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De Omnibus Dubitandum - Lux Veritas

Tuesday, January 8, 2013

Arch Warmers Tacitly Acknowledge Any Human Effect on Climate is Lost in Noise


So what do the climate Cluesos have to tell us this time? Have they now successfully identified a human influence on the climate system? The Fun thing about the title is that it is immediately contradicted by the abstract, in which we find this telling passage:

"We use simulation output from 20 climate models participating in phase 5 of the Coupled Model Intercomparison Project. This multimodel archive provides estimates of the signal pattern in response to combined anthropogenic and natural external forcing (the finger- print) and the noise of internally generated variability. Using these estimates, we calculate signal-to-noise (S/N) ratios to quantify the strength of the fingerprint in the observations relative to fingerprint strength in natural climate noise."

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