The scientists use specialist drills to extract wood samples from historic buildings in Lötschental, Switzerland. These data help in the reconstruction of our climate of the last 2,500 years. (Credit: Jan Esper)
It would seem that there are striking chronological parallels between significant variations of climate and major historical epochs, such as the Migration Period and the heyday of the Middle Ages. This is the conclusion reached following a study undertaken by researchers from Switzerland, Germany, Austria, and the USA, in which they were able to reconstruct the summer climate in Europe over the last 2,500 years from the information provided by annual tree rings.
More in ScienceDaily (Jan. 27, 2011)