A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements
A precise synchronization of different climate records is indispensable for a correct dynamical interpretation of paleoclimatic data. A chronology for the TALDICE ice core from the Ross Sea sector of East Antarctica has recently been presented based on methane synchronization with Greenland and the...
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ftunivbern:oai:boris.unibe.ch:10127 2023-08-20T04:02:30+02:00 A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements Schüpbach, Simon Federer, Urs Bigler, Matthias Fischer, Hubertus Stocker, Thomas F. 2011 application/pdf https://boris.unibe.ch/10127/1/cp-7-1001-2011.pdf https://boris.unibe.ch/10127/ eng eng Copernicus Publications https://boris.unibe.ch/10127/ info:eu-repo/semantics/openAccess Schüpbach, Simon; Federer, Urs; Bigler, Matthias; Fischer, Hubertus; Stocker, Thomas F. (2011). A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements. Climate of the past, 7(3), pp. 1001-1009. Göttingen: Copernicus Publications 10.5194/cp-7-1001-2011 <http://dx.doi.org/10.5194/cp-7-1001-2011> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2011 ftunivbern https://doi.org/10.5194/cp-7-1001-2011 2023-07-31T20:33:35Z A precise synchronization of different climate records is indispensable for a correct dynamical interpretation of paleoclimatic data. A chronology for the TALDICE ice core from the Ross Sea sector of East Antarctica has recently been presented based on methane synchronization with Greenland and the EDC ice cores and δ18Oice synchronization with EDC in the bottom part (TALDICE-1). Using new high-resolution methane data obtained with a continuous flow analysis technique, we present a refined age scale for the age interval from 55–112 thousand years (ka) before present, where TALDICE is synchronized with EDC. New and more precise tie points reduce the uncertainties of the age scale from up to 1900 yr in TALDICE-1 to below 1100 yr over most of the refined interval and shift the Talos Dome dating to significantly younger ages during the onset of Marine Isotope Stage 3. Thus, discussions of climate dynamics at sub-millennial time scales are now possible back to 110 ka, in particular during the inception of the last ice age. Calcium data of EDC and TALDICE are compared to show the impact of the refinement to the synchronization of the two ice cores not only for the gas but also for the ice age scale. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Greenland ice core Ross Sea BORIS (Bern Open Repository and Information System, University of Bern) East Antarctica Greenland Ross Sea Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Climate of the Past 7 3 1001 1009 |
institution |
Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Schüpbach, Simon Federer, Urs Bigler, Matthias Fischer, Hubertus Stocker, Thomas F. A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements |
topic_facet |
530 Physics |
description |
A precise synchronization of different climate records is indispensable for a correct dynamical interpretation of paleoclimatic data. A chronology for the TALDICE ice core from the Ross Sea sector of East Antarctica has recently been presented based on methane synchronization with Greenland and the EDC ice cores and δ18Oice synchronization with EDC in the bottom part (TALDICE-1). Using new high-resolution methane data obtained with a continuous flow analysis technique, we present a refined age scale for the age interval from 55–112 thousand years (ka) before present, where TALDICE is synchronized with EDC. New and more precise tie points reduce the uncertainties of the age scale from up to 1900 yr in TALDICE-1 to below 1100 yr over most of the refined interval and shift the Talos Dome dating to significantly younger ages during the onset of Marine Isotope Stage 3. Thus, discussions of climate dynamics at sub-millennial time scales are now possible back to 110 ka, in particular during the inception of the last ice age. Calcium data of EDC and TALDICE are compared to show the impact of the refinement to the synchronization of the two ice cores not only for the gas but also for the ice age scale. |
format |
Article in Journal/Newspaper |
author |
Schüpbach, Simon Federer, Urs Bigler, Matthias Fischer, Hubertus Stocker, Thomas F. |
author_facet |
Schüpbach, Simon Federer, Urs Bigler, Matthias Fischer, Hubertus Stocker, Thomas F. |
author_sort |
Schüpbach, Simon |
title |
A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements |
title_short |
A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements |
title_full |
A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements |
title_fullStr |
A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements |
title_full_unstemmed |
A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements |
title_sort |
refined taldice-1a age scale from 55 to 112 ka before present for the talos dome ice core based on high-resolution methane measurements |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://boris.unibe.ch/10127/1/cp-7-1001-2011.pdf https://boris.unibe.ch/10127/ |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
East Antarctica Greenland Ross Sea Talos Dome |
geographic_facet |
East Antarctica Greenland Ross Sea Talos Dome |
genre |
Antarc* Antarctica East Antarctica Greenland ice core Ross Sea |
genre_facet |
Antarc* Antarctica East Antarctica Greenland ice core Ross Sea |
op_source |
Schüpbach, Simon; Federer, Urs; Bigler, Matthias; Fischer, Hubertus; Stocker, Thomas F. (2011). A refined TALDICE-1a age scale from 55 to 112 ka before present for the Talos Dome ice core based on high-resolution methane measurements. Climate of the past, 7(3), pp. 1001-1009. Göttingen: Copernicus Publications 10.5194/cp-7-1001-2011 <http://dx.doi.org/10.5194/cp-7-1001-2011> |
op_relation |
https://boris.unibe.ch/10127/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-7-1001-2011 |
container_title |
Climate of the Past |
container_volume |
7 |
container_issue |
3 |
container_start_page |
1001 |
op_container_end_page |
1009 |
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1774712987793227776 |