The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years
The deep polar ice cores provide reference records commonly employed in global correlation of past climate events. However, temporal divergences reaching up to several thousand years (ka) exist between ice cores over the last climatic cycle. In this context, we are hereby introducing the Antarctic I...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/503415/ https://nora.nerc.ac.uk/id/eprint/503415/1/cp-9-1733-2013.pdf https://doi.org/10.5194/cp-9-1733-2013 |
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ftnerc:oai:nora.nerc.ac.uk:503415 2023-05-15T13:48:08+02:00 The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years Veres, D. Bazin, L. Landais, A. Toyé Mahamadou Kele, H. Lemieux-Dudon, B. Parrenin, F. Martinerie, P. Blayo, E. Blunier, T. Capron, E. Chappellaz, J. Rasmussen, S. O. Severi, M. Svensson, A. Vinther, B. Wolff, E. W. 2013-08 text http://nora.nerc.ac.uk/id/eprint/503415/ https://nora.nerc.ac.uk/id/eprint/503415/1/cp-9-1733-2013.pdf https://doi.org/10.5194/cp-9-1733-2013 en eng Copernicus Publications on behalf of the European Geosciences Union https://nora.nerc.ac.uk/id/eprint/503415/1/cp-9-1733-2013.pdf Veres, D.; Bazin, L.; Landais, A.; Toyé Mahamadou Kele, H.; Lemieux-Dudon, B.; Parrenin, F.; Martinerie, P.; Blayo, E.; Blunier, T.; Capron, E. orcid:0000-0003-0784-1884 Chappellaz, J.; Rasmussen, S. O.; Severi, M.; Svensson, A.; Vinther, B.; Wolff, E. W. 2013 The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years. Climate of the Past, 9 (4). 1733-1748. https://doi.org/10.5194/cp-9-1733-2013 <https://doi.org/10.5194/cp-9-1733-2013> cc_by CC-BY Publication - Article PeerReviewed 2013 ftnerc https://doi.org/10.5194/cp-9-1733-2013 2023-02-04T19:37:50Z The deep polar ice cores provide reference records commonly employed in global correlation of past climate events. However, temporal divergences reaching up to several thousand years (ka) exist between ice cores over the last climatic cycle. In this context, we are hereby introducing the Antarctic Ice Core Chronology 2012 (AICC2012), a new and coherent timescale developed for four Antarctic ice cores, namely Vostok, EPICA Dome C (EDC), EPICA Dronning Maud Land (EDML) and Talos Dome (TALDICE), alongside the Greenlandic NGRIP record. The AICC2012 timescale has been constructed using the Bayesian tool Datice (Lemieux-Dudon et al., 2010) that combines glaciological inputs and data constraints, including a wide range of relative and absolute gas and ice stratigraphic markers. We focus here on the last 120 ka, whereas the companion paper by Bazin et al. (2013) focuses on the interval 120–800 ka. Compared to previous timescales, AICC2012 presents an improved timing for the last glacial inception, respecting the glaciological constraints of all analyzed records. Moreover, with the addition of numerous new stratigraphic markers and improved calculation of the lock-in depth (LID) based on δ15N data employed as the Datice background scenario, the AICC2012 presents a slightly improved timing for the bipolar sequence of events over Marine Isotope Stage 3 associated with the seesaw mechanism, with maximum differences of about 600 yr with respect to the previous Datice-derived chronology of Lemieux-Dudon et al. (2010), hereafter denoted LD2010. Our improved scenario confirms the regional differences for the millennial scale variability over the last glacial period: while the EDC isotopic record (events of triangular shape) displays peaks roughly at the same time as the NGRIP abrupt isotopic increases, the EDML isotopic record (events characterized by broader peaks or even extended periods of high isotope values) reached the isotopic maximum several centuries before. It is expected that the future contribution of both other ... Article in Journal/Newspaper Antarc* Antarctic Dronning Maud Land EPICA greenlandic ice core NGRIP Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Dronning Maud Land Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Climate of the Past 9 4 1733 1748 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The deep polar ice cores provide reference records commonly employed in global correlation of past climate events. However, temporal divergences reaching up to several thousand years (ka) exist between ice cores over the last climatic cycle. In this context, we are hereby introducing the Antarctic Ice Core Chronology 