For those of you who wonder about the discrepancies between global model estimates and measured global temperatures and are not afraid of the deep weeds of mathematics and statistics this post by Steve McIntyre is well worth reading. Ever since John Christy presented graphs like the one below his analyses have been under assault. McIntyre’s post comments on and responds to the latest counter analysis put forward by Gavin Schmidt. It seems that Mr. Schmidt has confused bias with uncertainty. The two are not the same.