Greenland temperature response to climate forcing during the last deglaciation

Author:

Buizert Christo1,Gkinis Vasileios23,Severinghaus Jeffrey P.4,He Feng5,Lecavalier Benoit S.6,Kindler Philippe7,Leuenberger Markus7,Carlson Anders E.1,Vinther Bo2,Masson-Delmotte Valérie8,White James W. C.3,Liu Zhengyu59,Otto-Bliesner Bette10,Brook Edward J.1

Affiliation:

1. College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA.

2. Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Denmark.

3. Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309, USA.

4. Scripps Institution of Oceanography, University of California–San Diego, La Jolla, CA 92093, USA.

5. Center for Climatic Research, Nelson Institute for Environmental Studies, University of Wisconsin, Madison, WI 53706, USA.

6. Department of Physics and Physical Oceanography, Memorial University, St. John’s, Canada.

7. Division of Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland.

8. Laboratoire des Sciences du Climat et de l’Environnement, Institut Pierre Simon Laplace (UMR CEA-CNRS-UVSQ 8212), Gif-sur-Yvette, France.

9. Laboratory for Climate and Ocean-Atmosphere Studies, Peking University, Beijing 100871, China.

10. Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO 80307, USA.

Abstract

Old and older, cold and colder Greenland surface air temperatures changed dramatically during the last deglaciation. The exact amount is unknown, which makes it difficult to understand what caused those changes. Buizert et al. report temperature reconstructions for the period from 19,000 to 10,000 years before the present from three different locations in Greenland and interpret them with a climate model (see the Perspective by Sime). They provide the broad geographic pattern of temperature variability and infer the mechanisms of the changes and their seasonality, which differ in important ways from the traditional view. Science, this issue p. 1177 ; see also p. 1116

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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