Water stable oxygen isotope records from six Antarctic ice core sites for the present and last interglacial periods, supplement to: Masson-Delmotte, Valerie; Buiron, Daphné; Ekaykin, Alexey A; Frezzotti, Massimo; Gallée, Hubert; Jouzel, Jean; Krinner, Gerhard; Landais, Amaelle; Motoyama, Hideaki; Oerter, Hans; Pol, Katy; Pollard, David; Ritz, Catherine; Schlosser, Elisabeth; Sime, Louise C; Sodemann, Harald; Stenni, Barbara; Uemura, Ryu; Vimeux, Françoise (2011): A comparison of the present and last interglacial periods in six Antarctic ice cores. Climate of the Past, 7, 397-423

DOI

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

Identifier
DOI https://doi.org/10.1594/PANGAEA.785228
Related Identifier https://doi.org/10.5194/cp-7-397-2011
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.785228
Provenance
Creator Masson-Delmotte, Valerie; Buiron, Daphné; Ekaykin, Alexey A; Frezzotti, Massimo; Gallée, Hubert; Jouzel, Jean; Krinner, Gerhard; Landais, Amaelle; Motoyama, Hideaki; Oerter, Hans; Pol, Katy; Pollard, David; Ritz, Catherine; Schlosser, Elisabeth; Sime, Louise C; Sodemann, Harald; Stenni, Barbara; Uemura, Ryu; Vimeux, Françoise
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2011
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Collection of Datasets
Format application/zip
Size 13 datasets
Discipline Earth System Research
Spatial Coverage (0.068W, -78.467S, 159.067E, -72.783N); Antarctica; Dome C, Antarctica
Temporal Coverage Begin 1982-01-01T00:00:00Z
Temporal Coverage End 2008-12-31T00:00:00Z