Enhanced modern heat transfer to the Arctic by warm Atlantic water.

Spielhagen, Robert F., Werner, Kirstin, AAgaard Sørensen, Steffen, Zamelczyk, Katarzyna, Kandiano, Evgeniya, Budeus, Gereon, Husum, Katrine, Marchitto, Thomas M. and Hald, Morten (2011) Enhanced modern heat transfer to the Arctic by warm Atlantic water. Science, 331 (6016). pp. 450-453. DOI 10.1126/science.1197397.

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The Arctic is responding more rapidly to global warming than most other areas on our planet. Northward-flowing Atlantic Water is the major means of heat advection toward the Arctic and strongly affects the sea ice distribution. Records of its natural variability are critical for the understanding of feedback mechanisms and the future of the Arctic climate system, but continuous historical records reach back only ~150 years. Here, we present a multidecadal-scale record of ocean temperature variations during the past 2000 years, derived from marine sediments off Western Svalbard (79°N). We find that early–21st-century temperatures of Atlantic Water entering the Arctic Ocean are unprecedented over the past 2000 years and are presumably linked to the Arctic amplification of global warming.

Document Type: Article
Keywords: Paleoceanography; Climatology; Arctic climate variability, sea ice
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: Yes
Open Access Journal?: No
Publisher: American Association for the Advancement of Science (AAAS)
Projects: Polynya, Laptev Sea System, Future Ocean
Date Deposited: 23 Mar 2011 14:00
Last Modified: 23 Sep 2019 18:48
URI: https://oceanrep.geomar.de/id/eprint/11616

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