Rare winter tornadoes strike US Midwest, at least 3 killed
US News
Jan 8, 2008, 21:21 GMT
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JohnJan 9th, 2008 - 10:15:54
These 'rare' weather events will become more common, in line with global warming predictions -
Global warming may cause the temperature difference between the poles and the equator to decrease. and as the difference decreases, so should the number of storms, says George Tselioudis, a research scientist at NASA Goddard Institute for Space Studies (GISS) and Columbia University.
But even as a warming climate might decrease the overall number of storms that form, it could INCREASE THE NUMBER OF INTENSE storms. As temperatures continue to rise, more and more water vapor could evaporate into the atmosphere, and water vapor is the fuel for storms. “If we are creating an atmosphere more loaded with humidity, any storm that does develop has greater potential to develop into an intense storm,” says Tselioudis.
The combined result of increased temperatures over land, decreased equator-versus-pole temperature differences, and increased humidity could be increasingly intense cycles of droughts and floods as more of a region’s precipitation falls in a single large storm rather than a series of small ones.
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