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The Assessment of Air Quality Monitoring Network Considering the Change of Various Environmental Factors in Busan  

Yoo Eun-Chul (Busan Metropolititan City institute of Health & Environments)
Park Ok-Hyun (Department of Environmental Engineering, Busan National University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.22, no.4, 2006 , pp. 405-420 More about this Journal
Abstract
This study was conducted to understand the change of spatial environmental factors including populations, air pollution source and land-use in Busan, during the period of 1995 and 2004. Firstly, the grids (5 km $\times$ 5 km) were divided using the TM coordinates of Busan and the statistical data of populations and land-use were marked on each grid during studying period. Secondly, the SO$_2$, NO$_2$ and O$_3$ concentrations of areas where air quality monitoring station was not established were estimated on the basis of these air pollutants measured at close air quality monitoring station by kriging method. In order to understand spatial change of air pollution and to investigate duplication and reduction of existing stations, semivariogram, correlation and cluster analysis were carried out. This study showed that the population increased in 2004 only on 8 grids compared to in 1995. The spatial change of SO$_2$, NO$_2$ and O$_3$ was investigated by semivariogram in Busan area. As the results of semivariogram, the spatial change of 502 become smaller and simpler, while that of NO2,03 become larger and more complex in 2004 than in 1995, According to the result of correlation and cluster analysis, the reduction of measurement item or the relocation of air quality monitoring station can be needed in the high dense grid area.
Keywords
Air quality monitoring network; Spatial change; Semivariogram; Relocation;
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