Land Surface Temperature and Transboundary Air pollution in Bangkok Metropolitan Region
Tanni Sarker, Michigan State University, sarkerta@msu.edu (Presenter)
In the context of a rapidly urbanizing world, heavy air pollution and increasing surface temperature pose significant threats to human health and lives, especially in densely populated cities, including the Bangkok Metropolitan Area (BMA). In this study, we used the information theory perspective to investigate the causal relationship between diurnal land surface temperature (LST) and transboundary air pollution (TAP) during 2003-2020 in Bangkok and adjacent provinces. The increasing trend of LST over the studied region was obvious, although the average daytime LST is rising faster than nighttime LST. Evident seasonal variations showed high aerosol optical depth (AOD) loadings during the dry period and low at the beginning of the rainy season. The causality tests show that air pollutants of Nakhon Pathum and Samut Sakhon have a greater capacity to influence the LST of Bangkok metropolis than other provinces. Also, the bidirectional relationship indicates that air pollution has a greater impact on daytime LST than at night. Though LST has an insignificant influence on AOD during the daytime, LST influences AOD significantly at night. Taken together, these results contribute by providing strong evidence of TAP in modulating diurnal LST over the Bangkok metropolis.
Associated Project(s):
Poster Location ID: 2-7
Presentation Type: Poster
Session: Poster Session 2
Session Date: Wed (May 10) 5:15-7:15 PM
CCE Program: LCLUC