Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event
International audience The 4.2 ka BP event, spanning from ca 4200 to 3900 cal BP, has been documented in numerous archaeological data and continental archives across the Northern Hemisphere as an abrupt shift to dry and cold climate. However, data on synchronous ocean circulation changes are notably...
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
2019
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Online Access: | https://insu.hal.science/insu-02104905 https://insu.hal.science/insu-02104905/document https://insu.hal.science/insu-02104905/file/Jalali%20et%20al.%20CP2019.pdf https://doi.org/10.5194/cp-15-701-2019 |
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ftsorbonneuniv:oai:HAL:insu-02104905v1 |
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HAL Sorbonne Université |
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English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Jalali, Bassem Sicre, Marie-Alexandrine Azuara, Julien Pellichero, Violaine Combourieu-Nebout, Nathalie Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience The 4.2 ka BP event, spanning from ca 4200 to 3900 cal BP, has been documented in numerous archaeological data and continental archives across the Northern Hemisphere as an abrupt shift to dry and cold climate. However, data on synchronous ocean circulation changes are notably lacking, thus preventing us from getting a full insight into the physical mechanisms responsible for this climate deterioration. Here, we present two high-resolution (5-20 years) sea surface temperature (SST) records from the subpolar gyre and off north Iceland in the vicinity of the polar front obtained from alkenone paleo-thermometry and compare them with proxy data from the western Mediterranean Sea to gain information on regional temperature and precipitation patterns. Our results are evidence of a temperature dipole pattern which, combined with other paleo-oceanographic records of the North Atlantic, suggests a weakening of the subpolar gyre possibly associated with atmospheric blocked regimes. |
author2 |
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) Variabilité de l'Océan et de la Glace de mer (VOG) 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)) Histoire naturelle de l'Homme préhistorique (HNHP) Muséum national d'Histoire naturelle (MNHN)-Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Jalali, Bassem Sicre, Marie-Alexandrine Azuara, Julien Pellichero, Violaine Combourieu-Nebout, Nathalie |
author_facet |
Jalali, Bassem Sicre, Marie-Alexandrine Azuara, Julien Pellichero, Violaine Combourieu-Nebout, Nathalie |
author_sort |
Jalali, Bassem |
title |
Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event |
title_short |
Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event |
title_full |
Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event |
title_fullStr |
Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event |
title_full_unstemmed |
Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event |
title_sort |
influence of the north atlantic subpolar gyre circulation on the 4.2 ka bp event |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://insu.hal.science/insu-02104905 https://insu.hal.science/insu-02104905/document https://insu.hal.science/insu-02104905/file/Jalali%20et%20al.%20CP2019.pdf https://doi.org/10.5194/cp-15-701-2019 |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://insu.hal.science/insu-02104905 Climate of the Past, 2019, 15 (2), pp.701-711. ⟨10.5194/cp-15-701-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-15-701-2019 insu-02104905 https://insu.hal.science/insu-02104905 https://insu.hal.science/insu-02104905/document https://insu.hal.science/insu-02104905/file/Jalali%20et%20al.%20CP2019.pdf doi:10.5194/cp-15-701-2019 WOS: 000463863900001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-15-701-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
2 |
container_start_page |
701 |
op_container_end_page |
711 |
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1799482494755536896 |
spelling |
ftsorbonneuniv:oai:HAL:insu-02104905v1 2024-05-19T07:42:48+00:00 Influence of the North Atlantic subpolar gyre circulation on the 4.2 ka BP event Jalali, Bassem Sicre, Marie-Alexandrine Azuara, Julien Pellichero, Violaine Combourieu-Nebout, Nathalie 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) Variabilité de l'Océan et de la Glace de mer (VOG) 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)) Histoire naturelle de l'Homme préhistorique (HNHP) Muséum national d'Histoire naturelle (MNHN)-Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) 2019 https://insu.hal.science/insu-02104905 https://insu.hal.science/insu-02104905/document https://insu.hal.science/insu-02104905/file/Jalali%20et%20al.%20CP2019.pdf https://doi.org/10.5194/cp-15-701-2019 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-15-701-2019 insu-02104905 https://insu.hal.science/insu-02104905 https://insu.hal.science/insu-02104905/document https://insu.hal.science/insu-02104905/file/Jalali%20et%20al.%20CP2019.pdf doi:10.5194/cp-15-701-2019 WOS: 000463863900001 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://insu.hal.science/insu-02104905 Climate of the Past, 2019, 15 (2), pp.701-711. ⟨10.5194/cp-15-701-2019⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2019 ftsorbonneuniv https://doi.org/10.5194/cp-15-701-2019 2024-04-25T04:07:12Z International audience The 4.2 ka BP event, spanning from ca 4200 to 3900 cal BP, has been documented in numerous archaeological data and continental archives across the Northern Hemisphere as an abrupt shift to dry and cold climate. However, data on synchronous ocean circulation changes are notably lacking, thus preventing us from getting a full insight into the physical mechanisms responsible for this climate deterioration. Here, we present two high-resolution (5-20 years) sea surface temperature (SST) records from the subpolar gyre and off north Iceland in the vicinity of the polar front obtained from alkenone paleo-thermometry and compare them with proxy data from the western Mediterranean Sea to gain information on regional temperature and precipitation patterns. Our results are evidence of a temperature dipole pattern which, combined with other paleo-oceanographic records of the North Atlantic, suggests a weakening of the subpolar gyre possibly associated with atmospheric blocked regimes. Article in Journal/Newspaper Iceland North Atlantic HAL Sorbonne Université Climate of the Past 15 2 701 711 |