Pliocene Warmth, Polar Amplification, and Stepped Pleistocene Cooling Recorded in NE Arctic Russia

Author:

Brigham-Grette Julie1,Melles Martin2,Minyuk Pavel3,Andreev Andrei2,Tarasov Pavel4,DeConto Robert1,Koenig Sebastian1,Nowaczyk Norbert5,Wennrich Volker2,Rosén Peter6,Haltia Eeva5,Cook Tim7,Gebhardt Catalina8,Meyer-Jacob Carsten6,Snyder Jeff9,Herzschuh Ulrike10

Affiliation:

1. Department of Geosciences, University of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003, USA.

2. Institute of Geology and Mineralogy, University of Cologne, Zuelpicher Strasse 49a, D-50674 Cologne, Germany.

3. North-East Interdisciplinary Scientific Research Institute, Far East Branch of the Russian Academy of Sciences, Portovaya Street 16, 685000 Magadan, Russia.

4. Free University Berlin, Institute of Geological Sciences, Malteser Strasse 74-100, Haus D, D-12249 Berlin, Germany.

5. Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, D-14473 Potsdam, Germany.

6. Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.

7. Department of Physical and Earth Sciences, Worcester State University, Worcester, MA 01602, USA.

8. Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, Germany.

9. Department of Geology, Bowling Green State University, OH 43403, USA.

10. Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Telegrafenberg A43, D-14473 Potsdam, Germany.

Abstract

From Russia with Lovely Data Climate and the atmospheric concentration of CO 2 are closely linked. Brigham-Grette et al. (p. 1421 , published online 9 May) present data from Lake El'gygytgyn, in northeast Arctic Russia, that shows how climate varied between 3.6 and 2.2 million years ago, an important interval in the global cooling trend that accelerated rapidly at the end of the Miocene. Summer temperatures were about 10°C warmer than today, even though the concentration of atmospheric CO 2 was similar.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference105 articles.

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