The last deglaciation: timing the bipolar seesaw
International audience Precise information on the relative timing of north-south climate variations is a key to resolving questions concerning the mechanisms that force and couple climate changes between the hemispheres. We present a new composite record made from five well-resolved Antarctic ice co...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2011
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Subjects: | |
Online Access: | https://insu.hal.science/insu-00649687 https://insu.hal.science/insu-00649687/document https://insu.hal.science/insu-00649687/file/cp-7-671-2011.pdf https://doi.org/10.5194/cp-7-671-2011 |
id |
ftuniversailles:oai:HAL:insu-00649687v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
spellingShingle |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology Pedro, J.B. van Ommen, T.D. Rasmussen, S.O. Morgan, V.I. Chappellaz, J. Moy, A.D. Masson-Delmotte, Valérie Delmotte, M. The last deglaciation: timing the bipolar seesaw |
topic_facet |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
description |
International audience Precise information on the relative timing of north-south climate variations is a key to resolving questions concerning the mechanisms that force and couple climate changes between the hemispheres. We present a new composite record made from five well-resolved Antarctic ice core records that robustly represents the timing of regional Antarctic climate change during the last deglaciation. Using fast variations in global methane gas concentrations as time markers, the Antarctic composite is directly compared to Greenland ice core records, allowing a detailed mapping of the inter-hemispheric sequence of climate changes. Consistent with prior studies the synchronized records show that warming (and cooling) trends in Antarctica closely match cold (and warm) periods in Greenland on millennial timescales. For the first time, we also identify a sub-millennial component to the inter-hemispheric coupling. Within the Antarctic Cold Reversal the strongest Antarctic cooling occurs during the pronounced northern warmth of the Bølling. Warming then resumes in Antarctica, potentially as early as the Intra-Allerød Cold Period, but with dating uncertainty that could place it as late as the onset of the Younger Dryas stadial. There is little-to-no time lag between climate transitions in Greenland and opposing changes in Antarctica. Our results lend support to fast acting inter-hemispheric coupling mechanisms, including recently proposed bipolar atmospheric teleconnections and/or rapid bipolar ocean teleconnections. |
author2 |
Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) Institute of Marine and Antarctic Studies University of Tasmania Hobart, Australia (UTAS) Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) CLIPS Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ICOS-RAMCES (ICOS-RAMCES) LEFE ANR-07-BLAN-0125,DOME A,Dome A : Observation et Modélisation d'un Environnement extrême en Antarctique(2007) |
format |
Article in Journal/Newspaper |
author |
Pedro, J.B. van Ommen, T.D. Rasmussen, S.O. Morgan, V.I. Chappellaz, J. Moy, A.D. Masson-Delmotte, Valérie Delmotte, M. |
author_facet |
Pedro, J.B. van Ommen, T.D. Rasmussen, S.O. Morgan, V.I. Chappellaz, J. Moy, A.D. Masson-Delmotte, Valérie Delmotte, M. |
author_sort |
Pedro, J.B. |
title |
The last deglaciation: timing the bipolar seesaw |
title_short |
The last deglaciation: timing the bipolar seesaw |
title_full |
The last deglaciation: timing the bipolar seesaw |
title_fullStr |
The last deglaciation: timing the bipolar seesaw |
title_full_unstemmed |
The last deglaciation: timing the bipolar seesaw |
title_sort |
last deglaciation: timing the bipolar seesaw |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://insu.hal.science/insu-00649687 https://insu.hal.science/insu-00649687/document https://insu.hal.science/insu-00649687/file/cp-7-671-2011.pdf https://doi.org/10.5194/cp-7-671-2011 |
genre |
Antarc* Antarctic Antarctica Greenland Greenland ice core ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland Greenland ice core ice core |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://insu.hal.science/insu-00649687 Climate of the Past, 2011, 7 (2), pp.671-683. ⟨10.5194/cp-7-671-2011⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-7-671-2011 insu-00649687 https://insu.hal.science/insu-00649687 https://insu.hal.science/insu-00649687/document https://insu.hal.science/insu-00649687/file/cp-7-671-2011.pdf doi:10.5194/cp-7-671-2011 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-7-671-2011 |
container_title |
Climate of the Past |
container_volume |
7 |
container_issue |
2 |
container_start_page |
671 |
op_container_end_page |
683 |
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1797574055655636992 |
spelling |
ftuniversailles:oai:HAL:insu-00649687v1 2024-04-28T08:02:48+00:00 The last deglaciation: timing the bipolar seesaw Pedro, J.B. van Ommen, T.D. Rasmussen, S.O. Morgan, V.I. Chappellaz, J. Moy, A.D. Masson-Delmotte, Valérie Delmotte, M. Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) Institute of Marine and Antarctic Studies University of Tasmania Hobart, Australia (UTAS) Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) CLIPS Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ICOS-RAMCES (ICOS-RAMCES) LEFE ANR-07-BLAN-0125,DOME A,Dome A : Observation et Modélisation d'un Environnement extrême en Antarctique(2007) 2011-06-24 https://insu.hal.science/insu-00649687 https://insu.hal.science/insu-00649687/document https://insu.hal.science/insu-00649687/file/cp-7-671-2011.pdf https://doi.org/10.5194/cp-7-671-2011 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-7-671-2011 insu-00649687 https://insu.hal.science/insu-00649687 https://insu.hal.science/insu-00649687/document https://insu.hal.science/insu-00649687/file/cp-7-671-2011.pdf doi:10.5194/cp-7-671-2011 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://insu.hal.science/insu-00649687 Climate of the Past, 2011, 7 (2), pp.671-683. ⟨10.5194/cp-7-671-2011⟩ [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology info:eu-repo/semantics/article Journal articles 2011 ftuniversailles https://doi.org/10.5194/cp-7-671-2011 2024-04-10T23:59:27Z International audience Precise information on the relative timing of north-south climate variations is a key to resolving questions concerning the mechanisms that force and couple climate changes between the hemispheres. We present a new composite record made from five well-resolved Antarctic ice core records that robustly represents the timing of regional Antarctic climate change during the last deglaciation. Using fast variations in global methane gas concentrations as time markers, the Antarctic composite is directly compared to Greenland ice core records, allowing a detailed mapping of the inter-hemispheric sequence of climate changes. Consistent with prior studies the synchronized records show that warming (and cooling) trends in Antarctica closely match cold (and warm) periods in Greenland on millennial timescales. For the first time, we also identify a sub-millennial component to the inter-hemispheric coupling. Within the Antarctic Cold Reversal the strongest Antarctic cooling occurs during the pronounced northern warmth of the Bølling. Warming then resumes in Antarctica, potentially as early as the Intra-Allerød Cold Period, but with dating uncertainty that could place it as late as the onset of the Younger Dryas stadial. There is little-to-no time lag between climate transitions in Greenland and opposing changes in Antarctica. Our results lend support to fast acting inter-hemispheric coupling mechanisms, including recently proposed bipolar atmospheric teleconnections and/or rapid bipolar ocean teleconnections. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland Greenland ice core ice core Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Climate of the Past 7 2 671 683 |