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자료유형
학술저널
저자정보
저널정보
한국기상학회 Asia-Pacific Journal of Atmospheric Sciences 한국기상학회지 제40권 제1호
발행연도
2004.2
수록면
61 - 70 (10page)

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We analyzed hourly integrated measurements of SO₂ concentrations obtained from a rural monitoring site located in Chongwon, Korea to investigate the characteristics of temporal variations during the period from 1994 to 2001. The annual, seasonal, and diurnal variations of observed SO₂ concentrations are discussed and the characteristics of rural concentration variations are addressed associated with the effects of meteorological variables such as wind speed, wind directions and temperature. The results indicate that the annual variation of mean SO₂ concentrations show a significantly decreasing trend and the amplitude of monthly variations are also found to decrease with time. The diurnal variations of SO₂ concentrations show maximum in the morning around at 0800-1000 LST and secondary maximum at around 1900-2100 LST, but the amplitude of diurnal variation of SO₂ concentration has decreased. Although the urban and industrial cities such as Chongju are located in the eastern part of Khangnae, Chongwon, the analyzed result in association with wind directions shows that relatively lower SO₂ concentrations are found in the directions of ENE rather than WSW cases. This is implying the importance of topography located in south-north direction over the eastern Chongwon area where a blocking of air pollutants from the eastern emission area plays a certain role on the characteristics of SO₂ levels in Chongwon. On the other hand the SO₂ concentrations from the WSW-W area (i.e., Daejun and Chochiwon) are found to be relatively higher than from other directions due to more effective medium and large scale transport of pollutions from upstream regions.

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Abstract
1. 서론
2. 관측 및 분석 방법
3. 결과 및 논의
4. 결론
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