Comment Re:Calling Pons and Fleischmann... (Score 2, Informative) 1747
It's only Briffa's tree-ring data that doesn't match other tree series and proxies from 1960 onwards. It's a set of 10 or so trees (might be less) that agreed with 100's of trees from Europe and Asia till 1960, but then something happened. That is the "decline" or the "divergence problem". It has never been a secret and it sure as hell doesn't invalidate tree-rings as a good proxy for direct temperature readings. It would however be interesting to find out what happened in Alaska..