Title: Using a photochemical air quality model to evaluate emissions and simulate concentrations

Authors: C. Vongmahadlek, M. Zhang, B. Satayopas, T.B.T. Pham

Addresses: Joint Graduate School of Energy and Environment, 126 Pracha Uthit Road, Bang Mod, Bangkok 10140, Thailand. ' State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. ' Department of Civil Engineering, Chiang Mai University, Chiang Mai 50200, Thailand. ' Joint Graduate School of Energy and Environment, 126 Pracha Uthit Road, Bang Mod, Bangkok 10140, Thailand

Abstract: The air-quality modelling system was conducted to evaluate emissions inventory and simulate air concentration over Thailand. The coupling model of the Regional Atmospheric Modelling System (RAMS) and the models-3 Community Multi-scale Air Quality (CMAQ) was applied to simulate the concentration distributions of gaseous pollutants (i.e., NOx, SO2 and CO) over the Central and Eastern regions of Thailand. CMAQ was run for a summertime episode in a sub-grid scale. Simulated air concentrations were then compared with monitoring data. The evaluating results between modelling simulation and monitoring observation show a good agreement within a factor of 2.0 and relevant trend line, representing the acceptable level of emissions and concentration. This coupling model can be applied to support emission control strategies and clean air acts.

Keywords: CMAQ; community multi-scale air quality; RAMS; regional atmospheric modelling system; emissions inventory; sub-grid scale; modelling evaluation; Thailand; photochemical air quality models; modelling; simulation; air pollution; emission control; clean air; environmental pollution.

DOI: 10.1504/IJEP.2011.040279

International Journal of Environment and Pollution, 2011 Vol.45 No.4, pp.342 - 352

Available online: 23 May 2011 *

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