Evaluating the Emissions and Chemistry of Understudied VOC Sources Using Observations from the AEROMMA Aircraft Campaign and Other Field Studies (Invited Presentation)

Oxygenated volatile organic compounds (oVOCs) emitted from non-vehicular sources, such as volatile chemical products (VCPs) and cooking, are important contributors to the total anthropogenic VOCs observed in urban regions. Models typically underrepresent oVOC emissions compared to observations, and the chemical reactions that describe oVOC oxidation are often missing or misrepresented in chemical mechanisms. Here, we present multi-year efforts to update models to better reflect the emissions and chemistry of oVOC sources. We leverage measurements from multiple ground campaigns to update emissions inventories, then use models with updated oVOC chemistry to understand how these emissions react in the atmosphere. We demonstrate how we are using these models to better understand the detailed chemical measurements conducted in urban areas during the 2023 AEROMMA aircraft campaign, and we discuss what implications these updates may have on model simulations of ozone production in megacities like Los Angeles, CA.