Quantifying the contributions of local emissions and regional transport to elemental carbon in Thailand

Environmental Pollution
Li XingSaran Poshyachinda

Abstract

We used the Weather Research and Forecasting Model coupled with Chemistry (WRF-Chem) to simulate elemental carbon (EC) concentrations in Thailand in 2017. The goals were to quantify the respective contributions of local emissions and regional transport outside Thailand to EC pollution in Thailand, and to identify the most effective emission control strategy for decreasing EC pollution. The simulated EC concentrations in Chiang Mai, Bangkok, and Phuket were comparable with the observation data. The correlation coefficient between the simulated and observed EC concentrations was 0.84, providing a good basis for evaluating EC sources in Thailand. The simulated mean EC concentration over the whole country was the highest (1.38 μg m-3) in spring, and the lowest (0.51 μg m-3) in summer. We conducted several sensitivity simulations to evaluate EC sources. Local emissions (including anthropogenic and biomass burning emissions) and regional transport outside Thailand contributed 81.2% and 18.8% to the annual mean EC concentrations, respectively, indicating that local sources played the dominant role for EC pollution in Thailand. Among the local sources, anthropogenic emissions (including the industry, power plant, residential, and trans...Continue Reading

References

Aug 4, 2009·Journal of the Air & Waste Management Association·Chatchawan VongmahadlekNarisara Thongboonchoo
Jun 24, 2015·The Science of the Total Environment·Siwatt PongpiachanJunji Cao
Mar 31, 2018·The Science of the Total Environment·Shantanu Kumar PaniSerm Janjai

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Citations

Aug 13, 2021·Environmental Monitoring and Assessment·Hiep Nguyen DucNgo Xuan Quang

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