So far, the focus of the discussion of the Marcott et al paper has been on the manipulation of core dates and their effect on the uptick at the recent end of the reconstruction. Apologists such as “Racehorse” Nick have been treating the earlier portion as a given. The reconstruction shows that mean global temperature […]
There has been a great deal of discussion on a recent CA thread on the efficacy of screening proxies for use in reconstructions by selecting on the size of the correlation between the proxy and the temperature during the calibration time period. During the discussion I asked Nick Stokes the following questions in a comment: […]
In examining the Briffa Yamal chronology, there has been a lot of emphasis (IMHO, correctly) placed on both the cherry-picking and the low core counts of the proxies which extend into recent times. However, the chronology also depends on the various methods used to adjust for various known biological effects and on the choices for […]
Every year, the Statistical Society of Canada has a case study competition for statistics students in Canada. The problem and the data are posted about six months before the annual meeting. Teams of students analyze the problem and then present their results at a poster session at the meetings. One of the two topics for […]
Yesterday, at 2:07 PM CA time (4:07 PM EDT), Rob Spooner posted the following comment in the Unthreaded n+2 thread: http://www.climateaudit.org/?p=5978#comment-353931 I’ve been asked to move a comment to this thread (or unthread), so here it is. I have run into a small problem with some NASA methodology. Looking at http://climate.nasa.gov/keyIndicators/ and just eyeballing the […]
Jeff Id on the Air Vent has written a post pointing out the recent publication online of a report by the Committee on Ensuring the Utility and Integrity of Research Data in a Digital Age from the National Academy of Sciences: Ensuring the Integrity, Accessibility, and Stewardship of Research Data in the Digital Age. I […]
I have been rejected at RealClimate! My first rejection! I have not posted there in about two years although I have occasionally read some of their consensus defences when they were relevant to what I have been looking at. They have been running a Steig Corrigendum thread concurrent with ours and I have followed it […]
There has been a good deal of discussion regarding the correlation between temperatures at various locations throughout Antarctica. Several people have looked at the relationship between correlation and distance by creating graphs linking the two. IMO, one of the difficulties in interpreting these is that they are affected by a variety of factors, including the […]
Thanks to some insight from Ryan O (#43), we have been able to make progress on the puzzle of where the values in the Steig paper came from. In fact, it now is quite apparent that Steig et al used the reconstructions based on the AVHHR satellite data rather than the ones based on the […]
Ok, coffee break’s over, back on your heads! Let’s get back to business here… I like puzzles. They provide no end of intellectual entertainment – and there is a thrill with figuring out the solution, particularly if the solution is done in a particularly elegant fashion. A good source of puzzles seems to be climate […]
