Assessment of PM10 Emission Sources for Priority Regulation in Urban Air Quality Management Using a New Coupled MM5-CAMx-PSAT Modeling Approach

Abstract In this study, a new method was proposed to systematically identify the local PM10 emission sources for priority regulation in urban air quality management through a coupled MM5-CAMx-PSAT modeling system. Parameters of emission source contribution ratio (ESCR) and normalized local ESCR were introduced to reflect the source contribution in terms of its total emission amount and per unit emission amount, and were used for identifying the emission sources for priority regulation. The proposed method was then applied to a case study in Beijing, China. Three scenarios were examined, including (a) analysis of only seven PM10 emission source categories for the entire Beijing; (b) analysis of just 13 emission districts in Beijing; and (c) comprehensive analysis of seven emission source categories in each emission district. The following emissions were identified for priority regulation: (a) stationary emissions from the urban center of Beijing and Fengtai districts; (b) industrial fugitive emissions from...