Inderscience Publishers

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

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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., NO
x
, SO
2
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

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