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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.
Afiliación
  • Buizert C; College of Earth Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA. christo.buizert@oregonstate.edu.
  • Fudge TJ; Department of Earth and Space Science, University of Washington, Seattle, WA 98195, USA.
  • Roberts WHG; Geographical and Environmental Sciences, Northumbria University, Newcastle, UK.
  • Steig EJ; Department of Earth and Space Science, University of Washington, Seattle, WA 98195, USA.
  • Sherriff-Tadano S; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa 277-8568, Japan.
  • Ritz C; Université Grenoble Alpes, CNRS, IRD, IGE, Grenoble, France.
  • Lefebvre E; Université Grenoble Alpes, CNRS, IRD, IGE, Grenoble, France.
  • Edwards J; College of Earth Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA.
  • Kawamura K; National Institute of Polar Research, Tachikawa, Tokyo, Japan.
  • Oyabu I; Department of Polar Science, The Graduate University of Advanced Studies (SOKENDAI), Tokyo, Japan.
  • Motoyama H; Japan Agency for Marine Science and Technology (JAMSTEC), Yokosuka, Japan.
  • Kahle EC; National Institute of Polar Research, Tachikawa, Tokyo, Japan.
  • Jones TR; National Institute of Polar Research, Tachikawa, Tokyo, Japan.
  • Abe-Ouchi A; Department of Earth and Space Science, University of Washington, Seattle, WA 98195, USA.
  • Obase T; Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309, USA.
  • Martin C; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa 277-8568, Japan.
  • Corr H; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa 277-8568, Japan.
  • Severinghaus JP; British Antarctic Survey, Cambridge, UK.
  • Beaudette R; British Antarctic Survey, Cambridge, UK.
  • Epifanio JA; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA.
  • Brook EJ; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA.
  • Martin K; College of Earth Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA.
  • Chappellaz J; College of Earth Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA.
  • Aoki S; College of Earth Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA.
  • Nakazawa T; Université Grenoble Alpes, CNRS, IRD, IGE, Grenoble, France.
  • Sowers TA; Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
  • Alley RB; Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
  • Ahn J; School of Earth and Environmental Sciences, Seoul National University, Seoul 08826, South Korea.
  • Sigl M; The Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA 16802, USA.
  • Severi M; School of Earth and Environmental Sciences, Seoul National University, Seoul 08826, South Korea.
  • Dunbar NW; Climate and Environmental Physics, Physics Institute & Oeschger Center for Climate Change Research, University of Bern, 3012 Bern, Switzerland.
  • Svensson A; Department of Chemistry "Ugo Schiff," University of Florence, Florence, Italy.
  • Fegyveresi JM; Institute of Polar Sciences, ISP-CNR, Venice-Mestre, Italy.
  • He C; New Mexico Bureau of Geology & Mineral Resources, Earth and Environmental Science Department, New Mexico Tech, Socorro, NM 87801, USA.
  • Liu Z; Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
  • Zhu J; School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ 86011, USA.
  • Otto-Bliesner BL; Department of Geography, Ohio State University, Columbus, OH 43210, USA.
  • Lipenkov VY; Department of Geography, Ohio State University, Columbus, OH 43210, USA.
  • Kageyama M; National Center for Atmospheric Research, Boulder, CO 80307, USA.
  • Schwander J; National Center for Atmospheric Research, Boulder, CO 80307, USA.
Science ; 372(6546): 1097-1101, 2021 06 04.
Article en En | MEDLINE | ID: mdl-34083489
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.
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Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Science Año: 2021 Tipo del documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Science Año: 2021 Tipo del documento: Article