As I’ve mentioned before, you have to really watch the pea under the thimble whenever Briffa is presenting a series. I showed before how the post-1960 decline in MXD reconstructions was simply excised from the record and carried forward into the IPCC spaghetti graph where the overlay of colors made the detection virtually impossible to […]
The continued negligence of the major journals in ensuring that paleoclimate authors archive data in accordance with journal policies is very frustrating and, as previously noted, has reared its ugly head once again with Osborn and Briffa. I have had little luck in the past with Science (except for the Kilimanjaro sample dO18 data) but […]
There’s an interesting article online here by David Goodstein of Caltech, in which he notices that misconduct problems seem rife in biological sciences administered by NIH and very infrequent in sciences administered by NSF. He identifies three factors as common in problems, noting that exact reproducibility in physical sciences is a major deterrent to fraud. […]
The National Academy of Sciences (NAS) has presumably been criticized in the past for the composition of panels (from the evidence of the mere existence of the 1997 law on committee balance and composition). This law and resulting policies provide for a comment period on proposed committees. Ross and I have exercised our rights under […]
It is reported here that the University of Pittsburgh Research Integrity Panel concluded that Dr. Gerald Schatten didn’t intentionally fabricate data, but he committed “research misbehavior” in signing his name to Dr. Hwang Woo-suk’s work in South Korea. The panel found Schatten, as co-author with Hwang on a 2005 article in the journal Science, “did […]
We have a number of readers who are highly qualified econometricians. I think that initially they find it hard to believe the description of Hockey Team statistical practices. Martin Ringo is one such reader, who has a doctorate in "finite sample properties of a variety of feasible, generalized least squares estimators". He’s sent in the […]
Readers of this site are familiar with various efforts by UCAR and UCAR personnel to discredit us, ranging from the April 6, 2005 presentation in Washington by Ammann, Bradley and Crowley discussed here , the long-standing effort by Ammann and Wahl to discredit us leading to the UCAR press release of May 11, 2005, announcing […]
I’m not sure that there’s a huge demand for more linear algebra on MBH98, but here’s the rest of the proof that the NH temperature index in an MBH98-type calculation is simply a linear combination of proxies and, when only one temperature PC is reconstructed, the weights are proportional to the correlation between each proxy […]
I’ve talked recently about the phenomenon of cherry picking tree ring chronologies with upticks in the small-subset (10-20) compilations used in typical Hockey Team multiproxy studies (e.g. Jones et al 1998; Crowley and Lowery 2000, etc., most recently Osborn and Briffa, 2006; and to a slight lesser extent D’Arrigo et al, 2006 (where there was […]
The Polar Urals temperature reconstruction (Briffa et al, 1995) has been a mainstay of multiproxy studies. More data was collected at this site in 1998 (russ176), but in the two new studies (Osborn and Briffa, 2006; D’Arrigo et al., 2006), they relate their site selection to the Polar Urals, but substitute the Yamal RCS series […]
Climate Audit 