National Geographical Organization Scientific- Research Quarterly of Geographical Data (SEPEHR) 2588-3860 17 65 2008 04 20 Application of GIS in Order to Analyze the Air Quality in Taichung, Taiwan Application of GIS in Order to Analyze the Air Quality in Taichung, Taiwan 60 64 27614 FA Ali Akbar Rasuli Member of Faculty of Natural Geography, Tabriz University (Translator) Mas'ud Minaei Graduate Student in Remote Sensing and GIS, University of Tehran (Translator) Journal Article 2007 11 01 This paper presents an introduction of air pollution’s situation assessment in an urban area. The author uses the GIS, which combines the vehicle distribution model, pollutant release model, progress model and related data, in order to estimate the propagation and spatial distribution of traffic pollutants in the city of Taichung in Taiwan. This model can not only analyze the exact location of pollution, it can also predict emissions affected by changes in specific traffic conditions or strategic management. The results show that more CO emissions occur around areas located in the center or south of the city in Taichung, and the range of highway 1 suffer SOx, Nox and TSP pollutions more than rest of the city. Although the part of highway 1 within Taichung is not very long, it nevertheless plays a role in production of a significant portion of total suspended particulate (TSP), nitrogen oxides (NOx) and sulfur oxides (SOx) in this area. Moreover, the prediction of several hypothetical designs suggests that the main effect of advanced engines on reducing TSP emissions is more than 10%, while the average speed increase of urban road traffic may reduce CO by more than 14%. This paper presents an introduction of air pollution’s situation assessment in an urban area. The author uses the GIS, which combines the vehicle distribution model, pollutant release model, progress model and related data, in order to estimate the propagation and spatial distribution of traffic pollutants in the city of Taichung in Taiwan. This model can not only analyze the exact location of pollution, it can also predict emissions affected by changes in specific traffic conditions or strategic management. The results show that more CO emissions occur around areas located in the center or south of the city in Taichung, and the range of highway 1 suffer SOx, Nox and TSP pollutions more than rest of the city. Although the part of highway 1 within Taichung is not very long, it nevertheless plays a role in production of a significant portion of total suspended particulate (TSP), nitrogen oxides (NOx) and sulfur oxides (SOx) in this area. Moreover, the prediction of several hypothetical designs suggests that the main effect of advanced engines on reducing TSP emissions is more than 10%, while the average speed increase of urban road traffic may reduce CO by more than 14%. https://www.sepehr.org/article_27614_8b02ed5a86a1a326b7862bbba5eb74a7.pdf