Raymond Pierrehumbert at realclimate has recently posted on climate sensitivity, citing Hegerl et al. [2003] approvingly. As less weight is being put on Hockey Team arguments, more weight is being put on these detection and attribution arguments. Maybe I’ll put a few inquiries out for data and methodology on these studies. For now, I’ll point […]
Obviously one of the major themes of the M&M articles is the remarkable lack of robustness of MBH98. Bürger and Cubasch, hot off the press at GRL, asks the following question: whether or not the MBH98 and relative approaches are robust, including the predictor selection issues as argued by McIntyre and McKitrick [2005a], is the […]
There is a long article in Volkskrant dated Dec. 10, 2005, in which journalist Martin van Calmhout, among other things, expressed his consternation at seeing an English translation and discussion of a previous article on Mann on climateaudit within a half day of publication (see here). We’ll try to be equally prompt this time. Here’s […]
Overpeck gave the Bjerknes Lecture at AGU, modestly entitled “Anticipating the Big Impacts of Anthropogenic Carbon Dioxide Increases”. It was in the largest forum — about 1000 people were there. The room was filled to overflowing and you simply could not get in if you were late.
The Wall Street Journal mentioned us editorially yesterday here . While it’s nice to be mentioned, they incorrectly say the following: The Canadians found that the Medieval warm period had indeed occurred, suggesting that periods of warming and cooling were natural trends unrelated to the number of SUVs on the road. Readers of this blog […]
The size of the AGU convention is really daunting. Up to Thursday, there were 11,903 attendees. But that doesn’t really portray the size of the presentation effort. Most of those attendees are also presenters. I didn’t see a total of the number of oral and poster presentations, although it would be readily available from AGU. […]
A reader has kindly sent in an Excel spreadsheet here digitizing two series in the Mann et al [EOS 2003] spaghetti graph. It definitely looks as though the Crowley and Lowery version is some sort of transposition of MBH99 (good spotting by Tim Lambert), which definitely enhances the supposed similarity between the two graphs. Jones […]
Here’s an interesting calculation showing remarkable coherence between multiproxy averages of red noise, when proxies are shared.
Von Storch et al. [2004] argued that the reduced variability of MBH and Jones et al [1998] was possibly due to the use of inverse regression. This hypothesis has received a fair of attention as a rival candidate for the microscopic honor of breaking the hockey stick. I obviously think that our analysis in terms […]
In response to the high-variability recosntruction of Esper et al. [2002] posted up here , Mann and Hughes [Science 296, 848 (2002)] replied: The basis used by Esper et al. for comparison with previous studies of NH temperature trends over the past millennium is flawed [imagine Mann calling someone else’s work "flawed"] … Some of […]
Climate Audit 
More Rants from Volkskrant
There is a long article in Volkskrant dated Dec. 10, 2005, in which journalist Martin van Calmhout, among other things, expressed his consternation at seeing an English translation and discussion of a previous article on Mann on climateaudit within a half day of publication (see here). We’ll try to be equally prompt this time. Here’s […]