Revisiting the global mean ocean mass budget over 2005–2020
International audience We investigate the performances of Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) satellite gravimetry missions in assessing the ocean mass budget at the global scale over 2005–2020. For that purpose, we focus on the last years of the record (20...
Published in: | Ocean Science |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Online Access: | https://hal.science/hal-04631702 https://hal.science/hal-04631702/document https://hal.science/hal-04631702/file/Barnoud_et_al_os-19-321-2023.pdf https://doi.org/10.5194/os-19-321-2023 |
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ftutoulouse3hal:oai:HAL:hal-04631702v1 |
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openpolar |
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Open Polar |
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Université Toulouse III - Paul Sabatier: HAL-UPS |
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ftutoulouse3hal |
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English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Barnoud, Anne Pfeffer, Julia Cazenave, Anny Fraudeau, Robin Rousseau, Victor Ablain, Michaël Revisiting the global mean ocean mass budget over 2005–2020 |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience We investigate the performances of Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) satellite gravimetry missions in assessing the ocean mass budget at the global scale over 2005–2020. For that purpose, we focus on the last years of the record (2015–2020) when GRACE and GRACE Follow-On faced instrumental problems. We compare the global mean ocean mass estimates from GRACE and GRACE Follow-On to the sum of its contributions from Greenland, Antarctica, land glaciers, terrestrial water storage and atmospheric water content estimated with independent observations. Significant residuals are observed in the global mean ocean mass budget at interannual timescales. Our analyses suggest that the terrestrial water storage variations based on global hydrological models likely contribute in large part to the misclosure of the global mean ocean mass budget at interannual timescales. We also compare the GRACE-based global mean ocean mass with the altimetry-based global mean sea level corrected for the Argo-based thermosteric contribution (an equivalent of global mean ocean mass). After correcting for the wet troposphere drift of the radiometer on board the Jason-3 altimeter satellite, we find that mass budget misclosure is reduced but still significant. However, replacing the Argo-based thermosteric component by the Ocean Reanalysis System 5 (ORAS5) or from the Clouds and the Earth's Radiant Energy System (CERES) top of the atmosphere observations significantly reduces the residuals of the mass budget over the 2015–2020 time span. We conclude that the two most likely sources of error in the global mean ocean mass budget are the thermosteric component based on Argo and the terrestrial water storage contribution based on global hydrological models. The GRACE and GRACE Follow-On data are unlikely to be responsible on their own for the non-closure of the global mean ocean mass budget. |
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) Climat, Environnement, Couplages et Incertitudes Toulouse (CECI) Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Magellium |
format |
Article in Journal/Newspaper |
author |
Barnoud, Anne Pfeffer, Julia Cazenave, Anny Fraudeau, Robin Rousseau, Victor Ablain, Michaël |
author_facet |
Barnoud, Anne Pfeffer, Julia Cazenave, Anny Fraudeau, Robin Rousseau, Victor Ablain, Michaël |
author_sort |
Barnoud, Anne |
title |
Revisiting the global mean ocean mass budget over 2005–2020 |
title_short |
Revisiting the global mean ocean mass budget over 2005–2020 |
title_full |
Revisiting the global mean ocean mass budget over 2005–2020 |
title_fullStr |
Revisiting the global mean ocean mass budget over 2005–2020 |
title_full_unstemmed |
Revisiting the global mean ocean mass budget over 2005–2020 |
title_sort |
revisiting the global mean ocean mass budget over 2005–2020 |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04631702 https://hal.science/hal-04631702/document https://hal.science/hal-04631702/file/Barnoud_et_al_os-19-321-2023.pdf https://doi.org/10.5194/os-19-321-2023 |
genre |
Antarc* Antarctica Greenland |
genre_facet |
Antarc* Antarctica Greenland |
op_source |
ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://hal.science/hal-04631702 Ocean Science, 2023, 19 (2), pp.321-334. ⟨10.5194/os-19-321-2023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/os-19-321-2023 hal-04631702 https://hal.science/hal-04631702 https://hal.science/hal-04631702/document https://hal.science/hal-04631702/file/Barnoud_et_al_os-19-321-2023.pdf doi:10.5194/os-19-321-2023 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/os-19-321-2023 |
container_title |
Ocean Science |
container_volume |
19 |
container_issue |
2 |
container_start_page |
321 |
op_container_end_page |
334 |
_version_ |
1810290180691591168 |
spelling |
ftutoulouse3hal:oai:HAL:hal-04631702v1 2024-09-15T17:48:41+00:00 Revisiting the global mean ocean mass budget over 2005–2020 Barnoud, Anne Pfeffer, Julia Cazenave, Anny Fraudeau, Robin Rousseau, Victor Ablain, Michaël 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) Climat, Environnement, Couplages et Incertitudes Toulouse (CECI) Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Magellium 2023-03-23 https://hal.science/hal-04631702 https://hal.science/hal-04631702/document https://hal.science/hal-04631702/file/Barnoud_et_al_os-19-321-2023.pdf https://doi.org/10.5194/os-19-321-2023 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/os-19-321-2023 hal-04631702 https://hal.science/hal-04631702 https://hal.science/hal-04631702/document https://hal.science/hal-04631702/file/Barnoud_et_al_os-19-321-2023.pdf doi:10.5194/os-19-321-2023 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://hal.science/hal-04631702 Ocean Science, 2023, 19 (2), pp.321-334. ⟨10.5194/os-19-321-2023⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftutoulouse3hal https://doi.org/10.5194/os-19-321-2023 2024-07-11T04:20:31Z International audience We investigate the performances of Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO) satellite gravimetry missions in assessing the ocean mass budget at the global scale over 2005–2020. For that purpose, we focus on the last years of the record (2015–2020) when GRACE and GRACE Follow-On faced instrumental problems. We compare the global mean ocean mass estimates from GRACE and GRACE Follow-On to the sum of its contributions from Greenland, Antarctica, land glaciers, terrestrial water storage and atmospheric water content estimated with independent observations. Significant residuals are observed in the global mean ocean mass budget at interannual timescales. Our analyses suggest that the terrestrial water storage variations based on global hydrological models likely contribute in large part to the misclosure of the global mean ocean mass budget at interannual timescales. We also compare the GRACE-based global mean ocean mass with the altimetry-based global mean sea level corrected for the Argo-based thermosteric contribution (an equivalent of global mean ocean mass). After correcting for the wet troposphere drift of the radiometer on board the Jason-3 altimeter satellite, we find that mass budget misclosure is reduced but still significant. However, replacing the Argo-based thermosteric component by the Ocean Reanalysis System 5 (ORAS5) or from the Clouds and the Earth's Radiant Energy System (CERES) top of the atmosphere observations significantly reduces the residuals of the mass budget over the 2015–2020 time span. We conclude that the two most likely sources of error in the global mean ocean mass budget are the thermosteric component based on Argo and the terrestrial water storage contribution based on global hydrological models. The GRACE and GRACE Follow-On data are unlikely to be responsible on their own for the non-closure of the global mean ocean mass budget. Article in Journal/Newspaper Antarc* Antarctica Greenland Université Toulouse III - Paul Sabatier: HAL-UPS Ocean Science 19 2 321 334 |