A theme in many recent posts has been whether the USHCN and NASA adjustments are successful in achieving their goals. On a number of occasions, we’ve observed that the USHCN station history (SHAP) adjustment appears to be an odd statistical procedure and can be objectively seen to be unsuccessful in picking up recorded station moves. […]
Several recent posts and hundreds of associated comments have focused on the subject of temperature adjustments. TOBS, homogeneity, scribal records, rural versus urban … it is enough to make one’s head spin. I understand the desire to adjust data, but I often wonder if the problem is simply intractable and the adjustments we do have […]
First, let me thank me thank Judy Curry for inviting me to make a presentation at their seminar series and for both spending so much time and energy showing me around the department and hosting me so hospitably. I was the guest at many interesting presentations by able young scientists and at splendid lunches and […]
Many climate studies use an equirectangular projection, in which lines of latitude and longitude are equally spaced, to graphically summarize data. An example is the following figure from Hansen et al 1988, discussed here recently under the topic Hansen and Hot Summers: John Goetz uses the same projection in his recent thread here, Historical Station […]
In his comment to How much Estimation is too much Estimation?, Anthony Watts suggested I create a scatter plot showing station distribution with latitude/longitude. It turned out not to be the ordeal I thought it might be, so I have posted some of the results in this thread. I started with 1885 and created a […]
Back in September when I was busy trying to figure out how Hansen combined station data, I was bothered by the fact that he used annual averages as the basis for combining scribal records (via the “bias method”) rather than monthly averages, which are readily available in the records that he uses. In my thinking, […]
I’m going to Georgia Tech for a couple of days at the kind invitation of JEG (Julien Emile-Geay) and Judith Curry. I’ll be presenting at their Friday afternoon EAS seminar series (http://www.eas.gatech.edu/school/seminars/) (3:30 to 4:30), which is geared towards a broad scientific audience. In addition, I’ll be spending time with each of the protagonists, plus […]
Jablonowski and Williamson is here. Judith’s review follows.
Thanks to Leif Svalgaard for his continuing support of Svalgaard discussion, which is continued here (preceded by #2 here) and #1 here. Continued here.
Hansen et al 1988 reported that they expected extra warming in the SE United States, a theme that was mentioned in his testimony in Washington in summer 1987. Hansen et al 1988 stated: there is a tendency in the model for greater than average warming in the southeastern and central U.S. and relatively cooler or […]
Climate Audit 