[An Excerpt of an email from Richard Muller in response against Douglas Keenan’s refutation of the whole of climate science.]
Keenan’s conclusion is that there has been virtually no valid work in the climate field, that what is needed is a better model, and he does not know what that model should be. He says, “To summarize, most research on global warming relies on a statistical model that should not be used. This invalidates much of the analysis done on global warming. I published an op-ed piece in the Wall Street Journal to explain these issues, in plain English, this year.”
Here is his quote basically concluding that no analysis of global warming is valid under his statistical standards: “Although the AR(1)-based model is known to be inadequate, no one knows what statistical model should be used. There have been various papers in the peer-reviewed literature that suggest possible resolutions, but so far no alternative model has found much acceptance.”
What he is saying is that statistical methods are unable to be used to show that there is global warming or cooling or anything else. That is a very strong conclusion, and it reflects, in my mind, his exaggerated pedantry for statistical methods. He can and will criticize every paper published in the past and the future on the same grounds. We might as well give up in our attempts to evaluate global warming until we find a “model” that Keenan will approve — but he offers no help in doing that.
In fact, a quick survey of his website shows that his list of publications consists almost exclusively of analysis that shows other papers are wrong. I strongly suspect that Keenan would have rejected any model we had used.