The Southern Hemisphere at glacial terminations: insights from the Dome C ice core
International audience The many different proxy records from the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core allow for the first time a comparison of nine glacial terminations in great detail. Despite the fact that all terminations cover the transition from a glacial maximu...
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
2008
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Subjects: | |
Online Access: | https://insu.hal.science/insu-00381054 https://insu.hal.science/insu-00381054/document https://insu.hal.science/insu-00381054/file/cp-4-345-2008.pdf https://doi.org/10.5194/cp-4-345-2008 |
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Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Röthlisberger, Regine Mudelsee, Manfred Bigler, Matthias de Angelis, Martine Fischer, Hubertus Hansson, Margareta Lambert, Fabrice Masson-Delmotte, Valérie Sime, L. Udisti, Roberto Wolff, Eric The Southern Hemisphere at glacial terminations: insights from the Dome C ice core |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The many different proxy records from the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core allow for the first time a comparison of nine glacial terminations in great detail. Despite the fact that all terminations cover the transition from a glacial maximum into an interglacial, there are large differences between single terminations. For some terminations, Antarctic temperature increased only moderately, while for others, the amplitude of change at the termination was much larger. For the different terminations, the rate of change in temperature is more similar than the magnitude or duration of change. These temperature changes were accompanied by vast changes in dust and sea salt deposition all over Antarctica. Here we investigate the phasing between a South American dust proxy (non-sea-salt calcium flux, nssCa2+), a sea ice proxy (sea salt sodium flux, ssNa+) and a proxy for Antarctic temperature (deuterium, δD). In particular, we look into whether a similar sequence of events applies to all terminations, despite their different characteristics. All proxies are derived from the EPICA Dome C ice core, resulting in a relative dating uncertainty between the proxies of less than 20 years. At the start of the terminations, the temperature (δD) increase and dust (nssCa2+ flux) decrease start synchronously. The sea ice proxy (ssNa+ flux), however, only changes once the temperature has reached a particular threshold, approximately 5°C below present day temperatures (corresponding to a δD value of −420‰). This reflects to a large extent the limited sensitivity of the sea ice proxy during very cold periods with large sea ice extent. At terminations where this threshold is not reached (TVI, TVIII), ssNa+ flux shows no changes. Above this threshold, the sea ice proxy is closely coupled to the Antarctic temperature, and interglacial levels are reached at the same time for both ssNa+ and δD. On the other hand, once another threshold at approximately 2°C below present day ... |
author2 |
British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Climate Risk Analysis (CRAAM) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) 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) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie Universität Heidelberg Heidelberg = Heidelberg University Department of Physical Geography and Quaternary Geology Stockholm University 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)) Department of Chemistry Università degli Studi di Firenze = University of Florence = Université de Florence (UniFI) European Project for Ice Coring in Antarctica (EPICA) |
format |
Article in Journal/Newspaper |
author |
Röthlisberger, Regine Mudelsee, Manfred Bigler, Matthias de Angelis, Martine Fischer, Hubertus Hansson, Margareta Lambert, Fabrice Masson-Delmotte, Valérie Sime, L. Udisti, Roberto Wolff, Eric |
author_facet |
Röthlisberger, Regine Mudelsee, Manfred Bigler, Matthias de Angelis, Martine Fischer, Hubertus Hansson, Margareta Lambert, Fabrice Masson-Delmotte, Valérie Sime, L. Udisti, Roberto Wolff, Eric |
author_sort |
Röthlisberger, Regine |
title |
The Southern Hemisphere at glacial terminations: insights from the Dome C ice core |
title_short |
The Southern Hemisphere at glacial terminations: insights from the Dome C ice core |
title_full |
The Southern Hemisphere at glacial terminations: insights from the Dome C ice core |
title_fullStr |
The Southern Hemisphere at glacial terminations: insights from the Dome C ice core |
title_full_unstemmed |
The Southern Hemisphere at glacial terminations: insights from the Dome C ice core |
title_sort |
