| PALEOLIMNOLOGY |
Centennial-scale compound-specific hydrogen isotope record of Pleistocene¿Holocene climate transition from southern New England.
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Hou, J.,Huang, Y.,Oswald, W.,Foster, D.R.,Shuman, B. 2007 Centennial-scale compound-specific hydrogen isotope record of Pleistocene¿Holocene
climate transition from southern New England. Geophysical Research Letters Vol. 34, L19706
| Data Coverage |
North: 42.083 * South: 42.083 |
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West: -71.916 * East: -71.916 |
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Altitude: 212 m |
Start Year: -14502 cal yr BP * End Year: -6080 cal yr BP
Data: Please Cite Data Contributors!
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Summary: Northeastern North America experienced major climate shifts during
the Pleistocene-Holocene transition. However, there have been no
high-resolution isotopic records of climate change from this region.
Here, we present a centennial-scale record of climate change during
the transition based on D/H ratios of behenic acid (C22 nacid) or
dDBA from a sediment core in Blood Pond, Massachusetts. Surface
calibrations from a transect of 19 lakes in eastern North America
show that dDBA values track mean annual atmospheric temperature
variations. The abrupt climate events observed in Blood Pond records
show remarkable similarity with Greenland ice core d18O records
during the Pleistocene. During the early Holocene, the northeastern
North America dDBA record was more variable than Greenland, possibly
due to the close proximity of the Laurentide ice sheet, and impact
of freshwater outbursts as the ice sheet rapidly retreated.
More Info on Paleolimnology |
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Complete XML Record: noaa-lake-6207
(Last Revised: 2009-02-11 )
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DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce )
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| http://www.ncdc.noaa.gov/paleo/ |
| E-mail: bruce.a.bauer@noaa.gov |
| E-mail: paleo@noaa.gov |
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