Climatic bisection of the last interglacial warm period in the Polar North Atlantic
Bauch, Henning A., Kandiano, Evguenia, Helmke, Jan, Andersen, Nils, Rosell-Mele, Antoni and Erlenkeuser, Helmut (2011) Climatic bisection of the last interglacial warm period in the Polar North Atlantic Quaternary Science Reviews, 30 (15-16). pp. 1813-1818. DOI 10.1016/j.quascirev.2011.05.012.
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New multiproxy marine data of the Eemian interglacial (MIS5e) from the Norwegian Sea manifest a cold event with near-glacial surface ocean summer temperatures (3–4 °C). This mid-Eemian cooling divided the otherwise relatively warm interglacial climate and was associated with widespread expansions of winter sea-ice and polar water masses due to changes in atmospheric circulation and ocean stability. While the data also verify a late rather than early last interglacial warm peak, which is in general disharmony with northern hemisphere insolation maximum and the regional climatic progression of the early Holocene, the cold event itself was likely instrumental for delaying the last interglacial climate development in the Polar North when compared with regions farther south. Such a ‘climatic decoupling’ of the Polar region may bear profound implications for the employment of Eemian conditions to help evaluate the present and future state of the Arctic cryosphere during a warming interglacial.
|Keywords:||Paleoceanography; Climatology; Last interglacial; Paleoclimate analog|
|Research affiliation:||OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Kiel University > Other > Leibniz-Laboratory for Radiometric Dating and Isotope Research
|Date Deposited:||31 Oct 2011 13:57|
|Last Modified:||23 Jan 2013 10:01|
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