Reconstructed changes in Arctic sea ice over the past 1,450 years

Christophe Kinnard (), Christian M. Zdanowicz, David A. Fisher, Elisabeth Isaksson, Anne de Vernal and Lonnie G. Thompson
Additional contact information
Christophe Kinnard: Centro de Estudios Avanzados en Zonas Áridas, Benavente 980, Casilla 554, La Serena, 1720170, Chile
Christian M. Zdanowicz: Geological Survey of Canada, NRCAN, Ottawa, Ontario, K1A 0E8, Canada
David A. Fisher: Geological Survey of Canada, NRCAN, Ottawa, Ontario, K1A 0E8, Canada
Elisabeth Isaksson: Norwegian Polar Institute, FRAM – High North Research Centre on Climate and the Environment, NO-9296 Tromsø, Norway
Anne de Vernal: GEOTOP, Université du Québec à Montréal, PO Box 8888, Montréal, Québec, H3C 3P8, Canada
Lonnie G. Thompson: Byrd Polar Research Center

Nature, 2011, vol. 479, issue 7374, 509-512

Abstract: Arctic ice loss linked to human actions Recent reductions in the extent of Arctic summer sea ice are well documented, but how they relate to long-term natural variability has remained unclear. Kinnard et al. present a high-resolution reconstruction of past sea-ice cover changes in the Arctic and show that the recent sea-ice loss is unprecedented in the context of the past 1,450 years. This finding supports the suggestion that the recent decrease in summer Arctic sea ice is consistent with forcings from anthropogenic warming.

Date: 2011
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DOI: 10.1038/nature10581

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