The NAS Panel showed the following spaghetti diagram. From NAS Panel. The Esper et al 2002 reconstruction shown here is not actually in Esper et al 2002 in this form, but attributed to Cook et al 2004. I wonder where they got the digital version, as I’ve been unable to locate this version, although it […]
Here with accompanying editorial by Terence Corcoran here.
One of the examples of spurious regression mentioned in Phillips 1998, quoted by Eduardo Zorita at CPD and previously here by me, was taken from Hendry 1980, from an article entitled “Econometrics – Alchemy or Science?”. Hendry is a very eminent professor of economics and the article proved to be as interesting as its title. […]
Mann, Wahl, Ammann, Ritson, Ramsdorff are all dining out on the fact that von Storch et al 2004 did not implement a detrending step in their implementation of MBH98. (Although given that Mann would not be "intimidated" into releasing his algorithm and cited Zorita et al 2003 to us as evidence that people could implement […]
I hope that you are following the lively discussion about Burger and Cubasch at Climates of the Past here , where Mann aka Anonymous Referee #2 is carrying on in a quite extraodinary way. I’ll probably try to weigh in over there at some point. The dialogue has exploded fairly quickly and I’ve collated some […]
RegEM has reared its ugly head again in Mann’s review of Burger and Cubasch.
Thompson et al said that "their [Thompson’s four Tibetan ice core] dO18 histories or proxy temperature records, are remarkably similar at lower frequencies". They are not just similar – they are "remarkably similar" with correlations as high as one milllll-ion.
There’s a short article “Model verification and documentaiton are needed” in Eos, June 20, 2006, by a geologist, I. Sasowsky, :calling for reviewers to ensure that computer methods are properly documented and archived as part of the review process. Sasowsky notes that prior studies have documented frequent “surprises” and “fundemental errors” in numerical modeling studies, […]
There’s a new Lonnie Thompson article online at PNAS (thanks to Steve Bloom for reference). It has some "supporting data" – "supporting data to Thompson means only digital versions of the graphics, rather than detailed archives such as Majewski provided for the Everest ice core. Just to annoy anyone who was actually interested in the […]
Everybody seems to be so full of advice on how I should do things. OK, I have a question. Ross and I are writing an op ed about the NAS Panel. It’s hard to convey to a lay audience what a comedown it is for the NAS Panel to say that it is merely the […]
Climate Audit 
National Post Op Ed
Here with accompanying editorial by Terence Corcoran here.