Furthermore, the authors find a natural 70-80 year oscillation of temperatures, similar to the 60-70 year oscillation of the natural Pacific Decadal Oscillation [PDO].
So much for "Arctic amplification."
All four of these temperature reconstructions show the Medieval Warm Period ~1000 years ago was warmer than the present [year 2000].
|Fig. 3. August SST [sea surface temperature] reconstructions from the south of Iceland (above, blue) and the Norwegian Sea (below, blue) (modified from ). Red solid lines show smoothed values.|