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Lake Toskaljavri, Northern Fenoscandia
Reference
Seppa, H. and Birks, H.J.B.  2002.  Holocene climate reconstructions from the Fennoscandian tree-line area based on pollen data from Toskaljavri.  Quaternary Research 57: 191-199.

Description
July mean temperatures were reconstructed from a pollen profile of the sediments of Toskaljavri (6912'N, 2128'E), a tree-line lake in the continental sector of northern Fenoscandia.  The Medieval Warm Period occurred between AD 600 and 1000 and was 0.8C warmer than the Current Warm Period.