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Nature 430, 842-843 (19 August 2004) | doi:10.1038/430842a; Published online 18 August 2004

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Palaeoclimatology:  Fresh angle on the polar seesaw

Trond M. Dokken1 & Kerim H. Nisancioglu1

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During the last glacial period, climatic variation in the Northern and Southern Hemispheres was evidently linked. Modelling work points to freshwater discharge into the North Atlantic as a driving factor.

Climate during the period from 60,000 to 25,000 years ago, referred to as Marine Isotope Stage 3, was exceptionally variable. Ice-core records from Greenland suggest that the Northern Hemisphere underwent a series of rapid warming episodes, each followed by gradual cooling.

  1. Trond M. Dokken and Kerim H. Nisancioglu are at the Bjerknes Centre for Climate Research, University of Bergen, Allégaten 55, Bergen 5007, Norway.
    Email: trond.dokken@bjerknes.uib.no

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