The Hockey Schtick
"A new paper published in the Journal of Geophysical Research - Atmospheres finds the latest generation of IPCC climate models were unable to reproduce the global dimming of sunshine from the ~ 1950s-1980s, followed by global brightening of sunshine during the 1990's. These global dimming and brightening periods explain the observed changes in global temperature over the past 50-60 years far better than the slow steady rise in CO2 levels. The authors find the models underestimated dimming by 80-85% in comparison to observations, underestimated brightening in China and Japan as well, and that "no individual model performs particularly well for all four regions" studied. Dimming was underestimated in some regions by up to 7 Wm-2 per decade, which by way of comparison is 25 times greater than the alleged CO2 forcing of about 0.28 Wm-2 per decade. The paper demonstrates climate models are unable to reproduce the known climate change of the past, much less the future, that the forcing from changes in solar radiation at the Earth surface is still far from being understood and dwarfs any alleged effect of increased CO2."
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