Yamalian yawns

Worse, McIntyre has claimed in his appeal that the length of time since the Briffa et al (2008) paper implies that the regional Yamal reconstruction has been suppressed for nefarious motives. But I find it a little rich that the instigator of a multitude of FOI requests, appeals, inquiries, appeals about inquires, FOIs about appeals, inquiries into FOI appeals etc. is now using the CRU’s lack of productivity as a reason to support more FOI releases. This is actually quite funny.

Furthermore, McIntyre is using the fact that Briffa and colleagues responded online to his last deceptive claims about Yamal, to claim that all Yamal-related info must now be placed in the public domain (including, as mentioned above, unpublished reconstructions being prepared for a paper). How this will encourage scientists to be open to real-time discussions with critics is a little puzzling. Mention some partial analysis online, and be hit immediately with a FOI for the rest…?

The history of this oddity (and it is odd) dates back to McIntyre’s early obsession with a reconstruction called the “Polar Urals” Briffa et al. (1995). This was a very early attempt at a local multi-proxy reconstruction, using a regression of both tree-ring widths and densities. McIntyre has previously objected to observations that 1032 was a particularly cold year in this reconstruction (though it was), that the dating of the trees was suspect (though it wasn’t), and that no-one revisited this reconstruction when reprocessed chronologies became available. [Little-known fact: McIntyre and McKitrick submitted a comment to Nature complaining about the dating issues in 1995 paper around Dec 2005/Jan 2006, which was rejected upon receipt of Briffa’s response (which was an attachment in the second tranche of CRU emails). Neither this submission, the rejection (for good cause), nor the Polar Urals dating issue have been mentioned on Climate Audit subsequently.]

Around this point, McIntyre got the erroneous idea that studies were being done, but were being suppressed if they showed something ‘inconvenient’. This is of course a classic conspiracy theory and one that can’t be easily disproved. Accusation: you did something and then hid it. Response: No I didn’t, take a look. Accusation: You just hid it somewhere else. Etc. However, this is Keith Briffa we are talking about: the lead author of Briffa et al, (1998)(pdf) describing the “inconvenient” divergence problem in some tree ring density records, a subject that has been described and taken up by multiple authors – Jacoby, D’Arrigo, Esper, Wilson etc. Why McIntyre thought (thinks?) that one single reconstruction was so special that people would go to any lengths to protect it, while at the same time the same people were openly discussing problems in reconstructions across the whole northern hemisphere, remains mysterious.

Similarly, McIntyre recently accused Eric Steig of suppressing ‘inconvenient’ results from an ice core record from Siple Dome (Antarctica). Examination of the record in question actually demonstrates that it has exceptionally high values in the late 20th Century (reflecting the highest temperatures in at least the last 700 years, Mayewski et al.), exactly counter to McIntyre’s theory. McIntyre made these accusations public “a couple of days” – his words – after requesting the data, since apparently university professors have nothing more pressing to do than than respond instantly to McIntyre’s requests. In short, you have to give McIntyre what he wants within 48 hours or he will publicly attack your integrity. Unsurprisingly, no apology for that unjustified smear has been forthcoming.

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References

  1. K.R. Briffa, V.V. Shishov, T.M. Melvin, E.A. Vaganov, H. Grudd, R.M. Hantemirov, M. Eronen, and M.M. Naurzbaev, "Trends in recent temperature and radial tree growth spanning 2000 years across northwest Eurasia", Philosophical Transactions of the Royal Society B: Biological Sciences, vol. 363, pp. 2269-2282, 2008. http://dx.doi.org/10.1098/rstb.2007.2199
  2. K.R. Briffa, P.D. Jones, F.H. Schweingruber, S.G. Shiyatov, and E.R. Cook, "Unusual twentieth-century summer warmth in a 1,000-year temperature record from Siberia", Nature, vol. 376, pp. 156-159, 1995. http://dx.doi.org/10.1038/376156a0
  3. K.R. Briffa, F.H. Schweingruber, P.D. Jones, T.J. Osborn, I.C. Harris, S.G. Shiyatov, E.A. Vaganov, and H. Grudd, "Trees tell of past climates: but are they speaking less clearly today?", Philosophical Transactions of the Royal Society B: Biological Sciences, vol. 353, pp. 65-73, 1998. http://dx.doi.org/10.1098/rstb.1998.0191
  4. P.A. Mayewski, K.A. Maasch, J.W.C. White, E.J. Steig, E. Meyerson, I. Goodwin, V.I. Morgan, T. van Ommen, M.A.J. Curran, J. Souney, and K. Kreutz, "A 700 year record of Southern Hemisphere extratropical climate variability", Annals of Glaciology, vol. 39, pp. 127-132, 2004. http://dx.doi.org/10.3189/172756404781814249