Starting with the first of my recent posts on Yamal, I raised the issue of whether the CRU 12 actually came from a homogeneous population to the subfossil population. This issue was related to the surprisingly small sample size of the supposedly “highly replicated” Yamal chronology, but is distinct. In his online response to Yamal […]
See comments introducing this extremely interesting article. UPDATE: Since some readers are having routing issues downloading/reading this Devi et al paper, I have mirrored it here (PDF) for your convenience. – Anthony
After a year of stonewalling, Mann has published an update at his “grey” Supplementary Information (not yet reported at PNAS) in which he acknowledges an “error” in his figure S8a as follows: UPDATE 4 November 2009: Another error was found in the corrected Supplementary figure S8a from December 2008: The previously posted version of the […]
The following two Google maps show Taimyr and Yamal on consistent scales, together with Schweingruber sites in the area. The Taimyr chronology in Briffa 2000, as you may recall, not only didn’t have HS, but had a notable divergence problem. I’ve tried to accurately transcribe onto this location map the Naurzbaev 2002 sites (subfossil – […]
Jean S writes: Seems like Steve will be on Finnish TV next Monday 🙂 http://ohjelmat.yle.fi/mot/etusivu I guess this image is from the CA headquarters 😉 Steve: Yes, this is indeed me at CA world headquarters. 9.11.2009 Klo 20:00 MOT: Ilmastokatastrofi peruutettu Kööpenhaminan ilmastokokouksen lähestyessä kauhumaalailu ilmastokatastrofin seurauksista kiihtyy. Mediat täyttyvät uutisista, jotka kertovat jäätiköiden sulamisista, […]
The Yamal reconstruction was introduced in Briffa 2000, a survey paper that did not include elementary information like core counts. As a result, users of the Briffa 2000 Yamal reconstruction (including Mann and Jones 2003, Moberg 2005, Hegerl 2007; D’Arrigo 2006, IPCC 2007, etc…) used it without any knowledge that the core counts did not […]
As noted at CA last week, Briffa published a partial response to Yamal issues at the CRU website, one post discussing the impact of the Yamal chronology in various studies and another post discussing the Yamal chronology itself. For a response to Briffa’s online article on the impact of Yamal, I refer readers to last […]
As I surmised, Science has taken a dim view of Kaufman’s failure to provide data that was supposedly “publicly available” and most of the problems have now been dealt with. There are still a couple of issues though. The three Finnish sediment series and one Canadian series have now been archived: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/nautajarvi2005.txt ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/korttajarvi2003.txt ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.txt ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/ellesmere/c2-1996.txt […]
Esper et al (Global Change Biology, in press) “Trends and uncertainties in Siberian indicators of 20th century warming” is relevant to our present consideration of Briffa’s Yamal, which I will get to shortly. The cutline in their abstract declares in effect that the divergence problem is not as “bad as we thought”: Despite these large […]
William Connolley is still, shall we say, manfully pretending not to understand how sediments affected by bridge-building, ditches and agriculturally activity cannot be excellent temperature “proxies” if they correlate with NH temperature. Amazingly, some of his readers, like PNAS editors and referees, take this sort of stuff seriously. Just for fun, I’ve constructed an example […]
Climate Audit 