Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer

Stable water isotope records from Antarctica are key for our understanding of Quaternary climate variations. However, the exact quantitative interpretation of these important climate proxy records in terms of surface temperature, ice sheet height and other climatic changes is still a matter of debat...

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Published in:Nature Communications
Main Authors: Werner, Martin, Jouzel, Jean, Masson-Delmotte, Valérie, Lohmann, Gerrit
Format: Text
Language:English
Published: Nature Publishing Group UK 2018
Subjects:
Article
Antarctic
Antarc*
Antarctica
ice core
Ice Sheet
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6117368/
http://www.ncbi.nlm.nih.gov/pubmed/30166550
https://doi.org/10.1038/s41467-018-05430-y
id ftpubmed:oai:pubmedcentral.nih.gov:6117368
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spelling ftpubmed:oai:pubmedcentral.nih.gov:6117368 2023-05-15T13:51:43+02:00 Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer Werner, Martin Jouzel, Jean Masson-Delmotte, Valérie Lohmann, Gerrit 2018-08-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6117368/ http://www.ncbi.nlm.nih.gov/pubmed/30166550 https://doi.org/10.1038/s41467-018-05430-y en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6117368/ http://www.ncbi.nlm.nih.gov/pubmed/30166550 http://dx.doi.org/10.1038/s41467-018-05430-y © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-05430-y 2018-09-09T00:16:18Z Stable water isotope records from Antarctica are key for our understanding of Quaternary climate variations. However, the exact quantitative interpretation of these important climate proxy records in terms of surface temperature, ice sheet height and other climatic changes is still a matter of debate. Here we report results obtained with an atmospheric general circulation model equipped with water isotopes, run at a high-spatial horizontal resolution of one-by-one degree. Comparing different glacial maximum ice sheet reconstructions, a best model data match is achieved for the PMIP3 reconstruction. Reduced West Antarctic elevation changes between 400 and 800 m lead to further improved agreement with ice core data. Our modern and glacial climate simulations support the validity of the isotopic paleothermometer approach based on the use of present-day observations and reveal that a glacial ocean state as displayed in the GLAMAP reconstruction is suitable for capturing the observed glacial isotope changes in Antarctic ice cores. Text Antarc* Antarctic Antarctica ice core Ice Sheet PubMed Central (PMC) Antarctic Nature Communications 9 1
institution Open Polar
collection PubMed Central (PMC)
op_collection_id ftpubmed
language English
topic Article
spellingShingle Article
Werner, Martin
Jouzel, Jean
Masson-Delmotte, Valérie
Lohmann, Gerrit
Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
topic_facet Article
description Stable water isotope records from Antarctica are key for our understanding of Quaternary climate variations. However, the exact quantitative interpretation of these important climate proxy records in terms of surface temperature, ice sheet height and other climatic changes is still a matter of debate. Here we report results obtained with an atmospheric general circulation model equipped with water isotopes, run at a high-spatial horizontal resolution of one-by-one degree. Comparing different glacial maximum ice sheet reconstructions, a best model data match is achieved for the PMIP3 reconstruction. Reduced West Antarctic elevation changes between 400 and 800 m lead to further improved agreement with ice core data. Our modern and glacial climate simulations support the validity of the isotopic paleothermometer approach based on the use of present-day observations and reveal that a glacial ocean state as displayed in the GLAMAP reconstruction is suitable for capturing the observed glacial isotope changes in Antarctic ice cores.
format Text
author Werner, Martin
Jouzel, Jean
Masson-Delmotte, Valérie
Lohmann, Gerrit
author_facet Werner, Martin
Jouzel, Jean
Masson-Delmotte, Valérie
Lohmann, Gerrit
author_sort Werner, Martin
title Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
title_short Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
title_full Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
title_fullStr Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
title_full_unstemmed Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
title_sort reconciling glacial antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer
publisher Nature Publishing Group UK
publishDate 2018
url http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6117368/
http://www.ncbi.nlm.nih.gov/pubmed/30166550
https://doi.org/10.1038/s41467-018-05430-y
geographic Antarctic
geographic_facet Antarctic
genre Antarc*
Antarctic
Antarctica
ice core
Ice Sheet
genre_facet Antarc*
Antarctic
Antarctica
ice core
Ice Sheet
op_relation http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6117368/
http://www.ncbi.nlm.nih.gov/pubmed/30166550
http://dx.doi.org/10.1038/s41467-018-05430-y
op_rights © The Author(s) 2018
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
op_rightsnorm CC-BY
op_doi https://doi.org/10.1038/s41467-018-05430-y
container_title Nature Communications
container_volume 9
container_issue 1
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