A reconstruction of mid-summer temperatures from ring-widths of Scots pinesince AD 50 in northern Fennoscandia

We have reconstructed mid-summer (July) temperatures using a master ring-wi dth chronology of Scots pine (Pinus sylvestris L.) for northern Fennoscandi a covering nearly the last two millennia. The chronology is constructed fro m 93 living trees and 275 dead trees collected between 68 degrees and 70 de greesN, 20 degrees and 30 degreesE. In standardization negative exponential functions and, alternatively, regression lines were applied. Because of a strong autocorrelation in the data, we used a model structure including 2-y ear lagging and a 3 year leading predicter along with the master chronology in the transfer function. Over one-half of the dependent climate variance was retrieved in our final reconstruction model. We indicate the largest te mperature anomalies of individual summers as well as longer-term temperatur e variability starting from AD 50.