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Climate change: Limiting short-lived pollutants cannot buy time on CO2 mitigation
http://www.iiasa.ac.at/web/home/about/news/20141103-PNAS-SLCF.html[font face=Serif]03 November 2014
[font size=5]Climate change: Limiting short-lived pollutants cannot buy time on CO[font size="1"]2[/font] mitigation[/font]
[font size=4]Targeting emissions of non-CO[font size="1"]2[/font] gases and air pollutants with climate effects might produce smaller benefits for long-term climate change than previously estimated, according to a new integrated study of the potential of air pollution and carbon dioxide mitigation.[/font]
[font size=3]High hopes have been placed on limiting emissions of so-called short-lived climate forcers (SLCF) such as methane and soot for protecting human health, vegetation and limiting temperature increase.
These emissions originate from a broad variety of sources, including diesel engines, stoves, cows, and coal mines. They stay in the atmosphere from days to a decade while CO[font size="1"]2[/font] lasts thousands of years.
New research indicates that neglecting linkages between the sources of these SLCFs and CO[font size="1"]2[/font] has led to an overestimation of the long-term climate benefits of controlling these pollutants in climate stabilization scenarios, according to a new study published in the journal Proceedings of the National Academy of Sciences (PNAS).
“Stabilizing climate at any temperature means that, at some point, global CO[font size="1"]2[/font] emissions have to become zero,” says IIASA researcher Joeri Rogelj, who led the study. “Although near-term action on short-lived climate forcers can help reduce warming in the coming decades and also provides other societal benefits, such as cleaner air, it will not buy us time for delaying the reductions in carbon dioxide emissions which are required to stabilize the climate at safe levels.”
…[/font][/font]
http://www.pnas.org/content/early/2014/10/29/1415631111.abstract[font size=5]Climate change: Limiting short-lived pollutants cannot buy time on CO[font size="1"]2[/font] mitigation[/font]
[font size=4]Targeting emissions of non-CO[font size="1"]2[/font] gases and air pollutants with climate effects might produce smaller benefits for long-term climate change than previously estimated, according to a new integrated study of the potential of air pollution and carbon dioxide mitigation.[/font]
[font size=3]High hopes have been placed on limiting emissions of so-called short-lived climate forcers (SLCF) such as methane and soot for protecting human health, vegetation and limiting temperature increase.
These emissions originate from a broad variety of sources, including diesel engines, stoves, cows, and coal mines. They stay in the atmosphere from days to a decade while CO[font size="1"]2[/font] lasts thousands of years.
New research indicates that neglecting linkages between the sources of these SLCFs and CO[font size="1"]2[/font] has led to an overestimation of the long-term climate benefits of controlling these pollutants in climate stabilization scenarios, according to a new study published in the journal Proceedings of the National Academy of Sciences (PNAS).
“Stabilizing climate at any temperature means that, at some point, global CO[font size="1"]2[/font] emissions have to become zero,” says IIASA researcher Joeri Rogelj, who led the study. “Although near-term action on short-lived climate forcers can help reduce warming in the coming decades and also provides other societal benefits, such as cleaner air, it will not buy us time for delaying the reductions in carbon dioxide emissions which are required to stabilize the climate at safe levels.”
…[/font][/font]
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