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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Copernicus Publications
2011
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ftdoajarticles:oai:doaj.org/article:fe40bcb848f94bee873455fc96b7219b 2023-05-15T13:52:26+02:00 A comparison of the present and last interglacial periods in six Antarctic ice cores V. Masson-Delmotte D. Buiron A. Ekaykin M. Frezzotti H. Gallée J. Jouzel G. Krinner A. Landais H. Motoyama H. Oerter K. Pol D. Pollard C. Ritz E. Schlosser L. C. Sime H. Sodemann B. Stenni R. Uemura F. Vimeux 2011-04-01T00:00:00Z https://doi.org/10.5194/cp-7-397-2011 https://doaj.org/article/fe40bcb848f94bee873455fc96b7219b EN eng Copernicus Publications http://www.clim-past.net/7/397/2011/cp-7-397-2011.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-7-397-2011 1814-9324 1814-9332 https://doaj.org/article/fe40bcb848f94bee873455fc96b7219b Climate of the Past, Vol 7, Iss 2, Pp 397-423 (2011) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2011 ftdoajarticles https://doi.org/10.5194/cp-7-397-2011 2022-12-31T07:15:43Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica EPICA ice core Ice Sheet Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dronning Maud Land East Antarctica Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Taylor Dome ENVELOPE(157.667,157.667,-77.667,-77.667) Climate of the Past 7 2 397 423 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 V. Masson-Delmotte D. Buiron A. Ekaykin M. Frezzotti H. Gallée J. Jouzel G. Krinner A. Landais H. Motoyama H. Oerter K. Pol D. Pollard C. Ritz E. Schlosser L. C. Sime H. Sodemann B. Stenni R. Uemura F. Vimeux A comparison of the present and last interglacial periods in six Antarctic ice cores |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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. |
format |
Article in Journal/Newspaper |
author |
V. Masson-Delmotte D. Buiron A. Ekaykin M. Frezzotti H. Gallée J. Jouzel G. Krinner A. Landais H. Motoyama H. Oerter K. Pol D. Pollard C. Ritz E. Schlosser L. C. Sime H. Sodemann B. Stenni R. Uemura F. Vimeux |
author_facet |
V. Masson-Delmotte D. Buiron A. Ekaykin M. Frezzotti H. Gallée J. Jouzel G. Krinner A. Landais H. Motoyama H. Oerter K. Pol D. Pollard C. Ritz E. Schlosser L. C. Sime H. Sodemann B. Stenni R. Uemura F. Vimeux |
author_sort |
V. Masson-Delmotte |
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 |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/cp-7-397-2011 https://doaj.org/article/fe40bcb848f94bee873455fc96b7219b |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(158.000,158.000,-73.000,-73.000) ENVELOPE(157.667,157.667,-77.667,-77.667) |
geographic |
Antarctic Dome Fuji Dronning Maud Land East Antarctica Talos Dome Taylor Dome |
geographic_facet |
Antarctic Dome Fuji Dronning Maud Land East Antarctica Talos Dome Taylor Dome |
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 |
Climate of the Past, Vol 7, Iss 2, Pp 397-423 (2011) |
op_relation |
http://www.clim-past.net/7/397/2011/cp-7-397-2011.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-7-397-2011 1814-9324 1814-9332 https://doaj.org/article/fe40bcb848f94bee873455fc96b7219b |
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_ |
1766256713221013504 |