Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean
International audience At present, a strong latitudinal sea surface temperature (SST) gradient of ~16°C exists across the Southern Ocean, maintained by the Antarctic Circumpolar Current (ACC) and a set of complex frontal systems. Together with the Antarctic ice masses, this system has formed one of...
Published in: | Climate of the Past |
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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-04283114 https://hal.science/hal-04283114/document https://hal.science/hal-04283114/file/2023-%20Hoem%20et%20al.,%20pre-print%20CP2023%20.pdf https://doi.org/10.5194/cp-19-1931-2023 |
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ftccsdartic:oai:HAL:hal-04283114v1 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes Hoem, Frida, S. López-Quirós, Adrián van de Lagemaat, Suzanna Etourneau, Johan Sicre, Marie-Alexandrine Escutia, Carlota Brinkhuis, Henk Peterse, Francien Sangiorgi, Francesca Bijl, Peter, K Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean |
topic_facet |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience At present, a strong latitudinal sea surface temperature (SST) gradient of ~16°C exists across the Southern Ocean, maintained by the Antarctic Circumpolar Current (ACC) and a set of complex frontal systems. Together with the Antarctic ice masses, this system has formed one of the most important global climate regulators. The timing of the onset of the ACCsystem, its development towards modern-day strength, and the consequences for e.g., the latitudinal SST gradient around the southern Atlantic Ocean, are still uncertain. Here we present new TEX$_{86}$-biomarker records, calibrated to SST, from two sites located east of Drake Passage (southern South Atlantic) to assist in better understanding two critical time intervals of prominent climate transitions during the Cenozoic: The Late Eocene-Early Oligocene (ODP Site 696) and Middle-Late Miocene (IODP Site U1536) transitions. Our results overall show rather temperate conditions (20-11°C) during the Late Eocene to Early Oligocene interval, with a weaker latitudinal SST gradient (~8°C) across the Atlantic sector of the Southern Ocean compared to present day (~16°C). We ascribe the regional similarity in SSTs across the Late Eocene-Early Oligocene South Atlantic to a persistent, strong Subpolar Gyre circulation, connecting all sites, which can only exist in absence of a strong throughflow across the Drake Passage. Surprisingly, the southern South Atlantic records show comparable SSTs (~12-14°C) during both the Earliest Oligocene Oxygen Isotope Step (EOIS, ~33.65 Ma) and the Miocene Climate Optimum (MCO, ~16.5 Ma). Apparently, maximum Oligocene Antarctic ice volume could coexist with warm ice-proximal surface ocean conditions, while at similar ocean temperatures, the Middle Miocene Antarctic ice sheet was strongly reduced. Southern South Atlantic SSTs cooled to ~5°C at the onset of the Middle Miocene Climate Transition (MMCT, 14 Ma), making it the coldest oceanic region recorded around Antarctica and the likely main location for deep water ... |
author2 |
Department of Earth Sciences Utrecht Universiteit Utrecht / Utrecht University Utrecht Universidad de Granada = University of Granada (UGR) iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change Aarhus University Aarhus École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Variabilité de l'Océan et de la Glace de mer (VOG) 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) Instituto Andaluz de Ciencias de la Tierra (IACT) Consejo Superior de Investigaciones Cientificas = Spanish National Research Council (CSIC)-Universidad de Granada = University of Granada (UGR) Royal Netherlands Institute for Sea Research (NIOZ) the Spanish Ministry of Science and Innovation (grants CTM2014-60451-C2-1/2-P and CTM2017-89711-C2-475 1/2-P, co-funded by the European Union through FEDER funds) European Project: 802835 ,OceaNice |
format |
Article in Journal/Newspaper |
author |
Hoem, Frida, S. López-Quirós, Adrián van de Lagemaat, Suzanna Etourneau, Johan Sicre, Marie-Alexandrine Escutia, Carlota Brinkhuis, Henk Peterse, Francien Sangiorgi, Francesca Bijl, Peter, K |
author_facet |
Hoem, Frida, S. López-Quirós, Adrián van de Lagemaat, Suzanna Etourneau, Johan Sicre, Marie-Alexandrine Escutia, Carlota Brinkhuis, Henk Peterse, Francien Sangiorgi, Francesca Bijl, Peter, K |
author_sort |
Hoem, Frida, S. |
title |
Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean |
title_short |
Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean |
title_full |
Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean |
title_fullStr |
Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean |
title_full_unstemmed |
Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean |
title_sort |
late cenozoic sea-surface-temperature evolution of the south atlantic ocean |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04283114 https://hal.science/hal-04283114/document https://hal.science/hal-04283114/file/2023-%20Hoem%20et%20al.,%20pre-print%20CP2023%20.pdf https://doi.org/10.5194/cp-19-1931-2023 |
geographic |
Antarctic Southern Ocean The Antarctic Drake Passage |
geographic_facet |
Antarctic Southern Ocean The Antarctic Drake Passage |
genre |
