Nice work Willis on your enlightening articles, and I quiet agree with Bill that volcanoes might have a greater impact on sea ice conditions than has been previously thought.

Watts Up With That?

Guest Post by Willis Eschenbach

Back in 2010, I wrote a post called “Prediction is hard, especially of the future“. It turned out to be the first of a series of posts that I ended up writing on the inability of climate models to successfully replicate the effects of volcanoes. It was an investigation occasioned by the oft-repeated claim from the modelers that the models are wizards at replicating volcanoes, such as this claim from Andrew Lacis:

There we make an actual global climate prediction (global cooling by about 0.5 C 12-18 months following the June 1991 Pinatubo volcanic eruption, followed by a return to the normal rate of global warming after about three years), based on climate model calculations using preliminary estimates of the volcanic aerosol optical depth. These predictions were all confirmed by subsequent measurements of global temperature changes, including the warming of the stratosphere by…

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