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Science 12 May 2000:
Vol. 288. no. 5468, pp. 1039 - 1042
DOI: 10.1126/science.288.5468.1039
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Reports
El Niño-Like Climate Teleconnections in New England During the Late Pleistocene
Tammy M. Rittenour,
1*
Julie Brigham-Grette,
1
Michael E. Mann
2
A glacial varve chronology from New England spanning the 4000-year
period from 17,500 to 13,500 calendar years before the present was
analyzed for evidence of climate variability during the late
Pleistocene. The chronology shows a distinct interannual (3 to 5 years)
band of enhanced variability suggestive of El
Niño-Southern Oscillation (ENSO) teleconnections into
North America during the late Pleistocene, when the Laurentide ice
sheet was near its maximum extent and climatic boundary conditions were
different than those of today. This interannual variability largely
disappears by the young end of the 4000-year chronology, with only the
highest frequency components (roughly 3-year period) persisting. This
record provides evidence of ENSO-like climate variability during
near-peak glacial conditions.
1 Department of Geosciences, University of
Massachusetts, Amherst, MA 01003, USA.
2 Department of
Environmental Sciences, University of Virginia, Charlottesville, VA
22903, USA.
*
Present address: Department of Geosciences, University of
Nebraska, Lincoln, NE 68588, USA.
To whom correspondence should be addressed. E-mail:
tammyr{at}unlserve.unl.edu
Read the Full Text
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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- Eocene El Nino: Evidence for Robust Tropical Dynamics in the "Hothouse".
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- Variation in Holocene El Nino frequencies: Climate records and cultural consequences in ancient Peru.
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- A. W. Tudhope, C. P. Chilcott, M. T. McCulloch, E. R. Cook, J. Chappell, R. M. Ellam, D. W. Lea, J. M. Lough, and G. B. Shimmield (2001)
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