Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean
International audience The hydrological cycle is expected to intensify in a warming climate. However, observational evidence of such changes in the Southern Ocean is difficult to obtain due to sparse measurements and a complex superposition of changes in precipitation, sea ice, and glacial meltwater...
Published in: | Nature Communications |
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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://insu.hal.science/insu-04139555 https://insu.hal.science/insu-04139555/document https://insu.hal.science/insu-04139555/file/s41467-023-38425-5.pdf https://doi.org/10.1038/s41467-023-38425-5 |
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ftmuseumnhn:oai:HAL:insu-04139555v1 |
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openpolar |
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Open Polar |
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Muséum National d'Histoire Naturelle (MNHM): HAL |
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ftmuseumnhn |
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English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Akhoudas, Camille Hayatte Sallée, Jean-Baptiste Reverdin, Gilles Haumann, F. Alexander Pauthenet, Etienne Chapman, Christopher C. Margirier, Félix Lo Monaco, Claire Metzl, Nicolas Meilland, Julie Stranne, Christian Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience The hydrological cycle is expected to intensify in a warming climate. However, observational evidence of such changes in the Southern Ocean is difficult to obtain due to sparse measurements and a complex superposition of changes in precipitation, sea ice, and glacial meltwater. Here we disentangle these signals using a dataset of salinity and seawater oxygen isotope observations collected in the Indian sector of the Southern Ocean. Our results show that the atmospheric water cycle has intensified in this region between 1993 and 2021, increasing the salinity in subtropical surface waters by 0.06 ± 0.07 g kg −1 per decade, and decreasing the salinity in subpolar surface waters by -0.02 ± 0.01 g kg −1 per decade. The oxygen isotope data allow to discriminate the different freshwater processes showing that in the subpolar region, the freshening is largely driven by the increase in net precipitation (by a factor two) while the decrease in sea ice melt is largely balanced by the contribution of glacial meltwater at these latitudes. These changes extend the growing evidence for an acceleration of the hydrological cycle and a melting cryosphere that can be expected from global warming. |
author2 |
Department of Geological Sciences Stockholm Stockholm University Bolin Centre for Climate Research Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ) 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) CSIRO Centre for Environment and Life Sciences Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) School of Earth and Atmospheric Sciences Atlanta Georgia Institute of Technology Atlanta Cycles biogéochimiques marins : processus et perturbations (CYBIOM) Center for Marine Environmental Sciences Bremen (MARUM) Universität Bremen European Project: 821001,SO-CHIC(2019) |
format |
Article in Journal/Newspaper |
author |
Akhoudas, Camille Hayatte Sallée, Jean-Baptiste Reverdin, Gilles Haumann, F. Alexander Pauthenet, Etienne Chapman, Christopher C. Margirier, Félix Lo Monaco, Claire Metzl, Nicolas Meilland, Julie Stranne, Christian |
author_facet |
Akhoudas, Camille Hayatte Sallée, Jean-Baptiste Reverdin, Gilles Haumann, F. Alexander Pauthenet, Etienne Chapman, Christopher C. Margirier, Félix Lo Monaco, Claire Metzl, Nicolas Meilland, Julie Stranne, Christian |
author_sort |
Akhoudas, Camille Hayatte |
title |
Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean |
title_short |
Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean |
title_full |
Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean |
title_fullStr |
Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean |
title_full_unstemmed |
Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean |
title_sort |
isotopic evidence for an intensified hydrological cycle in the indian sector of the southern ocean |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://insu.hal.science/insu-04139555 https://insu.hal.science/insu-04139555/document https://insu.hal.science/insu-04139555/file/s41467-023-38425-5.pdf https://doi.org/10.1038/s41467-023-38425-5 |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://insu.hal.science/insu-04139555 Nature Communications, 2023, 14, ⟨10.1038/s41467-023-38425-5⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-38425-5 info:eu-repo/grantAgreement//821001/EU/Southern Ocean Carbon and Heat Impact on Climate/SO-CHIC insu-04139555 https://insu.hal.science/insu-04139555 https://insu.hal.science/insu-04139555/document https://insu.hal.science/insu-04139555/file/s41467-023-38425-5.pdf BIBCODE: 2023NatCo.14.2763A doi:10.1038/s41467-023-38425-5 WOS: 001001531500013 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41467-023-38425-5 |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
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1797569101537738752 |
spelling |
ftmuseumnhn:oai:HAL:insu-04139555v1 2024-04-28T08:37:47+00:00 Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean Akhoudas, Camille Hayatte Sallée, Jean-Baptiste Reverdin, Gilles Haumann, F. Alexander Pauthenet, Etienne Chapman, Christopher C. Margirier, Félix Lo Monaco, Claire Metzl, Nicolas Meilland, Julie Stranne, Christian Department of Geological Sciences Stockholm Stockholm University Bolin Centre for Climate Research Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ) 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) CSIRO Centre for Environment and Life Sciences Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) School of Earth and Atmospheric Sciences Atlanta Georgia Institute of Technology Atlanta Cycles biogéochimiques marins : processus et perturbations (CYBIOM) Center for Marine Environmental Sciences Bremen (MARUM) Universität Bremen European Project: 821001,SO-CHIC(2019) 2023 https://insu.hal.science/insu-04139555 https://insu.hal.science/insu-04139555/document https://insu.hal.science/insu-04139555/file/s41467-023-38425-5.pdf https://doi.org/10.1038/s41467-023-38425-5 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-38425-5 info:eu-repo/grantAgreement//821001/EU/Southern Ocean Carbon and Heat Impact on Climate/SO-CHIC insu-04139555 https://insu.hal.science/insu-04139555 https://insu.hal.science/insu-04139555/document https://insu.hal.science/insu-04139555/file/s41467-023-38425-5.pdf BIBCODE: 2023NatCo.14.2763A doi:10.1038/s41467-023-38425-5 WOS: 001001531500013 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://insu.hal.science/insu-04139555 Nature Communications, 2023, 14, ⟨10.1038/s41467-023-38425-5⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftmuseumnhn https://doi.org/10.1038/s41467-023-38425-5 2024-04-17T23:56:34Z International audience The hydrological cycle is expected to intensify in a warming climate. However, observational evidence of such changes in the Southern Ocean is difficult to obtain due to sparse measurements and a complex superposition of changes in precipitation, sea ice, and glacial meltwater. Here we disentangle these signals using a dataset of salinity and seawater oxygen isotope observations collected in the Indian sector of the Southern Ocean. Our results show that the atmospheric water cycle has intensified in this region between 1993 and 2021, increasing the salinity in subtropical surface waters by 0.06 ± 0.07 g kg −1 per decade, and decreasing the salinity in subpolar surface waters by -0.02 ± 0.01 g kg −1 per decade. The oxygen isotope data allow to discriminate the different freshwater processes showing that in the subpolar region, the freshening is largely driven by the increase in net precipitation (by a factor two) while the decrease in sea ice melt is largely balanced by the contribution of glacial meltwater at these latitudes. These changes extend the growing evidence for an acceleration of the hydrological cycle and a melting cryosphere that can be expected from global warming. Article in Journal/Newspaper Sea ice Southern Ocean Muséum National d'Histoire Naturelle (MNHM): HAL Nature Communications 14 1 |