CGRG Bibliography of Canadian Geomorphology
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Author : Bunbury, J.; Viau, A.; Gajewski, K.; and Sawada, M.C.
Date : 2005.
Title : Holocene climate change in northern Canada and Alaska.
Publication : Rapid Landscape Change and Human Response in the Arctic and Sub-Arctic. ICSU Dark Nature project - C-CIARN - IUGS Geoindicators Initiative. Whitehorse, Yukon, Canada. June 15-18, 2005.
Issue :
Page(s) :
Abstract
We present a synthesis of abrupt climate changes at various scales in northern North America. Regional time series of July temperature for four regions (Quebec-Labrador and Baffin Island; Keewatin and the central Arctic Archipelago; Yukon Territory and Mackenzie Delta; Alaska) were estimated from pollen records. The July temperature series were derived using the modern analogue method and many pollen diagrams averaged in each region. These series show that millennial-scale climate transitions occur at the same time in all four regions and the overall trends are coherent across northern Canada. Millennial-scale climate variability from pollen records is comparable in frequency and structure with changes in ice cores and marine records. The magnitude of millennial-scale climate variability is on the order of ~0.2 °C. Century-scale climatic changes, such as the Little Ice Age and the Medieval Warm Period will be compared between these four regions across the north. These are derived from various proxy-climate records including ice cores, tree-rings, boreholes and pollen diagrams.
Bibliography of Canadian Geomorphology