and you've based your knowledge of temperatures on this!:
"To follow up on #7, it seems like there are a lot of different causes that could confound an attempt to extract temperature from tree rings. For example: how do you distinguish hot dry weather from cold dry weather, the tree isn't going to grow in either case? Suppose the weather is cool but wet, is that really different enough from warm and wet? Trees only grow in the daytime and during the spring and early summer. How do you get any kind of signal from the night and the other 9 months of the year? What if a tree has been shaded by others and they die off, it will look like a warming. Conversely if a trees neighbors slowly overshadow it, it will look like cooling. I'm sure that there a many more problems with extracting a temperature signal from trees before noise is a problem."
|
|