UW professor: Global Warming will happen, despite cold April - Seattle News - MyNorthwest.com

University of Washington Atmospheric Sciences Professor Cliff Mass talks about one of the coldest Aprils on record and then prepares the Puget Sound for a warming trend.
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"The fact that we haven't warmed up much doesn't mean anything. The warming is coming, but it's not going to be really significant until the second half of the century," Mass said.

The professor said the warming trend is "sort of exponential; it starts slowly and then revs up at the end."
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He said, "If you go to the conferences of my profession, if you talk to people who study climate and weather, 99 percent of them all believe this is extraordinarily serious."