And still they come
Aug 14, 2008
Bishop Hill in Climate: CA, Climate: MWP, Climate: McIntyre

Well, two days on and the visitor numbers are still heading upwards. I've been enjoying seeing how people are reacting, and mostly it's been very positive. There have been visitors from all parts of the world, with a current surge from Australia, where the story has been picked up by Andrew Bolt of the Courier Mail Herald Sun, which is the first MSM link for the story. I also note with amusement that people are discussing my article in a bondage forum - when you're bored with talking dirty you can always have a chat about statistics, I suppose.

One interesting reaction was from Professor Barry Brook, the biologist who heads the Research Institute for Climate Change and Sustainability at the University of Adelaide. Prof Brook responded to a commenter who had pointed him at my hockey stick article saying:

[T]here’s really no need, as this hoary old chestnut has already been gathered, roasted and eaten. If the folks at Climate Audit choose not to keep up to date, or to ignore any refutation, that’s their limitation.

Which is peculiar because if you follow those links, the scientific argument presented is all about principal components analysis (how the temperature reconstruction was extracted from the tree rings) which is something that I didn't mention at all in my article. The scientific part of my posting was about verification using the RE statistic (how well did the temperature reconstruction they extracted matched up against known temperatures in the past) , and isn't mentioned in any of Professor Brook's "refutations". I've asked him to explain, and also to give us the benefit of his opinions of Wahl and Amman's benchmarking procedures. It will be interesting to hear what he has to say.

If you are interested in the earlier story of the creation of the hockey stick, there's a popular science article here (h/t Steve McIntyre) which covers this earlier tale. It's just as scandalous, but equally mathematical.

Another interesting discussion has been the Prometheus blog where Roger Pielke Jnr discusses the "corruption of science" angle.


Article originally appeared on (
See website for complete article licensing information.