Investigation of air pollution dispersion from kiln stacks based on seasonal using multi-model integration (WRF/CALPUFF) A Pratama*
*Science Atmosphere and Planetary Department, Institut Teknologi Sumatera, Lampung Selatan, Indonesia
Abstract
Air pollution is one of the environmental problems that cause a bad impact on human life. The sources of air pollution come from various sources such as industry, mining, transportation, etc. This study aims to identify the seasonal dispersion of Sulfure Dioxide produced by kiln stacks in PT. Semen Padang, Tbk. The dispersion model used in this study is CALPUFF (For air pollution) integrated with WRF (Weather Research Forecasting) (For meteorological). CALPUFF requires the wind field generated by the CALMET model and the WRF. From the simulation, the direction of SO2 dispersion on the wet season and the dry season is influenced by meteorological phenomena such as sea breeze and land breeze. The dispersion of SO2 on the dry season passes the urban area more than on the wet season with the highest concentration is 122 ug/m3. On the other hand, on the wet season, the highest concentration is 120 ug/m3. These results are below of the national quality standard in Indonesia (365 ug/m3). The statistic also shows that the correlation and error (RMSE) between the model and the observed data are 0.63 and 5.49 on the wet season, whereas on the dry season are 0.74 and 2.89.
Keywords: Air Pollution, CALMET, CALPUFF, WRF, Seasonal
