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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American Association for the Advancement of Science
2021
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Online Access: | https://boris.unibe.ch/159961/1/Buizert_2021_accepted.pdf https://boris.unibe.ch/159961/2/Buizert_2021_Science.pdf https://boris.unibe.ch/159961/ |
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ftunivbern:oai:boris.unibe.ch:159961 2023-08-20T04:02:31+02:00 Antarctic surface temperature and elevation during the Last Glacial Maximum Buizert, Christo Fudge, T. J. Roberts, William H. G. Steig, Eric J. Sherriff-Tadano, Sam Ritz, Catherine Lefebvre, Eric Edwards, Jon Kawamura, Kenji Oyabu, Ikumi Motoyama, Hideaki Kahle, Emma C. Jones, Tyler R. Abe-Ouchi, Ayako Obase, Takashi Martin, Carlos Corr, Hugh Severinghaus, Jeffrey P. Beaudette, Ross Epifanio, Jenna A. Brook, Edward J. Martin, Kaden Chappellaz, Jérôme Aoki, Shuji Nakazawa, Takakiyo Sowers, Todd A. Alley, Richard B. Ahn, Jinho Sigl, Michael Severi, Mirko Dunbar, Nelia W. Svensson, Anders Fegyveresi, John M. He, Chengfei Liu, Zhengyu Zhu, Jiang Otto-Bliesner, Bette L. Lipenkov, Vladimir Y. Kageyama, Masa Schwander, Jakob 2021-06-04 application/pdf https://boris.unibe.ch/159961/1/Buizert_2021_accepted.pdf https://boris.unibe.ch/159961/2/Buizert_2021_Science.pdf https://boris.unibe.ch/159961/ eng eng American Association for the Advancement of Science https://boris.unibe.ch/159961/ info:eu-repo/semantics/restrictedAccess Buizert, Christo; Fudge, T. J.; Roberts, William H. G.; Steig, Eric J.; Sherriff-Tadano, Sam; Ritz, Catherine; Lefebvre, Eric; Edwards, Jon; Kawamura, Kenji; Oyabu, Ikumi; Motoyama, Hideaki; Kahle, Emma C.; Jones, Tyler R.; Abe-Ouchi, Ayako; Obase, Takashi; Martin, Carlos; Corr, Hugh; Severinghaus, Jeffrey P.; Beaudette, Ross; Epifanio, Jenna A.; . (2021). Antarctic surface temperature and elevation during the Last Glacial Maximum. Science, 372(6546), pp. 1097-1101. American Association for the Advancement of Science 10.1126/science.abd2897 <http://dx.doi.org/10.1126/science.abd2897> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2021 ftunivbern https://doi.org/10.1126/science.abd2897 2023-07-31T22:09:00Z 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 ~10°C relative to the preindustrial period. East Antarctic sites show a range from ~4° to ~7°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. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core BORIS (Bern Open Repository and Information System, University of Bern) Antarctic East Antarctica Science 372 6546 1097 1101 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Buizert, Christo Fudge, T. J. Roberts, William H. G. Steig, Eric J. Sherriff-Tadano, Sam Ritz, Catherine Lefebvre, Eric Edwards, Jon Kawamura, Kenji Oyabu, Ikumi Motoyama, Hideaki Kahle, Emma C. Jones, Tyler R. Abe-Ouchi, Ayako Obase, Takashi Martin, Carlos Corr, Hugh Severinghaus, Jeffrey P. Beaudette, Ross Epifanio, Jenna A. Brook, Edward J. Martin, Kaden Chappellaz, Jérôme Aoki, Shuji Nakazawa, Takakiyo Sowers, Todd A. Alley, Richard B. Ahn, Jinho Sigl, Michael Severi, Mirko Dunbar, Nelia W. Svensson, Anders Fegyveresi, John M. He, Chengfei Liu, Zhengyu Zhu, Jiang Otto-Bliesner, Bette L. Lipenkov, Vladimir Y. Kageyama, Masa Schwander, Jakob Antarctic surface temperature and elevation during the Last Glacial Maximum |
topic_facet |
530 Physics |
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 ~10°C relative to the preindustrial period. East Antarctic sites show a range from ~4° to ~7°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. |
format |
Article in Journal/Newspaper |
author |
Buizert, Christo Fudge, T. J. Roberts, William H. G. Steig, Eric J. Sherriff-Tadano, Sam Ritz, Catherine Lefebvre, Eric Edwards, Jon Kawamura, Kenji Oyabu, Ikumi Motoyama, Hideaki Kahle, Emma C. Jones, Tyler R. Abe-Ouchi, Ayako Obase, Takashi Martin, Carlos Corr, Hugh Severinghaus, Jeffrey P. Beaudette, Ross Epifanio, Jenna A. Brook, Edward J. Martin, Kaden Chappellaz, Jérôme Aoki, Shuji Nakazawa, Takakiyo Sowers, Todd A. Alley, Richard B. Ahn, Jinho Sigl, Michael Severi, Mirko Dunbar, Nelia W. Svensson, Anders Fegyveresi, John M. He, Chengfei Liu, Zhengyu Zhu, Jiang Otto-Bliesner, Bette L. Lipenkov, Vladimir Y. Kageyama, Masa Schwander, Jakob |
author_facet |
Buizert, Christo Fudge, T. J. Roberts, William H. G. Steig, Eric J. Sherriff-Tadano, Sam Ritz, Catherine Lefebvre, Eric Edwards, Jon Kawamura, Kenji Oyabu, Ikumi Motoyama, Hideaki Kahle, Emma C. Jones, Tyler R. Abe-Ouchi, Ayako Obase, Takashi Martin, Carlos Corr, Hugh Severinghaus, Jeffrey P. Beaudette, Ross Epifanio, Jenna A. Brook, Edward J. Martin, Kaden Chappellaz, Jérôme Aoki, Shuji Nakazawa, Takakiyo Sowers, Todd A. Alley, Richard B. Ahn, Jinho Sigl, Michael Severi, Mirko Dunbar, Nelia W. Svensson, Anders Fegyveresi, John M. He, Chengfei Liu, Zhengyu Zhu, Jiang Otto-Bliesner, Bette L. Lipenkov, Vladimir Y. Kageyama, Masa Schwander, Jakob |
author_sort |
Buizert, Christo |
title |
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 |
publisher |
American Association for the Advancement of Science |
publishDate |
2021 |
url |
https://boris.unibe.ch/159961/1/Buizert_2021_accepted.pdf https://boris.unibe.ch/159961/2/Buizert_2021_Science.pdf https://boris.unibe.ch/159961/ |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core |
op_source |
Buizert, Christo; Fudge, T. J.; Roberts, William H. G.; Steig, Eric J.; Sherriff-Tadano, Sam; Ritz, Catherine; Lefebvre, Eric; Edwards, Jon; Kawamura, Kenji; Oyabu, Ikumi; Motoyama, Hideaki; Kahle, Emma C.; Jones, Tyler R.; Abe-Ouchi, Ayako; Obase, Takashi; Martin, Carlos; Corr, Hugh; Severinghaus, Jeffrey P.; Beaudette, Ross; Epifanio, Jenna A.; . (2021). Antarctic surface temperature and elevation during the Last Glacial Maximum. Science, 372(6546), pp. 1097-1101. American Association for the Advancement of Science 10.1126/science.abd2897 <http://dx.doi.org/10.1126/science.abd2897> |
op_relation |
https://boris.unibe.ch/159961/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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_ |
1774713006030061568 |