Yes, but most of that non-linear stuff in the article was known since the '70s and isn't approached naively. Means of connecting them together (presumably a modified Budyko-Sellers model and 'mixed layers' initial conditions for cloud formation) are more recent. Just because things are hard to imagine, or even simulate, doesn't mean they are impossible to approximate or describe holistically well enough to get meaningful results. If it was the case, nobody would ever bother with fluid mechanics or AC circuits.
 - Description of the total energy in the atmosphere vis-a-vis albedo. Part of my applied maths thesis btw.