Wow! The Hockey Stick Admitted wrong by IPCC Co-Chair

We’ve known this for years. Now in a published discussion between Anthony Watts (whose open-sourced study of the world’s thermometers debunked the quality of their readings and led to detection of fraudulent data changes) and Steve McIntyre, founder and editor of the blog dedicated to analysis of climate data Climate Audit whose work showed Mann’s “hockey stick” was “is a result of a methodologically wrong statistical procedure, one that is guaranteed to produce a hockey stick even if you insert random-walk data as the input.”

In that audio discussion, they talk about how 2006, current IPCC co-chair Valerie Masson-Delmotte told McIntyre that she “agreed w. our criticism of Mann’s work” but asked that her name not be disclosed. She’s now granted that permission.  See

Also See Lubos Motl’s pithy comments:

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