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A Technical Perspective in Modern Tree-ring Research - How to Overcome Dendroecological and Wood Anatomical Challenges

Dendroecological research uses information stored in tree rings to understand how single trees and even entire forest ecosystems responded to ...

Swiss Federal Research Institute WSL

Preserving multicentennial climate variability in long tree-ring records is critically important for reconstructing the full range of temperature variability over the past 1000 years. This allows the putative "Medieval Warm Period" (MWP) to be described and to be compared with 20th-century warming in modeling and attribution studies. We demonstrate that carefully selected tree-ring chronologies from 14 sites in the Northern Hemisphere (NH) extratropics can preserve such coherent large-scale, multicentennial temperature trends if proper methods of analysis are used. In addition, we show that the average of these chronologies supports the large-scale occurrence of the MWP over the NH extratropics.

Article	Year
Low-frequency signals in long tree-ring chronologies for reconstructing past temperature variability. Science (New York, N.Y.)\| PubMed ID: 11910106	2002
Environmental change without climate change? The New phytologist\| PubMed ID: 20673285	2010

Fritz H. Schweingruber

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