Even if something like this happened a hundred years from now I don't think we would be sufficiently technologically advanced to try and control the weather, or alter it in a predictable manner. We would essentially have to sit back, try to keep warm, and decide if we really screwed ourselves or if it was a natural cycle that caused the climate change --- so we could try and avoid causing such an change in the future, if we were the cause. Either that or we all just learn to love the cold and the dust...