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.
Hansen’s twin pit bulls, Tamino and Gavin, have launched into a spirited defence of Mannian paleo-phrenology at realclimate here, with a counter-discussion at Bishop Hill here.
One of the more controversial issues in WG2 arose out of Robert Muir-Wood’s calculations on climate-related damages – Pielke Jr taking issue http://rogerpielkejr.blogspot.com/2010/02/ipcc-mystery-graph-solved.html and http://rogerpielkejr.blogspot.com/2010/01/hot-on-trail-of-ipcc-mystery-graph.html. Muir-Wood was a Contributing Author to IPCC AR4. Earlier this year, I attempted to obtain data used in the underlying publications in order to carry out statistical analyses. I wrote [...]
Ryan O asked serial Mann coauthor, Caspar Ammann, for supporting data for Ammann et al (PNAS 2007), which was referred to in CCSP (2009c) Past Climate Variability and Change in the Arctic and at High Latitude, an assessment report that was, in turn, cited in the EPA Endangerment Finding. Ryan’s request was as follows: the [...]
