Magnitude and evolution of brown carbon emissions from biomass burning
Abstract
The net radiative impact of aerosol emissions from wildfires remains a significant uncertainty in regional and global climate models. One important source of uncertainty is aerosol radiative properties. During the WE-CAN field campaign in 2018 aerosol absorption, scattering, extinction and volatility were measured in emissions from a wide-range of wildfires burning a variety of fuels at different combustion efficiencies in the Western United States. Emission factors for brown carbon from this wide range of fires will be presented. I will also discuss the impact of photochemical aging, photolysis, and dilution on brown carbon and on total aerosol absorption. Finally, results from chamber studies conducted based on conditions observed during the WE-CAN field project will be presented.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A23L2954M
- Keywords:
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- 0305 Aerosols and particles;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0322 Constituent sources and sinks;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE