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Study possibility of long-range transport of Asian dust to Thailand using modeling and satellite data | |
Author | Thinawat Sathavarodom |
Call Number | AIT Thesis no.EV-05-29 |
Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
Publisher | Asian Institute of Technology |
Abstract | This study assessed on the possibility of Asian Dust reaching Thailand using ambient air monitoring data (PM10 and SO2), the 10-day backward air mass trajectory from HYSPLIT4 model, MODIS satellite data during November 2001 and April 2002. The selected days were in November 2001 and January 2002. All the days during the period were screened for the possible dates of the dust events using the monitoring data and the HYSPLIT4 model. The MODIS images were processed using YDI for 21, 23 November 2001 and 8, 10 January 2002 which showed no yellow dust sign occurred in Thailand. However, some indicators of sandy dust were seen in Prey Veng and Takeo provinces of Cambodia. It was further shown that those were indicators of the local sandy dust rather than the long-range transported Asian dust. Forward trajectories were analyzed for a minor sand storm occurred over China on 1 and 2 January 2002, which show that the air mass from China was not transported to Thailand or other Southeast Asia countries during those days. The high concentrations of PM10 and SO2 of ambient air monitoring stations in various provinces of Thailand were possibly caused by local emission, stable atmosphere during the dry season, and perhaps long-range transported pollutants from other origins rather than the Asian dust. |
Year | 2005 |
Type | Thesis |
School | School of Environment, Resources, and Development (SERD) |
Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
Academic Program/FoS | Environmental Engineering and Management (EV) |
Chairperson(s) | Nguyen Thi Kim Oanh; |
Examination Committee(s) | Shim, Shang Gyoo;Phonekeo, Vivarad ; |
Scholarship Donor(s) | Royal Thai Government Fellowships ; |
Degree | Thesis (M. Eng.) -- Asian Institute of Technology, 2005 |