Antarc* Antarctic Antarctica Drake Passage Ice Sheet South Atlantic Ocean Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Drake Passage Ice Sheet South Atlantic Ocean Southern Ocean |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-04283114 Climate of the Past, 2023, 19 (10), pp.1931-1949. ⟨10.5194/cp-19-1931-2023⟩ https://cp.copernicus.org/articles/19/1931/2023/ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-19-1931-2023 info:eu-repo/grantAgreement//802835 /EU/Paleoceanography of the Ice-proximal Southern Ocean during Past Warm Climates/OceaNice hal-04283114 https://hal.science/hal-04283114 https://hal.science/hal-04283114/document https://hal.science/hal-04283114/file/2023-%20Hoem%20et%20al.,%20pre-print%20CP2023%20.pdf doi:10.5194/cp-19-1931-2023 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-19-1931-2023 |
container_title |
Climate of the Past |
container_volume |
19 |
container_issue |
10 |
container_start_page |
1931 |
op_container_end_page |
1949 |
_version_ |
1785545830643531776 |
spelling |
ftccsdartic:oai:HAL:hal-04283114v1 2023-12-17T10:22:17+01:00 Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean Hoem, Frida, S. López-Quirós, Adrián van de Lagemaat, Suzanna Etourneau, Johan Sicre, Marie-Alexandrine Escutia, Carlota Brinkhuis, Henk Peterse, Francien Sangiorgi, Francesca Bijl, Peter, K Department of Earth Sciences Utrecht Universiteit Utrecht / Utrecht University Utrecht Universidad de Granada = University of Granada (UGR) iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change Aarhus University Aarhus École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Variabilité de l'Océan et de la Glace de mer (VOG) 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) Instituto Andaluz de Ciencias de la Tierra (IACT) Consejo Superior de Investigaciones Cientificas = Spanish National Research Council (CSIC)-Universidad de Granada = University of Granada (UGR) Royal Netherlands Institute for Sea Research (NIOZ) the Spanish Ministry of Science and Innovation (grants CTM2014-60451-C2-1/2-P and CTM2017-89711-C2-475 1/2-P, co-funded by the European Union through FEDER funds) European Project: 802835 ,OceaNice 2023-03-01 https://hal.science/hal-04283114 https://hal.science/hal-04283114/document https://hal.science/hal-04283114/file/2023-%20Hoem%20et%20al.,%20pre-print%20CP2023%20.pdf https://doi.org/10.5194/cp-19-1931-2023 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-19-1931-2023 info:eu-repo/grantAgreement//802835 /EU/Paleoceanography of the Ice-proximal Southern Ocean during Past Warm Climates/OceaNice hal-04283114 https://hal.science/hal-04283114 https://hal.science/hal-04283114/document https://hal.science/hal-04283114/file/2023-%20Hoem%20et%20al.,%20pre-print%20CP2023%20.pdf doi:10.5194/cp-19-1931-2023 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-04283114 Climate of the Past, 2023, 19 (10), pp.1931-1949. ⟨10.5194/cp-19-1931-2023⟩ https://cp.copernicus.org/articles/19/1931/2023/ [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.5194/cp-19-1931-2023 2023-11-18T23:38:36Z International audience At present, a strong latitudinal sea surface temperature (SST) gradient of ~16°C exists across the Southern Ocean, maintained by the Antarctic Circumpolar Current (ACC) and a set of complex frontal systems. Together with the Antarctic ice masses, this system has formed one of the most important global climate regulators. The timing of the onset of the ACCsystem, its development towards modern-day strength, and the consequences for e.g., the latitudinal SST gradient around the southern Atlantic Ocean, are still uncertain. Here we present new TEX$_{86}$-biomarker records, calibrated to SST, from two sites located east of Drake Passage (southern South Atlantic) to assist in better understanding two critical time intervals of prominent climate transitions during the Cenozoic: The Late Eocene-Early Oligocene (ODP Site 696) and Middle-Late Miocene (IODP Site U1536) transitions. Our results overall show rather temperate conditions (20-11°C) during the Late Eocene to Early Oligocene interval, with a weaker latitudinal SST gradient (~8°C) across the Atlantic sector of the Southern Ocean compared to present day (~16°C). We ascribe the regional similarity in SSTs across the Late Eocene-Early Oligocene South Atlantic to a persistent, strong Subpolar Gyre circulation, connecting all sites, which can only exist in absence of a strong throughflow across the Drake Passage. Surprisingly, the southern South Atlantic records show comparable SSTs (~12-14°C) during both the Earliest Oligocene Oxygen Isotope Step (EOIS, ~33.65 Ma) and the Miocene Climate Optimum (MCO, ~16.5 Ma). Apparently, maximum Oligocene Antarctic ice volume could coexist with warm ice-proximal surface ocean conditions, while at similar ocean temperatures, the Middle Miocene Antarctic ice sheet was strongly reduced. Southern South Atlantic SSTs cooled to ~5°C at the onset of the Middle Miocene Climate Transition (MMCT, 14 Ma), making it the coldest oceanic region recorded around Antarctica and the likely main location for deep water ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Drake Passage Ice Sheet South Atlantic Ocean Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Southern Ocean The Antarctic Drake Passage Climate of the Past 19 10 1931 1949 |