southern hemisphere at glacial terminations: insights from the dome c ice core |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://insu.hal.science/insu-00381054 https://insu.hal.science/insu-00381054/document https://insu.hal.science/insu-00381054/file/cp-4-345-2008.pdf https://doi.org/10.5194/cp-4-345-2008 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica EPICA ice core Sea ice |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core Sea ice |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://insu.hal.science/insu-00381054 Climate of the Past, 2008, 4 (4), pp.345-356. ⟨10.5194/cp-4-345-2008⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-4-345-2008 insu-00381054 https://insu.hal.science/insu-00381054 https://insu.hal.science/insu-00381054/document https://insu.hal.science/insu-00381054/file/cp-4-345-2008.pdf doi:10.5194/cp-4-345-2008 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-4-345-2008 |
container_title |
Climate of the Past |
container_volume |
4 |
container_issue |
4 |
container_start_page |
345 |
op_container_end_page |
356 |
_version_ |
1801383810321874944 |
spelling |
ftceafr:oai:HAL:insu-00381054v1 2024-06-09T07:40:24+00:00 The Southern Hemisphere at glacial terminations: insights from the Dome C ice core Röthlisberger, Regine Mudelsee, Manfred Bigler, Matthias de Angelis, Martine Fischer, Hubertus Hansson, Margareta Lambert, Fabrice Masson-Delmotte, Valérie Sime, L. Udisti, Roberto Wolff, Eric British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Climate Risk Analysis (CRAAM) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) 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) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie Universität Heidelberg Heidelberg = Heidelberg University Department of Physical Geography and Quaternary Geology Stockholm University 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)) Department of Chemistry Università degli Studi di Firenze = University of Florence = Université de Florence (UniFI) European Project for Ice Coring in Antarctica (EPICA) 2008 https://insu.hal.science/insu-00381054 https://insu.hal.science/insu-00381054/document https://insu.hal.science/insu-00381054/file/cp-4-345-2008.pdf https://doi.org/10.5194/cp-4-345-2008 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-4-345-2008 insu-00381054 https://insu.hal.science/insu-00381054 https://insu.hal.science/insu-00381054/document https://insu.hal.science/insu-00381054/file/cp-4-345-2008.pdf doi:10.5194/cp-4-345-2008 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://insu.hal.science/insu-00381054 Climate of the Past, 2008, 4 (4), pp.345-356. ⟨10.5194/cp-4-345-2008⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2008 ftceafr https://doi.org/10.5194/cp-4-345-2008 2024-05-16T14:55:00Z International audience The many different proxy records from the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core allow for the first time a comparison of nine glacial terminations in great detail. Despite the fact that all terminations cover the transition from a glacial maximum into an interglacial, there are large differences between single terminations. For some terminations, Antarctic temperature increased only moderately, while for others, the amplitude of change at the termination was much larger. For the different terminations, the rate of change in temperature is more similar than the magnitude or duration of change. These temperature changes were accompanied by vast changes in dust and sea salt deposition all over Antarctica. Here we investigate the phasing between a South American dust proxy (non-sea-salt calcium flux, nssCa2+), a sea ice proxy (sea salt sodium flux, ssNa+) and a proxy for Antarctic temperature (deuterium, δD). In particular, we look into whether a similar sequence of events applies to all terminations, despite their different characteristics. All proxies are derived from the EPICA Dome C ice core, resulting in a relative dating uncertainty between the proxies of less than 20 years. At the start of the terminations, the temperature (δD) increase and dust (nssCa2+ flux) decrease start synchronously. The sea ice proxy (ssNa+ flux), however, only changes once the temperature has reached a particular threshold, approximately 5°C below present day temperatures (corresponding to a δD value of −420‰). This reflects to a large extent the limited sensitivity of the sea ice proxy during very cold periods with large sea ice extent. At terminations where this threshold is not reached (TVI, TVIII), ssNa+ flux shows no changes. Above this threshold, the sea ice proxy is closely coupled to the Antarctic temperature, and interglacial levels are reached at the same time for both ssNa+ and δD. On the other hand, once another threshold at approximately 2°C below present day ... Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core Sea ice HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Antarctic The Antarctic Climate of the Past 4 4 345 356 |