CGRG Bibliography of Canadian Geomorphology
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Author : Gajewski, K.; and Viau, A.
Date : 2010.
Title : Quantifying Holocene climates of the Canadian Arctic.
Publication : CMOS-CGU Ottawa 2010. 44th Annual CMOS Congress, 36th Annual Scientific Meeting of CGU, 3rd Joint CMOS-CGU Congress. May 31-June 4, 2010. Ottawa, Ontario.
Issue :
Page(s) :
Abstract
Significant changes in high-latitude climates have been observed over the past 50 years mainly in response to human greenhouse gas forcing. However, the dynamics of past climate variability in these regions remain poorly resolved, making it difficult to assess the modern polar climate stability in relation to the current warming. Studies have shown that the early Holocene was warm across the Arctic, but existing information remains qualitative. Paleolimnological reconstructions have suggested that the past few centuries are “unprecedented”, but these records are poorly dated and there are questions about their interpretation. Attempts at quantitative terrestrial syntheses have been restricted to the past 2000 years. Recent pollen syntheses and paleolimnological reconstructions are presented that quantify the temperatures of the early Holocene warm period of the Canadian Arctic. The warming was widespread, and had large impacts on the ecosystems of the region. When compared to regional and sub-continental Holocene reconstructions from the Boreal and Beringian regions and more generally to the entire North American continent, we show that the dynamics of climate variability is more complex in response to natural forcings of the past.
Bibliography of Canadian Geomorphology