Although it’s not yet updated to the new IPPC report (which hasn’t actually come out yet), Doug Hoyt has developed a scorecard to compare the major predictions of global warming models with actual observations. He gives each prediction a “yes-no-undetermined score.” So if the major models’ prediction is confirmed, the score at the beginning would be 1-0-0. So how do the models score when compared with the evidence? The final score is 1-27-4. That’s one confirmed prediction, 27 disconfirmed, and 4 undetermined.
Hoyt isn’t a newcomer to the debate. He’s published important work on sunspot observations over the past 4 centuries. He also coauthored a book called The Role of the Sun in Climate Change , published by some fringe outfit called “Oxford University Press.”