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Piermont Marsh, New York, USA
Reference
Pederson, D.C., Peteet, D.M., Kurdyla, D., Guilderson, T. 2005. Medieval Warming, Little Ice Age, and European impact on the environment during the last millennium in the lower Hudson Valley, New York, USA. Quaternary Research 63: 238-249.

Description
A warmer and drier interval identified from the type and amount of pollen found in a sediment core with bi-decadal resolution retrieved from Piermont Marsh (4100'N, 7355'W) on the western shore of the Hudson River, New York, USA, revealed the MWP to have held sway in that area from AD 795 to 1290.