Impact of Solvent Emissions on Reactive Aromatics and Ozone in the Great Lakes Region

While transportation emissions have declined over the past several decades, volatile organic compound (VOC) from solvent use applications increased as urban areas expand. In this work, Canadian air quality model (GEM-MACH-TEB) is used to assess importance of during Michigan Ontario Ozone Source Experiment (MOOSE). Model predictions are compared ozone and total mono-substituted aromatics (TOLU) observations collected in Windsor, Ontario. For summer 2018, estimates TOLU smaller (30% for an 8 h daytime average) Windsor than positive matrix factorization (44% a 24 average). The updated U.S. EPA’s VCPy (Volatile Chemical Product framework) 2021 simulations increases source contribution Detroit/Windsor (30–50% This also provides more uniform spatial distribution across U.S./Canada border Long-chain alkanes dominant speciation model’s pollutant emission inventory observation-derived factor. Summertime decreased by 0.4% 10% VOC reduction scenario. A mobile NOx scenario resulted 0.6% O3 decrease widespread changes study region.