IPCC's GCMs Seriously Fail - Peer reviewed paper

A new paper published by the Journal of Atmospheric and Solar Terrestrial Physics, authored by Nicola Scafetta, 2012: Testing an astronomically based decadal-scale empirical harmonic climate model versus the IPCC (2007) general circulation models. Entire paper available here.

From the Abstract:
We compare the performance of a recently proposed empirical climate model based on astronomical harmonics against all CMIP3 available general circulation climate models (GCM) used by the IPCC (2007) to interpret the 20th century global surface temperature. The proposed astronomical empirical climate model assumes that the climate is resonating with, or synchronized to a set of natural harmonics that, in previous works (Scafetta, 2010b, 2011b), have been associated to the solar system planetary motion, which is mostly determined by Jupiter and Saturn. We show that the GCMs fail to reproduce the major decadal and multidecadal oscillations found in the global surface temperature record from 1850 to 2011. 

From the conclusion:

The scientific method requires that a physical model fulfils two conditions: it has to reconstruct and predict (or forecast) physical observations. Herein, we have found that the GCMs used by the IPCC (2007) seriously fail to properly reconstruct even the large multidecadal oscillations found in the global surface temperature which have a climatic meaning. Consequently, the IPCC projections for the 21st century cannot be trusted.


From Dr Pierre Gosselin - No Trick Zone:
It’s not a secret that the IPCC models are all rigged to make CO2 look like the culprit for the last 150 years of warming. We say this because we now know their models completely ignore, or selectively distort, the potency of an array of drivers and amplification mechanisms.
In the paper, according to the abstract, Scafetta compares the performance of a recently proposed empirical climate model based on astronomical harmonics against all CMIP3 available general circulation climate models (GCM) used by the IPCC (2007) and finds that the climate appears to be resonating with, or is synchronized to, a set of natural harmonics that have been associated to the solar system planetary motion.



h/t  Pierre Gosselin and Notrickzone.

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