Chemical transport model simulations of organic aerosol in southern California: model evaluation and gasoline and diesel source contributions.

ABSTRACT: Gasoline- and diesel-fueled engines are ubiquitous sources of air pollution in urban environments. They emit both primary particulate matter and precursor gases that react to form secondary particulate matter in the atmosphere. In this work, we updated the organic aerosol module and organic emissions inventory of a three-dimensional chemical transport model, the Community Multiscale Air Quality Model (CMAQ), using recent, experimentally derived inputs and parameterizations for mobile sources. The updated model included a revised volatile organic compound (VOC) speciation for mobile sources and secondary organic aerosol (SOA) formation from unspeciated intermediate volatility organic compounds (IVOCs). The updated model was used to simulate air quality in southern California during May and

SUBMITTER: Jathar SH 

PROVIDER: S-EPMC6070158 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature