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 […]
Bishop Hill draws attention to the publication of Trenberth’s comment on Spencer and Braswell 2011 in Remote Sensing. Unlike Trenberth’s presentation to the American Meteorological Society earlier this year (see here here here, Trenberth et al 2011 was not plagiarized. The review process for Trenberth was, shall we say, totally different than the review process […]
UC (whose comments should always be read attentively) wondered the other day about the effect of taking monthly normals – a step that is routine in much climate analysis as a preliminary to analysis. In the case of Dessler v Spencer, both parties to the litigation work after-taking monthly normals ( “post-normal” statistics, so to […]
CERES data, as retrieved in its original state (see here) provides all-sky and clear-sky time series. Dessler 2010 made the curious decision to combine ERA clear-sky with CERES all-sky to get a CLD forcing series. This obviously invites the question about the impact of using CERES clear-sky in combination with CERES all-sky to calculate the […]
Climate Audit 