Global warming?

[SamIam]

Originally Posted by classicman

I'm not sure that tree rings are going to be as accurate as we may need. When I think about the mechanical instruments we were using just 40 or 50 years ago, I start to scratch my head about the fractions of a degree raise. Just sayin'

You would be amazed. I took a graduate course in forest ecology once and the professor used us students as unpaid labor looking at tree rings in 100's of cores that we went out and collected. You could tell from the width of the ring if it had been a dry or wet year, if a forest fire had gone through at some point, if a nearby tree had been cut down or fallen. It was very fascinating, although I got a couple of headaches counting all those rings under the scope.