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Widespread evidence of 1500 yr climate variability in North America during the past 14 000 yr

Andre E. Viau, Konrad Gajewski, Philippe Fines, David E. Atkinson and Michael C. Sawada
Widespread evidence of 1500 yr climate variability in North America during the past 14 000 yr
Geology (Boulder) (May 2002) 30 (5): 455-458

Abstract

There is debate concerning the spatial extent and magnitude of the recently identified 1500 yr climate oscillation. Existing evidence is largely restricted to the North Atlantic and adjacent landmasses. The spatial extent, magnitude, and effects of these climate variations within the terrestrial environment during the Holocene have not been established. We show that millennial-scale climate variability caused changes in vegetation communities across all of North America with a periodicity of 1650+ or -500 yr during the past 14 000 calendar years (cal yr). Times of major transitions identified in pollen records occurred at 600, 1650, 2850, 4030, 6700, 8100, 10 190, 12 900, and 13 800 cal yr B.P., consistent with ice and marine records. We suggest that North Atlantic millennial-scale climate variability is associated with rearrangements of the atmospheric circulation with far-reaching influences on the climate.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 30
Serial Issue: 5
Title: Widespread evidence of 1500 yr climate variability in North America during the past 14 000 yr
Affiliation: University of Ottawa, Department of Geography, Ottawa, ON, Canada
Pages: 455-458
Published: 200205
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 37
Accession Number: 2002-035468
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, sketch map
N42°00'00" - N84°00'00", W141°00'00" - W52°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200212
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