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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. “We ºF) above pre-industrial temperatures. C, is warranted.”.

Climate Change 218
Climate Change Tuvalu Climate BBC 218
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Climate Talks End In Copenhagen Accord; Countries Settle On Non- Binding 2 ºC Warming Limit

Green Car Congress

DECEMBER 20, 2009

The formal acknowledgement of the Copenhagen Accord ended a particularly contentious and chaotic set of negotiations, ostensibly capping more than a decade of deliberations towards a framework to reduce global greenhouse gas emissions beyond the terms of the Kyoto Protocol, which expires in 2012.

Climate 236
Climate Climate Change Tuvalu Obama 236
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