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Study finds rising temperatures increase risk of unhealthy ozone levels absent sharp cuts in precursors

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These gases come from human activities such as combustion of coal and oil as well as natural sources such as emissions from plants. In addition to NCAR, the study co-authors are from the Pacific Northwest National Laboratory; University of Colorado, Boulder; and North-West University in South Africa. Pfister, G. Walters, J.-F.

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PwC analysis finds meeting 2 C warming target would require “unprecedented and sustained” reductions over four decades

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Since 2000, the global rate of decarbonization has averaged 0.8%; from 2010 to 2011, global carbon intensity fell by just 0.7%. Other G20 (Australia, Korea, EU, South Africa, Saudi Arabia, Argentina). Because of this slow start, global carbon intensity now needs to be cut by an average of 5.1% a year from now to 2050.

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

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Jacobson first showed in 2000 that black carbon was the second-leading cause of global warming after carbon dioxide in terms of radiative forcing and, in 2002, that its control would be the most effective method of slowing warming. ºC in 2050, as compared to 2000 temperatures. ºC in 2020, and 2.3 “It has implications for us.

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