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
Using a photochemical air quality model to evaluate emissions and simulate concentrations
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
2and 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.