Cooling of Northwest Atlantic slope waters during the Holocene

Details Cooling of Northwest Atlantic slope waters during the Holocene Cooling of Northwest Atlantic slope waters during the Holocene

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3403609s&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 3, CiteID L03609

Physics

7

Biogeosciences: Paleoclimatology And Paleoceanography (3344, 4900), Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513), Paleoceanography: Sea Surface Temperature, Oceanography: Physical: Western Boundary Currents

Scientific paper

Climate of the last 11,000 years, the Holocene, is usually described as warm and stable. Benchmark temperature records from central Greenland ice cores show none of the large, abrupt variations that characterized the prior 100,000 years of glacial climate. Nor do they show any substantial trend, indicating at most 1°-3°C of cooling. Here we show that the slope waters east of the United States and Canada cooled 4°-10°C during the Holocene. Declining insolation, increasing convection in the Labrador Sea, and equatorward shifting of the Gulf Stream path may have caused the cooling.

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