The apparent inconsistency of ring width chronologies with analysis of changes in treeline elevation has long been an issue that I’ve urged specialists to address. Unfortunately Briffa et al 2013 failed to address the inconsistency at Polar Urals, even though they took note of an obsolete Shiyatov article on treeline changes. (More recent work by […]
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 […]
Nearly all readers agreed with the proposal (of my most recent post) for a comprehensive mapping and crossdating of all dead and living trees within one or more altitudinal transects in the Polar Urals, with the objective of achieving a crossdated dataset of at least 1000 subfossil trees and 500 living trees, each with accurately […]
A commenter at Real Climate asked the following interesting question about the Urals/Yamal area reported in Briffa et al 2013: So, for this region, what data do you wish you had, that could be plausibly gotten (i.e, not like 1000-year-old measured temperature records), that you don’t have? And why? Jim Bouldin of RC described the […]
Not in so many words, of course. However, Briffa et al 2013 took a position on the use of radially deformed tree ring cores that would prohibit the use of strip bark bristlecones in temperature reconstructions, thereby emasculating Mann’s reconstructions. And not just the Mann reconstructions, but the majority of the IPCC reconstructions used by […]
Ross McKitrick is hosting a workshop entitled “Econometric Applications in Climatology” – see website here and here. A detailed program is online here. Ross has attracted an enviable representation from the econometric community. Invitations were widely extended to the climate community without the response that Ross had hoped for, though there will be some prominent […]
Briffa’s new paper on Yamal is online today here, together with Supplementary Information here. Yamal has been a longstanding issue at Climate Audit. The new article appears to be their long awaited response to criticism from Climate Audit (though this criticism is not referred to anywhere in the aticle.) In resisting FOI requests for their […]
I’m listening to a presentation by PAGES2K authors sponsored by Nature: NPG journal club: How has Earth’s climate changed in the past 2,000 years? #NPGjclub Started at 11 am Eastern. 11:30. Open for questions. I have submitted the following: Can you explain the decision to label the article as only a “Progress Article”, rather than […]
John Cook, whose crush on Lewandowsky continues unabated, asked various blogs, including Climat Audit, to direct readers to another online survey. Lucia has discussed the survey here. The links to the survey from SKS here is http://survey.gci.uq.edu.au/survey.php?c=1R9YT8YMZTWF and from Rabett hereis http://survey.gci.uq.edu.au/survey.php?c=II7WP4R4VRU7. More IDs are available at Lucia’s. It is easy enough to access both […]
Kaufman and paleo peer reviewers ought to be aware that the recent portion of varve data can be contaminated by modern agriculture, as this was a contentious issue in relation to Mann et al 2008 (Upside Down Mann) and Kaufman et al 2009. Nonetheless, Kaufman et al 2013 (PAGES), despite dozens of coauthors and peer […]
Climate Audit 