Further to the lengthy article by Antionio Regalado on Feb. 14, 2005, the Wall Street Journal on Feb. 18, 2005 had an editorial referring to the present matter: Mr. Mann’s chart was both a scientific and political sensation. It contradicted a body of scientific work suggesting a warm period early in the second millennium, followed […]
Melanie Phillips says: so many people have made huge reputations from all this rubbish. What an astonishing scientific scandal this is, and growing by the day. Link
Kevin Vanes writes at Roger Pielke’s site: The WSJ highlights what Regaldo and McIntyre says is Mann’s resistance or outright refusal to provide to inquiring minds his data, all details of his statistical analysis, and his code. The WSJ’s anecdotal treatment of the subject goes toward confirming what I’ve been hearing for years in climatology […]
Jerry Pournelle writes at Chaos Manor I had refrained from commenting on the "hockey stick" because I couldn’t understand how it was derived. I’ve done statistical analysis and prediction from uncertainty much of my life. My first job in aerospace was as part of the Human Factors and Reliability Group at Boeing, where we were […]
Wilmking et al. carried out a comprehensive sampling of 1558 white spruce trees at 13 treeline sites in the Brooks Range and Alaska Range. The date of the sampling is not stated but seems to be between 2000 and 2003 and includes the warm 1990s. These findings cover the same species as were primarily used […]
Moberg et al. [2005] use the July temperature reconstruction of Korhola et al. [2000] using Lake Tsoulbmajavri diatoms as one of 11 low-frequency proxies, as shown in Figure 4 of Korohla et al. reproduced below. There is obviously nothing in this reconstruction that is inconsistent with a pre-hockey stick view of climate history. . (Original) […]
I’m off to be interviewed by the Dutch television program Netwerk, on the station KRO. It airs this evening Dutch time. Update: this is online here. I was on television on Tuesday for the first time in my life – ROB TV in Toronto online here about halfway throught the show (Squeeze Play), so this […]
The Chesapeake Bay Mg/Ca proxy goes to late 1995 and is used in both Moberg et al [2005] and Mann and Jones [2003] for the proxy reconstructions up to 1980. Figure 1 below shows that its post-1980 behavior does not show an exceptional response to supposedly unprecedented temperature. Figure 1. Chesapeake Bay Spring SST. Re-plotted […]
D’Arrigo et al. [GRL 2004] reports on tree rings taken from the Seward Peninsula in northwestern Alaska from white spruce from 14 sites near elevational treeline in summer 2002. We show here their figures, demonstrating that the "proxy" show no evidence of the warm 1990s and hot 1998, raising questions about the ability of this […]
I get a lot of questions about post-1980 proxies and I find it a very interesting question. One would expect that 1998 – the "warmest" year of the millennium – and the 1990s – the "warmest decade" of the millennium would leave a loud signal in a valid proxy. I’m going to start discussing some […]
Climate Audit 
More Commentary #4: Wall Street Journal Editorial
Further to the lengthy article by Antionio Regalado on Feb. 14, 2005, the Wall Street Journal on Feb. 18, 2005 had an editorial referring to the present matter: Mr. Mann’s chart was both a scientific and political sensation. It contradicted a body of scientific work suggesting a warm period early in the second millennium, followed […]