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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Online Access: | http://hdl.handle.net/11368/2626911 https://doi.org/10.5194/cp-7-397-2011 |
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ftunitriestiris:oai:arts.units.it:11368/2626911 2023-05-15T13:32:20+02:00 A comparison of the present and last interglacial periods in six Antarctic ice cores Masson Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallée H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. Uemura R. Vimeux F. STENNI, BARBARA Masson Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, M. Gallée, 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, Barbara Uemura, R. Vimeux, F. 2011 http://hdl.handle.net/11368/2626911 https://doi.org/10.5194/cp-7-397-2011 eng eng volume:7 firstpage:397 lastpage:423 numberofpages:27 journal:CLIMATE OF THE PAST http://hdl.handle.net/11368/2626911 doi:10.5194/cp-7-397-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79955512420 Ice core East Antarctica isotopic record Holocene Eemian moisture source precipitation intermittency elevation changes info:eu-repo/semantics/article 2011 ftunitriestiris https://doi.org/10.5194/cp-7-397-2011 2023-04-09T06:11:16Z 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 Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) 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 |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
Ice core East Antarctica isotopic record Holocene Eemian moisture source precipitation intermittency elevation changes |
spellingShingle |
Ice core East Antarctica isotopic record Holocene Eemian moisture source precipitation intermittency elevation changes Masson Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallée H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. Uemura R. Vimeux F. STENNI, BARBARA A comparison of the present and last interglacial periods in six Antarctic ice cores |
topic_facet |
Ice core East Antarctica isotopic record Holocene Eemian moisture source precipitation intermittency elevation changes |
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. |
author2 |
Masson Delmotte, V. Buiron, D. Ekaykin, A. Frezzotti, M. Gallée, 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, Barbara Uemura, R. Vimeux, F. |
format |
Article in Journal/Newspaper |
author |
Masson Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallée H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. Uemura R. Vimeux F. STENNI, BARBARA |
author_facet |
Masson Delmotte V. Buiron D. Ekaykin A. Frezzotti M. Gallée H. Jouzel J. Krinner G. Landais A. Motoyama H. Oerter H. Pol K. Pollard D. Ritz C. Schlosser E. Sime L. C. Sodemann H. Uemura R. Vimeux F. STENNI, BARBARA |
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/11368/2626911 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 |
volume:7 firstpage:397 lastpage:423 numberofpages:27 journal:CLIMATE OF THE PAST http://hdl.handle.net/11368/2626911 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 |
_version_ |
1766025915527069696 |