Posted by: Grant | November 21, 2010

Prof Singer On The Hockey Stick Issue

” …Tellingly, Canadian Prof. Steven McIntyre and Ross McKitrick (M&M) showed that even random data fed into the Mann algorithm would always yield a warmest 20th century.

Some final thoughts: Being charitable, I will assume that Mann made honest statistical and other errors in his 1998 and 1999 papers. But after these errors were published widely by M&M, Mann’s behavior has been unethical to say the least. He has not replied to the critiques, nor even referenced them. He has just ignored them and tried to muddle the situation. (The National Academy report did the same.) 

Is Mann guilty of fraud? I don’t know; much depends on what Cuccinelli uncovers. But I am of the opinion that Mann should formally withdraw his flawed papers and no longer refer to them in his bibliography or in grant applications without at least a footnote. Formal withdrawal could create a storm, however, since the 2001 IPCC report built its case for man-made global warming on the validity of the hockey stick. There may be interesting times ahead.”

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