Ken Caldeira:Why we need zero net emmissions of ghg's

Alex over at Radio Ecoshock passed this over to me, a facinating program by Ken Caledira of the Carnegie Institute speaking over at the amazing 3CR community radio out of Melbourne, Australia.

News climate science interview.

"And our simulations only went out about five hundred years, but at the end of five hundred years, you more or less have about as much warming as you had at the maximum warming after the CO2 emissions. And so this idea, that "Oh, this CO2 emission warms the Earth, and then in a century, or two centuries, it's mostly away" is really the wrong picture. More accurate is to say that each emission of CO2 produces a step, you know, increase in temperature that remains pretty much level for many centuries, and then decays away over many thousands of years."

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