The WSJ editorial page – a very suspect source – opines on a new statistical study which seems to cast doubt on the hockey stick model of global warming. This model began with Michael Mann’s 1999 paper, and is the star of Gore’s An Inconvenient Truth.
The three researchers — Edward J. Wegman of George Mason University, David W. Scott of Rice University and Yasmin H. Said of Johns Hopkins University — are not climatologists; they’re statisticians. Their task was to look at Mr. Mann’s methods from a statistical perspective and assess their validity. Their conclusion is that Mr. Mann’s papers are plagued by basic statistical errors that call his conclusions into doubt. Further, Professor Wegman’s report upholds the finding of Messrs. McIntyre and McKitrick that Mr. Mann’s methodology is biased toward producing “hockey stick” shaped graphs.
I don’t know enough to have an opinion on this study – although I have a natural bias towards disagreeing with the WSJ editorial page – but I’m curious if anyone else can comment.