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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2011
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fttriple:oai:gotriple.eu:oai:doaj.org/article:53b813301c7f4e079d522add71d607e8 2023-05-15T13:36:06+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 S. Schüpbach U. Federer M. Bigler H. Fischer T. F. Stocker 2011-09-01 https://doi.org/10.5194/cp-7-1001-2011 http://www.clim-past.net/7/1001/2011/cp-7-1001-2011.pdf https://doaj.org/article/53b813301c7f4e079d522add71d607e8 en eng Copernicus Publications doi:10.5194/cp-7-1001-2011 1814-9324 1814-9332 http://www.clim-past.net/7/1001/2011/cp-7-1001-2011.pdf https://doaj.org/article/53b813301c7f4e079d522add71d607e8 undefined Climate of the Past, Vol 7, Iss 3, Pp 1001-1009 (2011) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2011 fttriple https://doi.org/10.5194/cp-7-1001-2011 2023-01-22T18:19:22Z 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 Unknown East Antarctica Greenland Ross Sea Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Climate of the Past 7 3 1001 1009 |
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language |
English |
topic |
envir geo |
spellingShingle |
envir geo S. Schüpbach U. Federer M. Bigler H. Fischer T. F. Stocker 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 |
envir geo |
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 |
S. Schüpbach U. Federer M. Bigler H. Fischer T. F. Stocker |
author_facet |
S. Schüpbach U. Federer M. Bigler H. Fischer T. F. Stocker |
author_sort |
S. Schüpbach |
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://doi.org/10.5194/cp-7-1001-2011 http://www.clim-past.net/7/1001/2011/cp-7-1001-2011.pdf https://doaj.org/article/53b813301c7f4e079d522add71d607e8 |
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 |
Climate of the Past, Vol 7, Iss 3, Pp 1001-1009 (2011) |
op_relation |
doi:10.5194/cp-7-1001-2011 1814-9324 1814-9332 http://www.clim-past.net/7/1001/2011/cp-7-1001-2011.pdf https://doaj.org/article/53b813301c7f4e079d522add71d607e8 |
op_rights |
undefined |
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 |
_version_ |
1766074224414294016 |