Articles | Volume 16, issue 3
Atmos. Chem. Phys., 16, 1603–1618, 2016
https://doi.org/10.5194/acp-16-1603-2016
Atmos. Chem. Phys., 16, 1603–1618, 2016
https://doi.org/10.5194/acp-16-1603-2016
Research article
11 Feb 2016
Research article | 11 Feb 2016

Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO2 emission controls

E. A. Marais et al.

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Short summary
Isoprene secondary organic aerosol (SOA) is a dominant aerosol component in the southeast US, but models routinely underestimate isoprene SOA with traditional schemes based on chamber studies operated under conditions not representative of isoprene-emitting forests. We develop a new irreversible uptake mechanism to reproduce isoprene SOA yields (3.3 %) and composition, and find a factor of 2 co-benefit of SO2 emission controls on reducing sulfate and organic aerosol in the southeast US.
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