The Blackboard

Some of you may rush to your computer this morning and noticed that Gavin posted to let us know he found a “neat” way to ENSO correct data. Amazingly to any American, he did this at 7 pm, July 4th. If you are an avid reader of “The Blackboard”, [...]

Roger Pielke Jr. and John Tierney have recently been comparing published predictions of AGW to empirical data. In response, Gavin Schmidt suggested that comparisons should include more than 8 years, and pointed out that computations for Hansen et al. 1988 scenarios A, B, C began in 1983, as Gavin said last May, “giving [...]

Recently, I posted a baseline analysis to illustrate the baseline problem that defines 33C as the greenhouse temperature increment; that analysis included a number of assumptions. Today, I’ll address a specific question that periodically appear at climate blogs. This question is:
Q: The simple based model assumes the earth is isothermal– that is everything has the [...]