Column: Why the extreme weather? – USATODAY.com
...[Richard Alley] we're rolling the dice in a serious game where the "jackpot" means we lose...There's very high scientific confidence that our fossil-fuel burning and other activities, which add carbon dioxide to the air, are turning up the planet's thermostat. In a warmer world, we expect more record highs and heat waves but fewer record lows, just as we're observing. Warmer air can carry more water vapor, so a warmer rainstorm can deliver more inches per hour. Hair dryers have a "hot" setting for good reasons, and warmer air between rainstorms can dry out the ground faster.
Thus, we expect rising CO2 to bring more floods in some places and more droughts in others, with some places getting more of both. That might seem contradictory, but it's not.... Today's youngsters might live to see so much warming that the hottest summer now on record becomes commonplace or even cool in many places.
Penn State Live - Richard Alley
Richard Alley, Evan Pugh Professor of Geosciences, Penn State, is a recipient of a $100,000 Heinz Award for being a leader in climate and polar ice studies.
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