| Author | Nilpatra Wongpen |
| Call Number | AIT Thesis no.EV-05-20 |
| Note | A thesis submitted in partial fulfillment of the requirements for the
degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The aims of this study is to assess effects of temperature change on emission rates of photochemical smog precursors in Bangkok metropolitan region (BMR) and use a model to simulate the change in photochemical air pollution associated with the hypothesized temperature change. A photochemical smog model system, UAM-V/MM5, was used and the domain covers 88 km x 72 km from (615,1488) to (703,1560) UTM with the resolution of 4 km x 4 km. Emission data base in 2000 was obtained form Pollution Control Department and the biogenic emissions was determined based on the land use pattern, were used as the base case emission. Due to lack of detail of VOC emission profiles for major sources in Bangkok, the well developed VOC emission profile from Europe was used. The selected episode was on 28-29 January 2004. Two days prior the episodes were simulated to minimize the effects of initial conditions assumption. Boundary conditions were determined form observed value at the monitoring stations which were near the border of the domain. Three statistical measures (mean normalized bias error (MNBE)), Mean normalized gross error (MNGE) and unpaired peak prediction accuracy (UPA)), which are recommended by USEPA, were used which shows satisfactory model system performance for January episode. 1 Two scenario simulations were conducted, scenario case 1 is simulated by using the scenario emissions and the base case meteorology of the episode. Scenario cases 2 is simulated using the same emissions but with an increase in temperature by 1C from th episode meteorology. The peak O3 from the scenario cases were found to be lower than that from the base case, while there was no difference between the case 1 and case 2. The reduction of O3 from base case may come from higher NOx increase rate over VOC, which would reduce O3 in BMR. |
| 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;Nowarat Coowanitwong Aramaki, Toshiya; |
| Scholarship Donor(s) | Royal Thai Govenm1ent Fellowship ; |
| Degree | Thesis (M.Eng.) -- Asian Institute of Technology, 2005 |