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UN report projects that increasing use of HFCs likely to have a significant climate impact by 2050; equivalent to current total annual emissions from transport

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W m -2 relative to 2000. This increase may be as much as one-fifth to one-quarter of the expected increase in radiative forcing due to the buildup of CO 2 since 2000, according to the SRES emission scenarios. Climate and the Ozone Layer. Climate and the Ozone Layer: A UNEP Synthesis Report.

Climate 287
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Study finds rising temperatures increase risk of unhealthy ozone levels absent sharp cuts in precursors

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Warmer temperatures and other changes in the atmosphere related to a changing climate, including higher atmospheric levels of methane, spur the chemical reactions that lead to ozone. To examine the impacts of climate change on ozone pollution, NCAR scientist Gabriele Pfister and her colleagues looked at two scenarios.

Ozone 199
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Devil in the Details: World Leaders Scramble To Salvage and Shape Copenhagens UNFCCC Climate Summit

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“ One Agreement, Two Steps ” Expectations for Copenhagen quickly became complicated after Danish Prime Minister Lars Løkke Rasmussen boarded an overnight flight to Singapore to address an impromptu breakfast forum on climate change at the Asia Pacific Economic Co-operation (APEC) summit on 15 November. by Jack Rosebro.

Climate 236
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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%. —Leo Johnson, Partner, Sustainability and Climate Change, PwC. —Jonathan Grant, director, sustainability and climate change, PwC. a year from now to 2050.