Antarctic surface temperature and elevation during the Last Glacial Maximum
Water-stable isotopes in polar ice cores are a widely used temperature proxy in paleoclimate reconstruction, yet calibration remains challenging in East Antarctica. Here, we reconstruct the magnitude and spatial pattern of Last Glacial Maximum surface cooling in Antarctica using borehole thermometry...
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Online Access: | https://doi.org/10.1126/science.abd2897 |
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ftncar:oai:drupal-site.org:articles_24471 2024-04-28T07:56:37+00:00 Antarctic surface temperature and elevation during the Last Glacial Maximum Buizert, Christo (author) Fudge, T. J. (author) Roberts, William H. G. (author) Steig, Eric J. (author) Sherriff-Tadano, Sam (author) Ritz, Catherine (author) Lefebvre, Eric (author) Edwards, Jon (author) Kawamura, Kenji (author) Oyabu, Ikumi (author) Motoyama, Hideaki (author) Kahle, Emma C. (author) Jones, Tyler R. (author) Abe-Ouchi, Ayako (author) Obase, Takashi (author) Martin, Carlos (author) Corr, Hugh (author) Severinghaus, Jeffrey P. (author) Beaudette, Ross (author) Epifanio, Jenna A. (author) Brook, Edward J. (author) Martin, Kaden (author) Chappellaz, Jérôme (author) Aoki, Shuji (author) Nakazawa, Takakiyo (author) Sowers, Todd A. (author) Alley, Richard B. (author) Ahn, Jinho (author) Sigl, Michael (author) Severi, Mirko (author) Dunbar, Nelia W. (author) Svensson, Anders (author) Fegyveresi, John M. (author) He, Chengfei (author) Liu, Zhengyu (author) Zhu, Jiang (author) Otto-Bliesner, Bette L. (author) Lipenkov, Vladimir Y. (author) Kageyama, Masa (author) Schwander, Jakob (author) 2021-06-04 https://doi.org/10.1126/science.abd2897 en eng Science--Science--0036-8075--1095-9203 articles:24471 ark:/85065/d70868rb doi:10.1126/science.abd2897 Copyright 2021 The Authors article Text 2021 ftncar https://doi.org/10.1126/science.abd2897 2024-04-04T17:33:50Z Water-stable isotopes in polar ice cores are a widely used temperature proxy in paleoclimate reconstruction, yet calibration remains challenging in East Antarctica. Here, we reconstruct the magnitude and spatial pattern of Last Glacial Maximum surface cooling in Antarctica using borehole thermometry and firn properties in seven ice cores. West Antarctic sites cooled similar to 10 degrees C relative to the preindustrial period. East Antarctic sites show a range from similar to 4 degrees to similar to 7 degrees C cooling, which is consistent with the results of global climate models when the effects of topographic changes indicated with ice core air-content data are included, but less than those indicated with the use of water-stable isotopes calibrated against modern spatial gradients. An altered Antarctic temperature inversion during the glacial reconciles our estimates with water-isotope observations. 1852977 Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Science 372 6546 1097 1101 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Water-stable isotopes in polar ice cores are a widely used temperature proxy in paleoclimate reconstruction, yet calibration remains challenging in East Antarctica. Here, we reconstruct the magnitude and spatial pattern of Last Glacial Maximum surface cooling in Antarctica using borehole thermometry and firn properties in seven ice cores. West Antarctic sites cooled similar to 10 degrees C relative to the preindustrial period. East Antarctic sites show a range from similar to 4 degrees to similar to 7 degrees C cooling, which is consistent with the results of global climate models when the effects of topographic changes indicated with ice core air-content data are included, but less than those indicated with the use of water-stable isotopes calibrated against modern spatial gradients. An altered Antarctic temperature inversion during the glacial reconciles our estimates with water-isotope observations. 1852977 |
author2 |
Buizert, Christo (author) Fudge, T. J. (author) Roberts, William H. G. (author) Steig, Eric J. (author) Sherriff-Tadano, Sam (author) Ritz, Catherine (author) Lefebvre, Eric (author) Edwards, Jon (author) Kawamura, Kenji (author) Oyabu, Ikumi (author) Motoyama, Hideaki (author) Kahle, Emma C. (author) Jones, Tyler R. (author) Abe-Ouchi, Ayako (author) Obase, Takashi (author) Martin, Carlos (author) Corr, Hugh (author) Severinghaus, Jeffrey P. (author) Beaudette, Ross (author) Epifanio, Jenna A. (author) Brook, Edward J. (author) Martin, Kaden (author) Chappellaz, Jérôme (author) Aoki, Shuji (author) Nakazawa, Takakiyo (author) Sowers, Todd A. (author) Alley, Richard B. (author) Ahn, Jinho (author) Sigl, Michael (author) Severi, Mirko (author) Dunbar, Nelia W. (author) Svensson, Anders (author) Fegyveresi, John M. (author) He, Chengfei (author) Liu, Zhengyu (author) Zhu, Jiang (author) Otto-Bliesner, Bette L. (author) Lipenkov, Vladimir Y. (author) Kageyama, Masa (author) Schwander, Jakob (author) |
format |
Article in Journal/Newspaper |
title |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
spellingShingle |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
title_short |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
title_full |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
title_fullStr |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
title_full_unstemmed |
Antarctic surface temperature and elevation during the Last Glacial Maximum |
title_sort |
antarctic surface temperature and elevation during the last glacial maximum |
publishDate |
2021 |
url |
https://doi.org/10.1126/science.abd2897 |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core |
op_relation |
Science--Science--0036-8075--1095-9203 articles:24471 ark:/85065/d70868rb doi:10.1126/science.abd2897 |
op_rights |
Copyright 2021 The Authors |
op_doi |
https://doi.org/10.1126/science.abd2897 |
container_title |
Science |
container_volume |
372 |
container_issue |
6546 |
container_start_page |
1097 |
op_container_end_page |
1101 |
_version_ |
1797584099560390656 |