“Global warming does increase the intensity of droughts and heat waves, and thus the area of forest fires,” Hansen wrote. “However, because the warmer atmosphere holds more water vapor, global warming must also increase the intensity of the other extreme of the hydrologic cycle — meaning heavier rains, more extreme floods, and more intense storms driven by latent heat, including thunderstorms, tornadoes, and tropical storms.”
Real Science 
“Global warming does increase the intensity of droughts and heat waves, and thus the area of forest fires,” Hansen wrote. “However, because the warmer atmosphere holds more water vapor, global warming must also increase the intensity of the other extreme of the hydrologic cycle — meaning heavier rains, more extreme floods, and more intense storms driven by latent heat, including thunderstorms, tornadoes, and tropical storms.”
http://www.rawstory.com/rs/2013/06/05/bill-nye-heat-energy-caused-2-6-mile-wide-tornado-in-oklahoma/
Hansen predicts more forest fires, hurricanes, and tornadoes. We actually get less and fewer. Why are people still listening to these idiots?
But then they can’t measure absolute total solar irradiance (TSI) values with a reasonable degree of accuracy. So how could such predictions be made?
http://tallbloke.wordpress.com/2013/06/18/nist-and-tsi-unknown-systematic-bias-2/
And Northern Australia is having the wettest “Dry Season” on record.
http://www.abc.net.au/news/2013-06-25/record-rain-falls-in-karratha-in-the-pilbara/4777706?section=wa