Figure 3  Illustration from RealClimate Post

On Steinman et al. (2015) – Michael Mann and Company Redefine Multidecadal Variability And Wind Up Illustrating Climate Model Failings

Guest Post By Bob Tisdale For the past few years, we’ve been showing in numerous blog posts that the observed multidecadal variations in sea surface temperatures of the North Atlantic (known as the Atlantic Multidecadal Oscillation) are not represented by the forced components of the climate models stored in the CMIP5 archive (which were used…

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Friday Funny – Mann Overboard at #AGU14

Today I visited the poster sessions again, where I’m not allowed to take photos. I also visited the commercial exhibition, where I am allowed photography. I was surprised to find that Mann’s penchant for hype even permeates that part of AGU 2014. It makes me wonder if they spent more on that big board display…

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Hilarious irony – Michael Mann to give lecture on ‘Professional Ethics for Climate Scientists’

From the ‘truth is stranger than fiction department’, reporting from San Francisco at the AGU Fall Meeting ED11D-02 Professional Ethics for Climate Scientists Monday, December 15, 201408:15 AM – 08:30 AM Moscone South 102 Several authors have warned that climate scientists sometimes exhibit a tendency to “err on the side of least drama” in reporting…

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Mann’s tree ring proxy train wreck

Eric Worrall writes: Mann’s thermometer spliced hockey stick has taken even more damage in the last few days, with Steve McIntyre helpfully providing reconstructions based on tree rings which demonstrate how, without the benefit of Mike’s scientifically dubious “nature trick”, the hockey stick simply disappears – tree rings demonstrably don’t correlate with temperature. According to…