It seems that in the latest publication from CRU’s Keith Briffa, they decided to leave out those elements (The most influential tree in the world) Steve identified that led to the Yamal Superstick.
Have a look at this remarkable graph below.
Unreported by CRU is that they’ve resiled from the Yamal superstick of Briffa 2000 and Briffa et al 2008 and now advocate a Yamal chronology, the modern portion of which is remarkably similar to the calculations in my posts of September 2009 here and May 2012 here, both of which were reviled by Real Climate at the time.
In today’s post, I’ll demonstrate the degree to which the new Briffa version has departed from the superstick of Briffa 2000 and Briffa et al 2008 and the surprising degree to which it approaches versions shown at CA.
Figure 3. Comparison of Briffa et al 2008 superstick to yamal_trw chronology of Briffa et al 2013. Both in z-scores.
…the next graphic shows the two CA calculations that had been so reviled by CRU and Real Climate (the green chronology of Sept 2009 and the May 2012 calculation with updated information from Hantemirov). I think that I’m entitled to observe that the B13 chronology is more similar to the two reviled CA calculations than it is to the Briffa et al 2008 superstick. Needless to say, this was not reported in CRU’s recent Real Climate article.
Figure 4. Comparison of B13 Yamal chronology to CA (Climate Audit) calculations.
omnologos points out this missive from Gavin Schmidt on RealClimate:
The irony is of course that the demonstration that a regional reconstruction is valid takes effort, and needs to be properly documented. That requires a paper in the technical literature and the only way for Briffa et al to now defend themselves against McIntyre’s accusations is to publish that paper (which one can guarantee will have different results to what McIntyre has thrown together).
Looks like that guarantee expired.
Commenter ianl888 quips:
From Fig. 4 above:
it’s quite obvious that in 2009 and again in 2011, you shamelessly plagiarised Briffa 2013
Easily the worst sin in the academic book, run a close second only by disrupting the space-time continuum in order to perform the plagiarism
Too Funny! To prevent this from happening again, we need to establish a Pre-plagiarism Crimes unit, complete with a minority report. /sarc
Read Steve’s full report here: http://climateaudit.org/2013/06/28/cru-abandons-yamal-superstick/