Geoengineering: Our Last Hope, or a False Promise?

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5. Got a better idea?

Love to hear it!

http://www.yaleclimatemediaforum.org/2012/12/forget-about-that-2-degree-future/

[font face=Serif][font size=5]Forget About That 2-Degree Future[/font]

Bruce Lieberman — December 5, 2012

[font size=3]The opportunity to limit the rise in average global temperatures this century to 2 degrees Celsius above pre-Industrial levels — corresponding to a CO[font size=1]₂[/font] atmospheric concentration of 450 ppm — has pretty much slipped away, says climate scientist Robert Watson.

SAN FRANCISCO, CA, Dec. 5, 2012 — Renowned British climate scientist Sir Robert Watson pulled few punches today during a talk about the warmer world humans will face in coming decades.

Watson, who was IPCC chair from 1997 to 2002, all but dismissed the possibility of keeping the rise in average global temperatures to 2 degrees Celsius above pre-industrial levels — a temperature rise that corresponds to an atmospheric concentration of CO[font size=1]₂[/font] of 450 parts per million. It now stands at about 390 ppm.

“Fundamentally, we are not on a path toward a 2 degree world,” Watson told a packed hall at Moscone Center for a talk entitled: “A World Where the Atmospheric Concentration of Carbon Dioxide Exceeds 450 ppm.”

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