Co-author Kevin Hamilton concludes, “If our model results prove to be representative of the real global climate, then climate is actually more sensitive to perturbations by greenhouse gases than current global models predict, and even the highest warming predictions would underestimate the real change we could see.“

Another day, another study that suggests we face climate impacts on the high end of current projections.

Contrary to the observation-free wishful thinking of the disinformers and confusionists, the best scientific evidence is, “Clouds Appear to Be Big, Bad Player in Global Warming” — an amplifying feedback (sorry Lindzen and fellow deniers).  That was how Science described one major 2009 study.