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標題: 軌跡模式模擬原生污染物、硫酸鹽、硝酸鹽之濃度
作者: 潘榮長
關鍵字: trajectory model;軌跡模式;PM10;sulfate;nitrate;circuit model;懸浮微粒;硫酸鹽;硝酸鹽;電路模式
出版社: 環境工程學系

Trajectories are often used to describe the long-range transport of air pollutants in the atmosphere. NCHU trajectory model with the base of backward trajectory scheme and Tsuang and Chao's circuit model coupled meteorology and pollutant emission data is applied to simulate the pollutant concentration of receptor grid. Chung-Ming air quality monitoring station, located at the center of Taichuang city, is chosen as the receptor point. The simulation is conducted for whole year in 1997 and compare with the observed data. Each trajectory is traced 24hr back in time. The correction coefficient(R) for PM10, SO2, and NOx are 0.47, 0.18, and 0.41, respectively. We find the simulation in winter is better than else. When the trajectory across large emission source, extremely high concentration will appear, for the point sources are supposed to emit from surface instead of stack height. Furthermore, sulfate and nitrate are simulated in this model. The concentration coefficient of sulfate is above 0.44 and nitrate is above 0.71.
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