Bohemond
2009-12-01 09:51:39

“Trees grow in western Ireland, of course, and each year those trees grow a ring. Thick rings indicate climate conditions that were good for the trees; thin rings indicate the opposite. If many trees in western Ireland had thick rings in some particular years, then climatic conditions in those years were presumably good. Tree rings have been used in this way to learn about the climate centuries ago.”

…by the warmmongers, and invalidly. “Dendroclimatology,” I’m afraid, is about as useful as measuring cranial dimensions to divine personality. There is simply no way, at least at present, to tease out meaningful temperature effects on tree growth from the background noise of local rainfall, winds, soil nutrients, direct CO2 ‘fertilization’, competing vegetation etc etc etc.

I actually have followed the very useful field of dendrochronology, since my grandfather was one of A. E. Douglass’ assistants in the 1920s. But d-chron simply matches patterns, it doesn’t attempt to ‘read’ the patterns as if they were woody tea leaves