Taimyr is one of the sites in Esper et al [2002]. It does not make a material contribution to any hockey stick-ness in Esper. The authors have some very interesting things to say about AGW which I’ll post up in a day or two. For now, I want to post up the following graph, which […]
I more or less jumped into the middle of some technical issues pertaining to Esper et al [2002], without properly describing the study. Esper et al. [2002] is one of the multiproxy studies that is included in all the spaghetti diagrams. It supposedly shows more "variability" than Mann, which is the issue that the Hockey […]
You’ve all seen my frustration with Jacoby and his doctrine of a "few good men". I haven’t posted on this, but, one thing that puzzled me was some missing inventory numbers at Polar Urals, just before the critical trees 45, 46 and 47 (upon which the "coldest year of the millennium" depends. Here’s a comment […]
Esper et al [2002] divides trees into "linear" and "nonlinear" trees depending on their growth – a classificaiton that is idiosyncratic to this publication as far as I can tell. Esper at al. [2002] provides a citation to a publication "in press" that supposedly explains this, but I can’t locate any explanation in the publication. […]
Jaemtland is one of the sites used in Esper et al [2002]. Here is some benchmark information on this site to help see its role, if any, in contributing to any hockey-stick-ness in Esper.
Mann’s answer to the Barton Committee included a bizarre tirade about title to his computer code, which made me ruminate about the tort of conversion. It’s hard to imagine that Mann has done something that is probably unprecedented in the entire history of responses to a congressional committee – the answer to the congressional committee […]
Barton’s question 7d asked MBH about other verification statistics. We’ve discussed their withholding of the R2 statistic here, here and here. In our GRL article, we also pointed out that their 15th century reconstruction also failed the CE statistic, another verification statistic used in dendroclimatic studies [Cook et al, 1994]. Mann’s retort was that climatologists […]
Esper considered three different methods of standardizing tree ring widths and concluded: For the Gotland TRW data, the resulting three different chronologies do behave differently in the late 19th and 20th centuries. Such difference would influence one’s interpretation of the climate history represented by these chronologies.
Sunday usually has about half the traffic of a weekday, but yesterday we had the most hits ever – over 6200. There were a lot of hits on Labor Day as well, so our audience may be changing a little. The hit count probably isn’t apples and apples to hits earlier in the year, since […]
I’ve recently shown some histograms for site ring widths and opined that they loooked somewhat gamma-ish. Louis Hissink said that they looked log-normal to him. Louis is right for Gotland anyway.
Climate Audit 