In response to an inquiry to Scott Saleska, Dan Kirk-Davidoff, a prominent expert in the field, has sent the following suggestions: Soden and Held 2006, An Assessment of Climate Feedbacks in Coupled Ocean—Atmosphere Models, J. Climate 19:3354, DOI: 10.1175/JCLI3799.1 reviews the relative role of various feedbacks in the IPCC AR4 runs. Held and Soden, “Water […]
In our continued search for evidence supporting the IPCC 4AR SPM claim that “”Studies since the TAR draw increased confidence from additional data showing coherent behaviour across multiple indicators in different parts of the world”, I am reviewing upper treeline North American site chronologies specifically mentioned in the short Wilson and Luckman 2003 survey of […]
Continuation of Unthreaded #7
In my continuing search for updated dendroclimatological temperature proxies, I started by looking at what had been archived at ITRDB; this has proved to be a very disappointing source of candidates. I’ve re-canvassed some literature for candidate unarchived information. In an email, Connie Woodhouse mentioned that their efforts with upper treeline sites in the U.S. […]
Wilson and Luckman 2003 observe: The first PCs from the RW and MXD PCA are naturally orthogonal (r = —0.006) over the 1900—1991 period suggesting the in’?fluence of different forcing mechanisms upon these parameters. They move on without pausing here, but this point should not be left without a commentary. The issue here is one […]
I’ve been reading through some articles on altitudinal reconstructions by Rob Wilson and other Luckman students. The studies all follow a similar strategy as Wilson et al 2007 – principal components analysis; truncation to eigenvalues 1, varimax rotation and regression. It’s pretty obvious that these operations are all linear and if the linear algebra were […]
I’ve reported here on my progress with UEA in obtaining identification of the sites used in Jones et al 1990, a study of the urban heat island effect. [Update – the Jones et al data was posted up here. ] I initially inquired a couple of years ago as I mentioned here. I sent an […]
bender drew our attention to the following interesting paper from Evans et al (including Heghes and Vaganov) attempting the salutory exercise of forward modeling tree ring site chronologies from climate data. bender quoted from the intro: Two major uncertainties lie in the statistical development, analysis and interpretation of tree-ring data for paleoclimate studies. First, there […]
here . Decision was 5-4 split decision ruling against EPA, more or less breaking along party lines. STEVENS, J., delivered the opinion of the Court, in which KENNEDY, SOUTER, GINSBURG, and BREYER, JJ., joined. ROBERTS, C. J., filed a dissenting opinion, in which SCALIA, THOMAS, and ALITO, JJ., joined. SCALIA, J., filed a dissenting opinion, […]
(2012 Update…) CA was the first blog to discuss the recent papers by Wilmking and his associates on “positive and negative responders” – the opposite response of trees to recent warming in which – at the same site – some trees responded positively and some negatively. This is an important observation in trying to provide […]
Climate Audit 
Ruling in Mass v EPA
here . Decision was 5-4 split decision ruling against EPA, more or less breaking along party lines. STEVENS, J., delivered the opinion of the Court, in which KENNEDY, SOUTER, GINSBURG, and BREYER, JJ., joined. ROBERTS, C. J., filed a dissenting opinion, in which SCALIA, THOMAS, and ALITO, JJ., joined. SCALIA, J., filed a dissenting opinion, […]