Shantanu H. Jathar

TL;DR: It is shown that human exposure to carbonaceous aerosols of fossil origin is transitioning away from transportation-related sources and toward VCPs, and the focus of efforts to mitigate ozone formation and toxic chemical burdens need to be adjusted.

TL;DR: It is experimentally demonstrated that vapor losses can lead to substantially underestimated SOA formation, by factors as much as 4.5%, which leads to underestimates of SOA in air-quality and climate models, especially in urban areas where anthropogenic SOA precursors dominate.

TL;DR: In this article, the current status of global modeling of the organic aerosol (OA) in the troposphere and analyzes the differences between models as well as between models and observations.

TL;DR: Evidence, research needs, and discrepancies between top-down and bottom-up approaches used to estimate SOA from motor vehicles are summarized, focusing on inconsistencies between molecular-level understanding and regional observations.

TL;DR: In this article, source-specific SOA yield parameterizations for these unspeciated emissions were presented for implementation in chemical transport models, and box model calculations using these new parameterizations predict that NMOG emissions from the top six combustion sources form 0.7 Tg y−1 of first generation SOA in the United States, almost 90% of which is from biomass burning and gasoline vehicles.