Ol' Krauts a poltical pundit, and has no more credentials than I do for commenting on the validity of the present warming. However, his opposition to any kind of relief for the farmers in California strikes me as stupid in the extreme. Were they part of the military-industrial complex, he would be campaigning for more money for them.
As for predicting exactly what will happen where, we are hardly there yet in our models. However, for general predictions, the scientists studying affects of GHGs have gotten it pretty well correct. Dr. Hansen in 1981 predicted that the Northwest Passage would be open several times by this time, and he was completely correct. The denialists called him an alarmist, and said nothing of the sort would happen, and it was going to start cooling in any case.
Dr. Francis in her address to the Meteorological Society of America stated that because of the decreasing delta of the temperatures between the polar regions and the temperate regions, the Rossby Waves would be moving slower, and extending further North and South, resulting in temperatures extremes, and very fast temperature changes. This winter has been a very good example of exactly what she was talking about.
These are real scientists, not political whores like Krauthammer.