A comparison of the present and last interglacial periods in six Antarctic ice cores
We compare the present and last interglacial periods as recorded in Antarctic water stable isotope records now available at various temporal resolutions from six East Antarctic ice cores: Vostok, Taylor Dome, EPICA Dome C (EDC), EPICA Dronning Maud Land (EDML), Dome Fuji and the recent TALDICE ice c...
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ftnilu:oai:nilu.brage.unit.no:11250/2651006 2024-09-15T17:46:59+00:00 A comparison of the present and last interglacial periods in six Antarctic ice cores Masson-Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, Massimo Gallée, H Jouzel, J Krinner, G. Landais, A Motoyama, H Oerter, H Pol, K Pollard, David Ritz, C Schlosser, E Sime, LC Sodemann, Harald Stenni, B Uemura, R Vimeux, F 2011 application/pdf https://hdl.handle.net/11250/2651006 https://doi.org/10.5194/cp-7-397-2011 eng eng EC/FP7/243908 Climate of the Past. 2011, 7 (2), 397-423. urn:issn:1814-9324 https://hdl.handle.net/11250/2651006 https://doi.org/10.5194/cp-7-397-2011 cristin:851926 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Author(s) 2011. 397-423 7 Climate of the Past 2 Peer reviewed Journal article 2011 ftnilu https://doi.org/10.5194/cp-7-397-2011 2024-06-25T03:02:41Z We compare the present and last interglacial periods as recorded in Antarctic water stable isotope records now available at various temporal resolutions from six East Antarctic ice cores: Vostok, Taylor Dome, EPICA Dome C (EDC), EPICA Dronning Maud Land (EDML), Dome Fuji and the recent TALDICE ice core from Talos Dome. We first review the different modern site characteristics in terms of ice flow, meteorological conditions, precipitation intermittency and moisture origin, as depicted by meteorological data, atmospheric reanalyses and Lagrangian moisture source diagnostics. These different factors can indeed alter the relationships between temperature and water stable isotopes. Using five records with sufficient resolution on the EDC3 age scale, common features are quantified through principal component analyses. Consistent with instrumental records and atmospheric model results, the ice core data depict rather coherent and homogenous patterns in East Antarctica during the last two interglacials. Across the East Antarctic plateau, regional differences, with respect to the common East Antarctic signal, appear to have similar patterns during the current and last interglacials. We identify two abrupt shifts in isotopic records during the glacial inception at TALDICE and EDML, likely caused by regional sea ice expansion. These regional differences are discussed in terms of moisture origin and in terms of past changes in local elevation histories, which are compared to ice sheet model results. Our results suggest that elevation changes may contribute significantly to inter-site differences. These elevation changes may be underestimated by current ice sheet models. publishedVersion Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica EPICA ice core Ice Sheet Sea ice NILU – Norwegian Institute for Air Research: NILU Brage Climate of the Past 7 2 397 423 |
institution |
Open Polar |
collection |
NILU – Norwegian Institute for Air Research: NILU Brage |
op_collection_id |
ftnilu |
language |
English |
description |
We compare the present and last interglacial periods as recorded in Antarctic water stable isotope records now available at various temporal resolutions from six East Antarctic ice cores: Vostok, Taylor Dome, EPICA Dome C (EDC), EPICA Dronning Maud Land (EDML), Dome Fuji and the recent TALDICE ice core from Talos Dome. We first review the different modern site characteristics in terms of ice flow, meteorological conditions, precipitation intermittency and moisture origin, as depicted by meteorological data, atmospheric reanalyses and Lagrangian moisture source diagnostics. These different factors can indeed alter the relationships between temperature and water stable isotopes. Using five records with sufficient resolution on the EDC3 age scale, common features are quantified through principal component analyses. Consistent with instrumental records and atmospheric model results, the ice core data depict rather coherent and homogenous patterns in East Antarctica during the last two interglacials. Across the East Antarctic plateau, regional differences, with respect to the common East Antarctic signal, appear to have similar patterns during the current and last interglacials. We identify two abrupt shifts in isotopic records during the glacial inception at TALDICE and EDML, likely caused by regional sea ice expansion. These regional differences are discussed in terms of moisture origin and in terms of past changes in local elevation histories, which are compared to ice sheet model results. Our results suggest that elevation changes may contribute significantly to inter-site differences. These elevation changes may be underestimated by current ice sheet models. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Masson-Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, Massimo Gallée, H Jouzel, J Krinner, G. Landais, A Motoyama, H Oerter, H Pol, K Pollard, David Ritz, C Schlosser, E Sime, LC Sodemann, Harald Stenni, B Uemura, R Vimeux, F |
spellingShingle |
Masson-Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, Massimo Gallée, H Jouzel, J Krinner, G. Landais, A Motoyama, H Oerter, H Pol, K Pollard, David Ritz, C Schlosser, E Sime, LC Sodemann, Harald Stenni, B Uemura, R Vimeux, F A comparison of the present and last interglacial periods in six Antarctic ice cores |
author_facet |
Masson-Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, Massimo Gallée, H Jouzel, J Krinner, G. Landais, A Motoyama, H Oerter, H Pol, K Pollard, David Ritz, C Schlosser, E Sime, LC Sodemann, Harald Stenni, B Uemura, R Vimeux, F |
author_sort |
Masson-Delmotte, V. |
title |
A comparison of the present and last interglacial periods in six Antarctic ice cores |
title_short |
A comparison of the present and last interglacial periods in six Antarctic ice cores |
title_full |
A comparison of the present and last interglacial periods in six Antarctic ice cores |
title_fullStr |
A comparison of the present and last interglacial periods in six Antarctic ice cores |
title_full_unstemmed |
A comparison of the present and last interglacial periods in six Antarctic ice cores |
title_sort |
comparison of the present and last interglacial periods in six antarctic ice cores |
publishDate |
2011 |
url |
https://hdl.handle.net/11250/2651006 https://doi.org/10.5194/cp-7-397-2011 |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica EPICA ice core Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica EPICA ice core Ice Sheet Sea ice |
op_source |
397-423 7 Climate of the Past 2 |
op_relation |
EC/FP7/243908 Climate of the Past. 2011, 7 (2), 397-423. urn:issn:1814-9324 https://hdl.handle.net/11250/2651006 https://doi.org/10.5194/cp-7-397-2011 cristin:851926 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Author(s) 2011. |
op_doi |
https://doi.org/10.5194/cp-7-397-2011 |
container_title |
Climate of the Past |
container_volume |
7 |
container_issue |
2 |
container_start_page |
397 |
op_container_end_page |
423 |
_version_ |
1810495449280282624 |