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Bürger Comment on Osborn and Briffa 2006
Gerd Bürger published an interesting comment in Science 2006 on cherry-picking in Osborn and Briffa 2006. A few CA readers have noticed the exchange and brought it to my attention. Eduardo Zorita (who...
View ArticleIn the Mail
I’ve reported before that Science decided not to require Osborn and Briffa 2006 to provide supporting measurement data for their Taimyr, Tornetrask and “Polar Urals” (Yamal) chronologies. While I...
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Science – Email #39
One more attempt to extract data. This the 39th email in my correspondence with Science and I still don’t have a complete record on either Esper et al 2002 or Osborn and Briffa 2006. And people wonder...
View ArticleAnother Inch at Sciencemag
Update: Continued here I just heard back from Science on the continuing and frustrating effort to obtain data from Esper et al. [2002] and Osborn and Briffa [2006], last discussed here . I got...
View ArticleMore Correspondence with Science
Update: Next instalment here On March 16, Science sent me 10 (out of 14) measurement data sets used by Esper; one gridcell temperature series used by Osborn-Briffa and caused Briffa to archive annual...
View ArticleReply to Science
As noted a couple of days ago, I received a response from Science in respect to my request for data from Osborn and Briffa [2006]. They asked that the response be confidential, but pointed me to a file...
View ArticleAn Open Letter to Science
An open letter has been sent to Science on archiving by Benny Peiser, Sir Colin Berry, Freeman Dyson, Chris de Freitas, Mick Fuller and Lord Taverne. Here it is: 22 February 2006 Science R. Brooks...
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More O.B. Confidential
Osborn and Briffa site chronologies differed from Esper site chronologies for 4 sites. Site chronologies can differ depending on the standardization method used; in order to analyze the effect, one...
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O.B. Confidential
I’m up to 38 emails back and forth with Science now in trying to get data. A little more drifted in April, about which I’ll report on in a couple of posts. My most recent progress report was here One...
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Taimyr in Esper and Osborn-Briffa
The chronologies for Taymir in Esper et al [2002] and Osborn and Briffa [2006] differ – not a whole lot but enough to be noticeable. Esper provided measurement data for Taymir, while Osborn and Briffa...
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The Yamal Substitution
The Polar Urals temperature reconstruction (Briffa et al, 1995) has been a mainstay of multiproxy studies. More data was collected at this site in 1998 (russ176), but in the two new studies (Osborn and...
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The Proxies of Osborn and Briffa [2006]
David Stockwell was intrigued by the seeming “robustness” of O&B results. There’s a reason for it: pretty much every one of the stereotyped Hockey Team proxies that are common to multiple studies...
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Review of Osborn and Briffa [2006]
Osborn and Briffa [2006] , published today in Science, cannot be considered as an “independent” validation of Hockey Stick climate theories, because it simply re-cycles 14 proxies, some of them very...
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