Antarctic surface temperature and elevation during the Last Glacial Maximum

Christo Buizert; T. J. Fudge; William H.G. Roberts; Eric J. Steig; Sam Sherriff-Tadano; Catherine Ritz; Eric Lefebvre; Jon Edwards; Kenji Kawamura; Ikumi Oyabu; Hideaki Motoyama; Emma C. Kahle; Tyler R. Jones; Ayako Abe-Ouchi; Takashi Obase; Carlos Martin; Hugh Corr; Jeffrey P. Severinghaus; Ross Beaudette; Jenna A. Epifanio; Edward J. Brook; Kaden Martin; Jérôme Chappellaz; Shuji Aoki; Takakiyo Nakazawa; Todd A. Sowers; Richard B. Alley; Jinho Ahn; Michael Sigl; Mirko Severi; Nelia W. Dunbar; Anders Svensson; John M. Fegyveresi; Chengfei He; Zhengyu Liu; Jiang Zhu; Bette L. Otto-Bliesner; Vladimir Y. Lipenkov; Masa Kageyama; Jakob Schwander

doi:10.1126/science.abd2897

Antarctic surface temperature and elevation during the Last Glacial Maximum

Christo Buizert, T. J. Fudge, William H.G. Roberts, Eric J. Steig, Sam Sherriff-Tadano, Catherine Ritz, Eric Lefebvre, Jon Edwards, Kenji Kawamura, Ikumi Oyabu, Hideaki Motoyama, Emma C. Kahle, Tyler R. Jones, Ayako Abe-Ouchi, Takashi Obase, Carlos Martin, Hugh Corr, Jeffrey P. Severinghaus, Ross Beaudette, Jenna A. EpifanioEdward J. Brook, Kaden Martin, Jérôme Chappellaz, Shuji Aoki, Takakiyo Nakazawa, Todd A. Sowers, Richard B. Alley, Jinho Ahn, Michael Sigl, Mirko Severi, Nelia W. Dunbar, Anders Svensson, John M. Fegyveresi, Chengfei He, Zhengyu Liu, Jiang Zhu, Bette L. Otto-Bliesner, Vladimir Y. Lipenkov, Masa Kageyama, Jakob Schwander

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78 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	1097-1101
Number of pages	5
Journal	Science
Volume	372
Issue number	6546
DOIs	https://doi.org/10.1126/science.abd2897
State	Published - Jun 4 2021

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Buizert, C., Fudge, T. J., Roberts, W. H. G., Steig, E. J., Sherriff-Tadano, S., Ritz, C., Lefebvre, E., Edwards, J., Kawamura, K., Oyabu, I., Motoyama, H., Kahle, E. C., Jones, T. R., Abe-Ouchi, A., Obase, T., Martin, C., Corr, H., Severinghaus, J. P., Beaudette, R., ... Schwander, J. (2021). Antarctic surface temperature and elevation during the Last Glacial Maximum. Science, 372(6546), 1097-1101. https://doi.org/10.1126/science.abd2897

@article{1a86e0ed11d9400ca8d4bd00b5348bf8,

title = "Antarctic surface temperature and elevation during the Last Glacial Maximum",

abstract = "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.",

author = "Christo Buizert and Fudge, {T. J.} and Roberts, {William H.G.} and Steig, {Eric J.} and Sam Sherriff-Tadano and Catherine Ritz and Eric Lefebvre and Jon Edwards and Kenji Kawamura and Ikumi Oyabu and Hideaki Motoyama and Kahle, {Emma C.} and Jones, {Tyler R.} and Ayako Abe-Ouchi and Takashi Obase and Carlos Martin and Hugh Corr and Severinghaus, {Jeffrey P.} and Ross Beaudette and Epifanio, {Jenna A.} and Brook, {Edward J.} and Kaden Martin and J{\'e}r{\^o}me Chappellaz and Shuji Aoki and Takakiyo Nakazawa and Sowers, {Todd A.} and Alley, {Richard B.} and Jinho Ahn and Michael Sigl and Mirko Severi and Dunbar, {Nelia W.} and Anders Svensson and Fegyveresi, {John M.} and Chengfei He and Zhengyu Liu and Jiang Zhu and Otto-Bliesner, {Bette L.} and Lipenkov, {Vladimir Y.} and Masa Kageyama and Jakob Schwander",

year = "2021",

month = jun,

day = "4",

doi = "10.1126/science.abd2897",

language = "English (US)",

volume = "372",

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Buizert, C, Fudge, TJ, Roberts, WHG, Steig, EJ, Sherriff-Tadano, S, Ritz, C, Lefebvre, E, Edwards, J, Kawamura, K, Oyabu, I, Motoyama, H, Kahle, EC, Jones, TR, Abe-Ouchi, A, Obase, T, Martin, C, Corr, H, Severinghaus, JP, Beaudette, R, Epifanio, JA, Brook, EJ, Martin, K, Chappellaz, J, Aoki, S, Nakazawa, T, Sowers, TA, Alley, RB, Ahn, J, Sigl, M, Severi, M, Dunbar, NW, Svensson, A, Fegyveresi, JM, He, C, Liu, Z, Zhu, J, Otto-Bliesner, BL, Lipenkov, VY, Kageyama, M & Schwander, J 2021, 'Antarctic surface temperature and elevation during the Last Glacial Maximum', Science, vol. 372, no. 6546, pp. 1097-1101. https://doi.org/10.1126/science.abd2897

TY - JOUR

T1 - Antarctic surface temperature and elevation during the Last Glacial Maximum

AU - Buizert, Christo

AU - Fudge, T. J.

AU - Roberts, William H.G.

AU - Steig, Eric J.

AU - Sherriff-Tadano, Sam

AU - Ritz, Catherine

AU - Lefebvre, Eric

AU - Edwards, Jon

AU - Kawamura, Kenji

AU - Oyabu, Ikumi

AU - Motoyama, Hideaki

AU - Kahle, Emma C.

AU - Jones, Tyler R.

AU - Abe-Ouchi, Ayako

AU - Obase, Takashi

AU - Martin, Carlos

AU - Corr, Hugh

AU - Severinghaus, Jeffrey P.

AU - Beaudette, Ross

AU - Epifanio, Jenna A.

AU - Brook, Edward J.

AU - Martin, Kaden

AU - Chappellaz, Jérôme

AU - Aoki, Shuji

AU - Nakazawa, Takakiyo

AU - Sowers, Todd A.

AU - Alley, Richard B.

AU - Ahn, Jinho

AU - Sigl, Michael

AU - Severi, Mirko

AU - Dunbar, Nelia W.

AU - Svensson, Anders

AU - Fegyveresi, John M.

AU - He, Chengfei

AU - Liu, Zhengyu

AU - Zhu, Jiang

AU - Otto-Bliesner, Bette L.

AU - Lipenkov, Vladimir Y.

AU - Kageyama, Masa

AU - Schwander, Jakob

PY - 2021/6/4

Y1 - 2021/6/4

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85107584326&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85107584326&partnerID=8YFLogxK

U2 - 10.1126/science.abd2897

DO - 10.1126/science.abd2897

M3 - Article

C2 - 34083489

AN - SCOPUS:85107584326

SN - 0036-8075

VL - 372

SP - 1097

EP - 1101

JO - Science

JF - Science

IS - 6546

ER -

Antarctic surface temperature and elevation during the Last Glacial Maximum

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