Yesterday we noted that “validation” in M08 means that the average of the “late-miss” and “early-miss” RE statistic is above a benchmark of about 0.35. I take no position at present whether this unusual methodology means anything, though I’m a bit dubious. I also observed that the with-dendro reconstructions added surprisingly few series in the […]
In September 2008, Mann et al reported a “significant development” in paleoclimate reconstructions – a “skillfull” reconstruction without tree ring data for over 1300 years. A skillful EIV reconstruction without tree-ring data is possible even further back, over at least the past 1,300 years, for NH combined land plus ocean temperature (see SI Text). This […]
Roman M and TomRude have observed an interesting letter writing campaign in which Michael Mann contests adverse opinion in provincial newspapers, accusing the letter writers of being “parrots”. Today (July 31, 2010), Mann sent the following letter to the Saint John (New Brunswick) Telegraph Journal objecting to a letter published July 30. Similar letters were […]
NASA blogger Gavin Schmidt as part of his ongoing attempt to rehabilitate Mannian paleoclimate reconstructions, characterized here as dendro-phrenology, has drawn attention to a graphic posted up at Mann’s website in November 2009. In this graphic, Mann responded to criticisms that his “no-dendro” stick had been contaminated by bridge-building sediments despite warnings from the author […]
A news release on a new tree ring study here (h/t Anthony Watts) reported a reconstruction maxing out in the mid-20th century, with the characteristic late 20th century divergence problem. Their results contrast with CRU’s notorious Yamal chronology: Following the summer temperature reconstruction on the Kola Peninsula, the researchers compared their results with similar tree-ring […]
The EPA, as expected, has denied the various petitions for reconsideration of their Endangerment Finding. They refer to the various “inquiries” on some points. Interesting reading here http://epa.gov/climatechange/endangerment/petitions.html
Self-described “Hansen bulldog” Tamino, writing at NASA’s realclimate blog hosted by Hansen’s other bulldog (Gavin), wrote: As another example, Montford makes the claim that if you eliminate just two of the proxies used for the MBH98 reconstruction since 1400, the Stahle and NOAMER PC1 series, “you got a completely different result — the Medieval Warm […]
David Holland’s adventures with Met Office dishonesty is covered in a recent article in a law journal [link] and in a radio segment here *=(h/t Bishop Hill.) Untruthful answers by the UK Met Office to David Holland’s FOI requests were discussed at CA in 2008. Holland followed up with CRU, thus the “delete any emails” […]
Tamino’s realclimate post re-states points that I’ve discussed at length in the past. Here is a re-posting of a 2008 post on Tamino that deals with most of the issues in his realclimate post.
Climate Audit 