This study dates back four years, but I wasn't aware of it until it was posted by a friend today on Facebook:
A study from Texas A&M University reports that air pollution from Asia is making the Pacific region cloudier and stormier, disrupting winter weather patterns along the US West Coast and the Arctic. The study, led by Renyi Zheng, was reported in the Proceedings of the National Academy of Sciences (LA Times, 2007).
The Arctic has been freakishly warm this spring -- on any given day, Fairbanks, AK tends to be warmer than Bend, OR -- while Hawaii and the whole West Coast have been unusually wet and cool.
Oh well, guess it's just another way that the Chinese are fucking us over.