Abstract
Local meteorological conditions exert a strong influence over day-to-day variations in air pollutant concentrations. Therefore, the meteorological fluctuations have to be removed in order for air quality planners and managers to examine underlying emissions-related trends and make better air quality management decisions for future. In this study, the meteorologically adjusted <TEX>$PM_{10}$</TEX> trends in Seoul are investigated over the period <TEX>$1999{\sim}2006$</TEX> using Kolmogorov-Zurbenco (KZ) filter. The result indicated that meteorologicaJ variability accounts for about 25% of <TEX>$PM_{10}$</TEX> variability. Both the meteorologically adjusted and unadjusted Jong-term daily <TEX>$PM_{10}$</TEX> concentrations had a significant downward trends and the difference between the meteorologically adjusted and unadjusted was small. So it was assumed that in long-term daily <TEX>$PM_{10}$</TEX> changes, localized changes in emissions is more important than the changes caused by meteorological conditions.
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More From: Journal of Korean Society for Atmospheric Environment
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