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...
Published in: | Climate of the Past |
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2011
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Online Access: | http://hdl.handle.net/11590/353580 https://doi.org/10.5194/cp-7-397-2011 |
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ftunivroma3iris:oai:iris.uniroma3.it:11590/353580 2024-02-11T09:58:41+01:00 A comparison of the present and last interglacial periods in six Antarctic ice cores Masson-Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallee H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. Stenni B. Uemura R. Vimeux F. Masson-Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, M. Gallee, H. Jouzel, J. Krinner, G. Landais, A. Motoyama, H. Oerter, H. Pol, K. Pollard, D. Ritz, C. Schlosser, E. Sime, L. C. Sodemann, H. Stenni, B. Uemura, R. Vimeux, F. 2011 http://hdl.handle.net/11590/353580 https://doi.org/10.5194/cp-7-397-2011 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000292247800005 volume:7 issue:2 firstpage:397 lastpage:423 numberofpages:27 journal:CLIMATE OF THE PAST http://hdl.handle.net/11590/353580 doi:10.5194/cp-7-397-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79955512420 info:eu-repo/semantics/article 2011 ftunivroma3iris https://doi.org/10.5194/cp-7-397-2011 2024-01-24T17:41:54Z 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. © 2011 Author(s). Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica EPICA ice core Ice Sheet Sea ice Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic East Antarctica Dronning Maud Land Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) 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 |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
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. © 2011 Author(s). |
author2 |
Masson-Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, M. Gallee, H. Jouzel, J. Krinner, G. Landais, A. Motoyama, H. Oerter, H. Pol, K. Pollard, D. Ritz, C. Schlosser, E. Sime, L. C. Sodemann, H. Stenni, B. Uemura, R. Vimeux, F. |
format |
Article in Journal/Newspaper |
author |
Masson-Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallee H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. Stenni B. Uemura R. Vimeux F. |
spellingShingle |
Masson-Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallee H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. 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 M. Gallee H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. 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 |
http://hdl.handle.net/11590/353580 https://doi.org/10.5194/cp-7-397-2011 |
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 East Antarctica Dronning Maud Land Dome Fuji Talos Dome Taylor Dome |
geographic_facet |
Antarctic East Antarctica Dronning Maud Land Dome Fuji 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_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000292247800005 volume:7 issue:2 firstpage:397 lastpage:423 numberofpages:27 journal:CLIMATE OF THE PAST http://hdl.handle.net/11590/353580 doi:10.5194/cp-7-397-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79955512420 |
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 |
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1790594403067232256 |