Still tricking people
Apr 25, 2011
Bishop Hill in Climate: Briffa, Climate: Mann

I was sent this presentation given by Australian scientist, Professor Will Steffen. This was apparently presented to the Multi-party Climate Change Committee (MCCC) in Canberra.

Interestingly Professor Steffen has chosen to present a copy of the spaghetti graph from Mann et al (2003). The full complement of authors is: Mann, Ammann, Bradley, Briffa, Jones, Osborn, Crowley,  Hughes, Oppenheimer, Overpeck, Rutherford, Trenberth and Wigley. In other words, the author team includes just about every scientist implicated in wrongdoing in the Climategate emails.

Here's the spaghetti graph - with a blowup of the interesting part. It's the orange line (Briffa 2001) you are interested in:

It does rather look to me as if Professor Steffen has chosen to present a spaghetti graph which truncates the divergence in Briffa's famous tree ring series.

"Hide the decline" still being used to "trick" people over a year after it was exposed.

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