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Detailed Reference Information
Hu et al. 2006
Hu, F.S., Nelson, D.M., Clarke, G.H., Rühland, K.M., Huang, Y., Kaufman, D.S. and Smol, J.P. (2006). Abrupt climatic events during the last glacial-interglacial transition in Alaska. Geophysical Research Letters 33: doi: 10.1029/2006GL027261. issn: 0094-8276.

Evidence is mounting that abrupt climatic shifts occurred during the last glacial-interglacial transition (LGIT) in the North Atlantic and other regions. However, few high-resolution climatic records of the LGIT exist from the high latitudes of the North Pacific rim. We analyzed lake sediments from southwestern Alaska for biogenic silica, organic carbon, organic nitrogen, diatom assemblages, and compound-specific hydrogen isotopes. Results reveal climatic changes coincident with the Younger Dryas, Intra-Aller¿d Cold Period, and Pre-Boreal Oscillation. However, major discrepancies exist in the paleoclimate patterns of the B¿lling-Aller¿d interstadial between our data and the GISP2 δ18O record from Greenland, and causes are uncertain. These data suggest that the North Pacific and North Atlantic experienced similar reversals during climatic warming of the LGIT but that the B¿lling-Aller¿d cooling trend in the GISP2 δ18O record is probably not a hemispheric or global pattern.

BACKGROUND DATA FILES

Abstract

Keywords
Biogeosciences, Paleoclimatology and paleoceanography (3344, 4900), Cryosphere, Lakes, Global Change, Abrupt/rapid climate change (4901, 8408), Global Change, Climate variability (1635, 3305, 3309, 4215, 4513)
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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