acceleration of 0.1 mm yr −2 over 1993-present), as well as of the different components of the sea-level budget (http://doi.org/10.17882/54854, last access: 22 August 2018). We further examine closure of the sea-level budget, comparing the observed global mean sea level with the sum of components. Ocean thermal expansion, glaciers, Greenland and Antarctica contribute 42 %, 21 %, 15 % and 8 % to the global mean sea level over the 1993-present period. We also study the sea-level ... Article in Journal/Newspaper Antarc* Antarctica Greenland Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland Earth System Science Data 10 3 1551 1590 |