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Transboundary Air Pollution in Relation to Open Burning in Upper Southeast Asia |
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| รหัสดีโอไอ | |
| Creator | 1. Souninthone Choommanivong 2. Wan Wiriya 3. Somporn Chantara |
| Title | Transboundary Air Pollution in Relation to Open Burning in Upper Southeast Asia |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2562 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 12 |
| Journal No. | special |
| Page no. | 18-27 |
| Keyword | Fire Hotspot, Backward Trajectory, Air pollution, PM2.5, Open burning |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | This study aims to analyse fire hotspots using two NASAีs sensor systems; Moderate Resolution Imaging Spectroradiometer (MODIS), and Visible Infrared Imaging Radiometer Suite (VIIRS) and assess their impacts on air quality. Geographic information system (GIS) was used to create maps of fire hotspots and their density. The Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model was used to analyze 24- and 72-hour backward trajectory (BWT) of air mass movement to Chiang Mai city during February-April 2018 Two levels of air mass arriving were set at 10 m and 1,500 m above ground level (AGL). During the study period, directions of air mass movement were mostlyfrom western and south-western of the city. Burned areas obtained from both MODIS and VIIRS systems were significantly different (p < 0.05). Correlations between PM2.5 concentrations and Burned areas for both24-and 72 hour BWT obtained from VIIRS were better than those of MODIS at both levels (10 and 1,500 m AGL). Influence of local open burning on air pollution was observed from both systems but VIIRS provided slightly higher correlation with hotspot number than MODIS. Both systems provided similar results for transboundary air pollution (1,500 m AGL). |
