The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature
International audience The mechanisms involved in the glacial inception are still poorly constrained due to a lack of high resolution and cross-dated climate records at various locations. Using air isotopic measurements in the recently drilled NorthGRIP ice core, we show that no evidence exists for...
Published in: | Climate Dynamics |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2006
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-00375520 https://doi.org/10.1007/s00382-005-0063-y |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
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 Landais, Amaelle Masson-Delmotte, Valérie Jouzel, Jean Raynaud, Dominique Johnsen, Sigfus Huber, Christof Leuenberger, Markus Schwander, Jakob Minster, Bénédicte The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The mechanisms involved in the glacial inception are still poorly constrained due to a lack of high resolution and cross-dated climate records at various locations. Using air isotopic measurements in the recently drilled NorthGRIP ice core, we show that no evidence exists for stratigraphic disturbance of the climate record of the last glacial inception (∼123–100 kyears BP) encompassing Dansgaard–Oeschger events (DO) 25, 24 and 23, even if we lack sufficient resolution to completely rule out disturbance over DO 25. We quantify the rapid surface temperature variability over DO 23 and 24 with associated warmings of 10±2.5 and 16±2.5°C, amplitudes which mimic those observed in full glacial conditions. We use records of δ18O of O2 to propose a common timescale for the NorthGRIP and the Antarctic Vostok ice cores, with a maximum uncertainty of 2,500 years, and to examine the interhemispheric sequence of events over this period. After a synchronous North–South temperature decrease, the onset of rapid events is triggered in the North through DO 25. As for later events, DO 24 and 23 have a clear Antarctic counterpart which does not seem to be the case for the very first abrupt warming (DO 25). This information, when added to intermediate levels of CO2 and to the absence of clear ice rafting associated with DO 25, highlights the uniqueness of this first event, while DO 24 and 23 appear similar to typical full glacial DO events. |
author2 |
Institute of Earth Sciences Hebrew University Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) 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)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 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) Geophysics and Water Resources Section for Geology Copenhagen Department of Geosciences and Natural Resource Management Copenhagen (IGN) 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)-Department of Geosciences and Natural Resource Management Copenhagen (IGN) University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Physics Institute University of Bern European Commission : POP project (EVK2-2000-22067) |
format |
Article in Journal/Newspaper |
author |
Landais, Amaelle Masson-Delmotte, Valérie Jouzel, Jean Raynaud, Dominique Johnsen, Sigfus Huber, Christof Leuenberger, Markus Schwander, Jakob Minster, Bénédicte |
author_facet |
Landais, Amaelle Masson-Delmotte, Valérie Jouzel, Jean Raynaud, Dominique Johnsen, Sigfus Huber, Christof Leuenberger, Markus Schwander, Jakob Minster, Bénédicte |
author_sort |
Landais, Amaelle |
title |
The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature |
title_short |
The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature |
title_full |
The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature |
title_fullStr |
The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature |
title_full_unstemmed |
The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature |
title_sort |
glacial inception as recorded in the northgrip greenland ice core: timing, structure and associated abrupt temperature |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal-insu.archives-ouvertes.fr/insu-00375520 https://doi.org/10.1007/s00382-005-0063-y |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Dansgaard-Oeschger events Greenland Greenland ice core ice core |
genre_facet |
Antarc* Antarctic Dansgaard-Oeschger events Greenland Greenland ice core ice core |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal-insu.archives-ouvertes.fr/insu-00375520 Climate Dynamics, 2006, 26 (2-3), pp.273 à 284. ⟨10.1007/s00382-005-0063-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-005-0063-y insu-00375520 https://hal-insu.archives-ouvertes.fr/insu-00375520 doi:10.1007/s00382-005-0063-y |
op_doi |
https://doi.org/10.1007/s00382-005-0063-y |
container_title |
Climate Dynamics |
container_volume |
26 |
container_issue |
2-3 |
container_start_page |
273 |
op_container_end_page |
284 |
_version_ |
1766257041806983168 |
spelling |
ftunivnantes:oai:HAL:insu-00375520v1 2023-05-15T13:52:37+02:00 The glacial inception as recorded in the NorthGRIP Greenland ice core: timing, structure and associated abrupt temperature Landais, Amaelle Masson-Delmotte, Valérie Jouzel, Jean Raynaud, Dominique Johnsen, Sigfus Huber, Christof Leuenberger, Markus Schwander, Jakob Minster, Bénédicte Institute of Earth Sciences Hebrew University Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) 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)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 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) Geophysics and Water Resources Section for Geology Copenhagen Department of Geosciences and Natural Resource Management Copenhagen (IGN) 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)-Department of Geosciences and Natural Resource Management Copenhagen (IGN) University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Physics Institute University of Bern European Commission : POP project (EVK2-2000-22067) 2006 https://hal-insu.archives-ouvertes.fr/insu-00375520 https://doi.org/10.1007/s00382-005-0063-y en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-005-0063-y insu-00375520 https://hal-insu.archives-ouvertes.fr/insu-00375520 doi:10.1007/s00382-005-0063-y ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal-insu.archives-ouvertes.fr/insu-00375520 Climate Dynamics, 2006, 26 (2-3), pp.273 à 284. ⟨10.1007/s00382-005-0063-y⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2006 ftunivnantes https://doi.org/10.1007/s00382-005-0063-y 2023-03-01T01:30:52Z International audience The mechanisms involved in the glacial inception are still poorly constrained due to a lack of high resolution and cross-dated climate records at various locations. Using air isotopic measurements in the recently drilled NorthGRIP ice core, we show that no evidence exists for stratigraphic disturbance of the climate record of the last glacial inception (∼123–100 kyears BP) encompassing Dansgaard–Oeschger events (DO) 25, 24 and 23, even if we lack sufficient resolution to completely rule out disturbance over DO 25. We quantify the rapid surface temperature variability over DO 23 and 24 with associated warmings of 10±2.5 and 16±2.5°C, amplitudes which mimic those observed in full glacial conditions. We use records of δ18O of O2 to propose a common timescale for the NorthGRIP and the Antarctic Vostok ice cores, with a maximum uncertainty of 2,500 years, and to examine the interhemispheric sequence of events over this period. After a synchronous North–South temperature decrease, the onset of rapid events is triggered in the North through DO 25. As for later events, DO 24 and 23 have a clear Antarctic counterpart which does not seem to be the case for the very first abrupt warming (DO 25). This information, when added to intermediate levels of CO2 and to the absence of clear ice rafting associated with DO 25, highlights the uniqueness of this first event, while DO 24 and 23 appear similar to typical full glacial DO events. Article in Journal/Newspaper Antarc* Antarctic Dansgaard-Oeschger events Greenland Greenland ice core ice core Université de Nantes: HAL-UNIV-NANTES Antarctic The Antarctic Greenland Climate Dynamics 26 2-3 273 284 |