Short-Lived Climate Forcers - MARAMA

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Need Integrated Strategies to AddressClimate and Air Quality• Air pollution controls are already changing climate– Historically, emissions of SOx and NOx which formreflective aerosols have helped to cool the atmosphere,countering the effects of GHG– Recent SOx/NOx emissions reductions are now leading toan “unmasking” of the true effects of CO 2– Need to consider overall impacts of air pollution controlsto design “climate friendly” strategiesU.S. Environmental Protection Agency – Office of Air and Radiation6
Recent SLCF Activities• Convention on Long-Range Transboundary Air Pollution (C-LRTAP): Considering adding black carbon to the Gothenburg Protocoland promoting technical work on methane as an ozone precursor• United Nations Environment Program (UNEP) Black Carbonand Ozone Assessment– final June 2011• Black Carbon Report to Congress. Required by Oct. 2009 HouseInterior Appropriations bill. Peer review draft March 18, 2011• Arctic Council Task Force on Short Lived Climate Forcers–covers emissions/impacts/mitigation options for BC in Arctic. Final May2011• “Bounding BC” study from International Global AtmosphericChemistry (IGAC)/Stratospheric Processes and their Role in Climate(SPARC) projects– focus on reducing scientific uncertainties about BC.Summer 2011?U.S. Environmental Protection Agency – Office of Air and Radiation7
Page 1 and 2: Short-Lived Climate ForcersMid-Atla
Page 3 and 4: Comparison of Global Average Radiat
Page 5: Even aggressive CO 2 reductions, ma
Page 9 and 10: Attaining More Stringent Ozone NAAQ
Page 11 and 12: CH 4 is an O 3 Precursor• Address
Page 13 and 14: U.S. Methane Activities• Voluntar
Page 15 and 16: BLACK CARBON:IMPACTS AND MITIGATION
Page 17 and 18: Climate Impacts of BC• BC is most
Page 19 and 20: BC Impacts: GlaciersIn the Himalaya
Page 21 and 22: Global Sources of Black Carbon:(Lam
Page 23 and 24: Mitigation of Black Carbon• Locat
Page 25: Summary of Key Messages fromthis Pr

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