WASHINGTON (February 18, 2013)--Scant recent snowfall in parts of the country and this month's massive Northeast blizzard are both potential signs of global warming, scientists say, and the reason lies in atmospheric physics.
Experts say the warmer atmosphere can hold, and dump, more moisture.
Two new studies find there are more big blizzards but less snow overall each year.
One study says the U.S. has been hit by twice as many extreme snowstorms in the past 50 years than in the previous 60.
Another study predicts annual global snowfall will shrink by more than a foot in the next 50 years.