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Devil In The Details: Is Copenhagens 2 ºC Guardrail Obsolete?

Green Car Congress

DECEMBER 16, 2009

A maximum concentration of 450 ppm carbon dioxide (~550 ppm CO 2 equivalent) in the Earth’s atmosphere is commonly cited as the limit at which average temperatures can be held at 2 ºC, and many emissions reduction proposals are based upon these two “upper bounds” targets. ºF) above pre-industrial temperatures.

Climate Change 218
Climate Change Tuvalu Climate BBC 218
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Devil in the Details: World Leaders Scramble To Salvage and Shape Copenhagens UNFCCC Climate Summit

Green Car Congress

NOVEMBER 29, 2009

9 ] In addition, the complex, deliberate, and lengthy publishing cycle of the IPCC’s Assessment Reports—which have so far been produced in 1990, 1995, 2001, and 2007—has not kept pace with the abrupt acceleration of many key indicators of climate change.

Climate 236
Climate Climate Change 2009 Emissions 236
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