A Dispersion Modeling Study of Major VOCs from Non‐Point Emission Sources in the Urban Atmosphere

摘要: To assist with the understanding and solving of toxic air pollutant problems in urban areas, an atmospheric dispersion model, SKYDM, was developed three preprocessors (meteorology, emission, topography), a physical process chemical decay term based on NO x -O 3 -RH photochemistry actual atmosphere. SKYDM can work multicomponents single model run, as well compound run produces 2D meteorological field results due to integration approach. The present study aims develop evaluate at local spatial scales, short term. A comparative is conducted estimate effects parameters defining applicability limits models examine approach methodology. All simulations are for volatile organic compounds (VOCs) such BTXS (Benzene, Toluene, Xylene, Styrene) emitted from non-point sources, located 151 villages seven divisions, northeastern portion Seoul, Korea, eight different data sets during 2002. Modeled toluene concentrations compared those observed ten monitoring sites. main findings follows: (a) Model uncertainties obviously caused by limitations conditions emission topographical information, removal processes, user errors or application skills - comparatively significant parameter pollutants, (b) indicated correlation between observations (c) showed potential useful tool assessing quality areas. In further work, will be upgraded improving algorithm fully detailed input evaluated comparison other Gaussian models.