2012 (AICC2012), a new and coherent timescale developed for four Antarctic ice cores, namely Vostok, EPICA Dome C (EDC), EPICA Dronning Maud Land (EDML) and Talos Dome (TALDICE), alongside the Greenlandic NGRIP record. The AICC2012 timescale has been constructed using the Bayesian tool Datice (Lemieux-Dudon et al., 2010) that combines glaciological inputs and data constraints, including a wide range of relative and absolute gas and ice stratigraphic markers. We focus here on the last 120 ka, whereas the companion paper by Bazin et al. (2013) focuses on the interval 120–800 ka. Compared to previous timescales, AICC2012 presents an improved timing for the last glacial inception, respecting the glaciological constraints of all analyzed records. Moreover, with the addition of numerous new stratigraphic markers and improved calculation of the lock-in depth (LID) based on δ15N data employed as the Datice background scenario, the AICC2012 presents a slightly improved timing for the bipolar sequence of events over Marine Isotope Stage 3 associated with the seesaw mechanism, with maximum differences of about 600 yr with respect to the previous Datice-derived chronology of Lemieux-Dudon et al. (2010), hereafter denoted LD2010. Our improved scenario confirms the regional differences for the millennial scale variability over the last glacial period: while the EDC isotopic record (events of triangular shape) displays peaks roughly at the same time as the NGRIP abrupt isotopic increases, the EDML isotopic record (events characterized by broader peaks or even extended periods of high isotope values) reached the isotopic maximum several centuries before. It is expected that the future contribution of both other ... |
format |
Article in Journal/Newspaper |
author |
Veres, D. Bazin, L. Landais, A. Toyé Mahamadou Kele, H. Lemieux-Dudon, B. Parrenin, F. Martinerie, P. Blayo, E. Blunier, T. Capron, E. Chappellaz, J. Rasmussen, S. O. Severi, M. Svensson, A. Vinther, B. Wolff, E. W. |
spellingShingle |
Veres, D. Bazin, L. Landais, A. Toyé Mahamadou Kele, H. Lemieux-Dudon, B. Parrenin, F. Martinerie, P. Blayo, E. Blunier, T. Capron, E. Chappellaz, J. Rasmussen, S. O. Severi, M. Svensson, A. Vinther, B. Wolff, E. W. The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
author_facet |
Veres, D. Bazin, L. Landais, A. Toyé Mahamadou Kele, H. Lemieux-Dudon, B. Parrenin, F. Martinerie, P. Blayo, E. Blunier, T. Capron, E. Chappellaz, J. Rasmussen, S. O. Severi, M. Svensson, A. Vinther, B. Wolff, E. W. |
author_sort |
Veres, D. |
title |
The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
title_short |
The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
title_full |
The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
title_fullStr |
The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
title_full_unstemmed |
The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
title_sort |
antarctic ice core chronology (aicc2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2013 |
url |
http://nora.nerc.ac.uk/id/eprint/503415/ https://nora.nerc.ac.uk/id/eprint/503415/1/cp-9-1733-2013.pdf https://doi.org/10.5194/cp-9-1733-2013 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic The Antarctic Dronning Maud Land Talos Dome |
geographic_facet |
Antarctic The Antarctic Dronning Maud Land Talos Dome |
genre |
Antarc* Antarctic Dronning Maud Land EPICA greenlandic ice core NGRIP |
genre_facet |
Antarc* Antarctic Dronning Maud Land EPICA greenlandic ice core NGRIP |
op_relation |
https://nora.nerc.ac.uk/id/eprint/503415/1/cp-9-1733-2013.pdf Veres, D.; Bazin, L.; Landais, A.; Toyé Mahamadou Kele, H.; Lemieux-Dudon, B.; Parrenin, F.; Martinerie, P.; Blayo, E.; Blunier, T.; Capron, E. orcid:0000-0003-0784-1884 Chappellaz, J.; Rasmussen, S. O.; Severi, M.; Svensson, A.; Vinther, B.; Wolff, E. W. 2013 The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years. Climate of the Past, 9 (4). 1733-1748. https://doi.org/10.5194/cp-9-1733-2013 <https://doi.org/10.5194/cp-9-1733-2013> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-9-1733-2013 |
container_title |
Climate of the Past |
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9 |
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4 |
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1733 |
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1748 |
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1766248686137901056 |