Tree ring dating and climate change
These findings are a warning of the global warming impact on forest ecosystems at subcontinent scale.
A multidisciplinary research team consisting of Russian and Spanish researchers, with the participation of a researcher from School of Forestry Engineering and Natural Resources at Universidad Politécnica de Madrid (UPM), has assessed the tree-ring width patterns of diverse conifer species in Spain and Siberia.
Trees can live for hundreds—and sometimes even thousands—of years.
The new chronology also shows that the GICC05 date of 1104 for a volcanic horizon attributed to the historical eruption of the Icelandic volcano Hekla is erroneous.
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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. The divergence problem is a physical phenomenon - tree growth has slowed or declined in the last few decades, mostly in high northern latitudes.