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Identifying priority air pollution management areas during the burning season in Nan Province, Northern Thailand

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Abstract

In northern Thailand, biomass burning is a major source of high concentrations of particulate matter with a diameter < 10 μm (PM10) during the burning season (January to May), leading to health concerns related to air pollution. Given the limited staffing and budget available to local agencies, identifying priority areas for management and mitigation is important. We herein developed an empirical model using Landsat 8 imagery and PM10 data from ground stations to estimate PM10 concentrations in Nan Province, achieving an error of < 20% between the predicted and measured PM10 values. The satellite-derived values were then classified into five air quality levels based on criteria defined by the Thai Ministry of Natural Resources and Environment. These levels were correlated with land use/land cover maps and fire hotspots with high confidence (> 80%) acquired by the Terra and Aqua satellites from January to May 2015–2019. Fire hotspots and problematic PM10 concentrations were most often correlated with agricultural land, followed by disturbed forests and dense forests. These results enabled us to identify critical areas where repeat burning and high PM10 levels should by prioritized for mitigation, such as the upland agricultural and forest areas of Wiang Sa District. Our methodology could benefit air pollution management in other developing countries with similar limitations.

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Acknowledgements

This research was funded by the Faculty of Liberal Arts, Thammasat University, Thailand, grant number 3/2559. We are grateful for the data provided by the US Geological Survey (USGS); the Fire Information for Resource Management System (FIRMS), NASA; the Pollution Control Department and the Department of National Parks, Wildlife and Plant Conservation, Ministry of Natural Resources and Environment, and the Ministry of Interior, Thailand.

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Correspondence to Daroonwan Kamthonkiat.

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Kamthonkiat, D., Thanyapraneedkul, J., Nuengjumnong, N. et al. Identifying priority air pollution management areas during the burning season in Nan Province, Northern Thailand. Environ Dev Sustain 23, 5865–5884 (2021). https://doi.org/10.1007/s10668-020-00850-7

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  • DOI: https://doi.org/10.1007/s10668-020-00850-7

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