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Politics : Rat's Nest - Chronicles of Collapse

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To: Wharf Rat who wrote (5826)	4/25/2007 9:46:47 AM
From: Wharf Rat	Read Replies (1) of 24225

Implications of “peak oil” for atmospheric CO2 and climate by P. A. Kharecha and J. E. Hansen 1P. A. Kharecha and J. E. Hansen NASA Goddard Institute for Space Studies and Columbia University Earth Institute 2880 Broadway, New York, NY 10025 Abstract Peaking of global oil production may have a large effect on future atmospheric CO2 amount and climate change, depending upon choices made for subsequent energy sources. We suggest that, if estimates of oil and gas reserves by the Energy Information Administration are realistic, it is feasible to keep atmospheric CO2 from exceeding approximately 450 ppm, provided that future exploitation of the vast reservoirs of coal and unconventional fossil fuels incorporates carbon capture and sequestration. Existing coal-fired power plants, without sequestration, must be phased out before mid-century to achieve this limit on atmospheric CO2. We also suggest that it is important to “stretch” oil reserves via energy efficiency, thus avoiding the need to extract liquid fuels from coal or unconventional fossil fuels. We argue that a rising price on carbon emissions is probably needed to keep CO2 beneath the 450 ppm ceiling. energybulletin.net

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