http://tech.mit.edu/V130/N45/yost.html

Global warming is real. It is predominantly anthropogenic. Left unchecked, it will likely warm the earth by 3-7 C by the end of the century. What should the United States do about it?

I drew a 5C/century trend (purple) on top of the actual decadal trend (green – measured El Nino peak to peak.)

Where do people come up with these nonsensical forecasts of 5C warming in the next ninety years? They are off by almost two orders of magnitude.