Quiet blogging lately for a variety of reasons. In today’s post, I’m going to spend some time parsing RegEM (Truncated Total Least Squares) methodology, in itself hardly a standard technique, but particularly quirky in the Mann et al 2008 implementation. In the analysis leading up to O’Donnell et al 2010, we ported the Tapio Schneider […]
William Brune, who acted as a “consultant” to the Penn State Inquiry Committee will be discussing the Mann misconduct “inquiry” in Boulder tomorrow Wednesday, October 5, 2:15 PM (Refreshments at 2:00 PM) at the David Skaggs Research Center, Room 2A305. Directions http://www.esrl.noaa.gov/about/visiting.html The seminar is a Chemical Science Division seminar entitled “Climategate, Michael Mann, and […]
The recent report of the EPA Office of Inspector General(OIG) contains a remarkable dispute between the OIG on the one hand and EPA and the Office of Management and Budget (OMB) on the other as to whether the Technical Support Document (TSD) for the Endangerment Finding was a “highly influential scientific assessment”, a defined category […]
In our recent discussion of Dessler v Spencer, UC raised monthly centering as an issue in respect to the regressions of TOA flux against temperature. Monthly centering is standard practice in this branch of climate science (e.g. Forster and Gregory 2006, Dessler 2010), where it is done without any commentary or justification. But such centering […]
Scripts and data for Lindzen and Choi 2011 are now online at CA here together with the original article. It will take me a little while to get to this. The scripts are in IDL. Translations to R welcomed.
Dessler (2011) reported the following: A related point made by both LC11 and SB11 is that regressions of TOA flux or its components vs. ΔTs will not yield an accurate estimate of the climate sensitivity λ or the cloud feedback. This conclusion, however, relies on their particular values for σ(ΔFocean) and σ(ΔRcloud). Using a more […]
Brian Hoskins was one of the first people that Fiona Fox went to for a testimonial to the supposed rigor of the execrable Oxburgh inquiry. Hoskins, presently Bob Ward’s supervisor at the Grantham Institute, shamelessly called the Oxburgh inquiry “thorough and fair”. Although no one has yet pointed this out (partly because of efforts to […]
Troy_CA has another excellent contribution to the continuing analysis of Dessler 2010 and Dessler 2011 (h/t Mosher for alerting me) CA readers are aware that the sign of the regression coefficient from Dessler 2010 is reversed when CERES clear sky is used in combination with CERES all sky, instead of replacing CERES clear sky with […]
In the last couple of days, there has been much to-do in glacier world about an error in the Times Atlas on Greenland glaciers. See for example here here here. Unlike the authors of 1000-year temperature reconstructions, glaciologists seem to be concerned about things like using data upside down. As of today, the Times Atlas […]
Fred Pearce reported in the The Climate Files (page 54): When I phoned Jones on the day the emails were published online and asked him what he thought was behind it, he said: “It’s about Yamal, I think”. The word turns up in 100 separate emails, more than “hockey stick” or any other totem of […]
Climate Audit 