Monthly Archives: February 2006

Variance Stabilization in Esper Chronologies

Yesterday, Science sent me 13 Esper site chronologies, all standardized using RCS methods, one of which is the updated Polar Urals site. It’s hard to think of a better testing ground for Rob’s argument that the variance of the Polar Urals series disqualified it and mandated the substitution of the hugely hockey-stick shaped Yamal series. […]

An Open Letter to Science

An open letter has been sent to Science on archiving by Benny Peiser, Sir Colin Berry, Freeman Dyson, Chris de Freitas, Mick Fuller and Lord Taverne. Here it is: 22 February 2006 Science R. Brooks Hanson Managing Editor, Physical Sciences, Science American Association for the Advancement of Science Dear Dr Hanson In early March, the […]

Wilson on Yamal Substitution

Rob Wilson has written in sharply criticizing me (Yamal Substitution #3) for a lack of a balanced presentation on the Yamal substitution, and, in particular, for not acknowledging the "clear statistical reasons (related to variance changes through time)" that he had provided me offline for why D’Arrigo et al 2006 made the Yamal substitution. Also […]

Yamal Substitution #3

There’s some very important new information related to the “Yamal Substitution” – which sounds like a Ludlum novel title – in the Esper site chronologies which Science provided today. Also see here here here. Here’s a plot of a 40-year smooth of the Esper site chronology for Polar Urals and Briffa’s archived version of the […]

A Reply from Science

A couple of days ago, I posted up a copy of a letter that I sent to Science on archiving or non-archiving in connection with Osborn and Briffa 2006, Esper et al [2002] and Thompson et al 1989 (Dunde); 1997 (Guliya). I received a reply from Science today, which they stated was not for “public […]

More on the Yamal Substitution

I wrote recently about the Yamal substitution for the Polar Urals series in both Osborn and Briffa [2006] and D’Arrigo et al, 2006. This substitution is not incidental as the Yamal version had by far the strongest closing uptick in either data set, while the updated Polar Urals ring width series (1998 update) had elevated […]

A Briffa Collation

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 […]

Letter to Science re Osborn and Briffa Data

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 […]

Goodstein of Caltech on Misconduct

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. […]

Letter to NAS on Panel Composition and Balance

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 […]