Analysis of the National Air Pollutant Emissions Inventory (CAPSS 2017) Data and Assessment of Emissions based on Air Quality Modeling in the Republic of Korea

Abstract

When a vehicle travels an unpaved road, the force of the wheels on the road surface causes pulverization of surface material. Particles are lifted and dropped from the rolling wheels, and the road surface is exposed to strong air currents in turbulent shear with the surface. The turbulent wake behind the vehicle continues to act on the road surface after the vehicle has passed.The particulate emission factors presented in the previous draft version of this section of AP-42, dated October 2001, implicitly included the emissions from vehicles in the form of exhaust, brake wear, and tire wear as well as resuspended road surface material 25 . EPA included these sources in the emission factor equation for unpaved public roads (equation 1b in this section) since the field testing data used to develop the equation included both the direct emissions from vehicles and emissions from resuspension of road dust.

Development of Surface Observation-Based Two-Step Emissions Adjustment and its Application on Co, Nox, and So2 Emissions in China and South Korea

“…In CAPSS 2017, the emissions of CO, SO x , and NO x of South Korea were 0.8 Tg/year, 0.3 Tg/year, and 1.2 Tg/year, respectively (Choi et al, 2021). In South Korea, the three main sources of CO emissions include road, non-road mobile, and biomass burning, accounting for 78 % of the total emissions.…”