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Science 29 November 1996:
Vol. 274. no. 5292, pp. 1503 - 1508
DOI: 10.1126/science.274.5292.1503
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Reports

The Little Ice Age and Medieval Warm Period in the Sargasso Sea

Lloyd D. Keigwin

Sea surface temperature (SST), salinity, and flux of terrigenous material oscillated on millennial time scales in the Pleistocene North Atlantic, but there are few records of Holocene variability. Because of high rates of sediment accumulation, Holocene oscillations are well documented in the northern Sargasso Sea. Results from a radiocarbon-dated box core show that SST was sim 1°C cooler than today sim 400 years ago (the Little Ice Age) and 1700 years ago, and sim 1°C warmer than today 1000 years ago (the Medieval Warm Period). Thus, at least some of the warming since the Little Ice Age appears to be part of a natural oscillation.

Woods Hole Oceanographic Institution, Woods Hole, MA 02543 USA.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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P. Diz, G. Frances, C. Pelejero, J. O. Grimalt, and F. Vilas (2002)
The Holocene 12, 459-468
   Abstract »    PDF »
Cultural Responses to Climate Change During the Late Holocene.
P. B. deMenocal (2001)
Science 292, 667-673
   Abstract »    Full Text »


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