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자료유형
학술저널
저자정보
정정훈 (전남대학교) 박승식 (전남대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제26권 제4호
발행연도
2010.8
수록면
392 - 402 (11page)

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Black carbon (BC) concentrations were measured with an aethalometer (AE-16, 880 nm) at time interval of 5-min at an urban site of Gwangju over a year 2008. 24-hr filter-based integrated measurements of PM<SUB>2.5</SUB> particles were also made at the same site during the winter and summer intensive periods to test any optical loading bias in the raw BC data measured by aethalometer. BC concentration was higher in winter than in summer, possibly due to increase in emissions from energy consumption and poor dispersion with reduction of boundary layer in winter. Also temporal cycles of BC indicate that short-term transient spikes were common, occurring primarily during the rush-hour periods. A similar feature was also observed in diurnal concentration cycle of CO, mainly emitted from motor vehicles. When both low wind speed and weather patterns such as mist, haze and etc were combined, high BC concentrations frequently occurred. The amount of optical loading effect described by the “k” factor showed the seasonal variation, ranging from 0.0003 to 0.0036. This implies that optical loading effect is not seen at all times. From the comparison between the filter-based elemental carbon (EC) and aethalometer BC data, it was found that the loading compensated BC values were more reasonable than the raw BC ones reported from the aethalometer.

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Abstract
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2. 연구방법
3. 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2012-539-003670870