지상 대기질 측정 자료를 이용한 서울 지역 2차 미세먼지 생성량 및 그 일변화 추정 (Estimation of Secondary PM10 Concentrations and Their Diurnal Variations Using Air Quality Monitoring Data in Seoul)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 24권 / 4호 / 393 ~ 403페이지
· 저자명 : 김지아, 진형아, 김철희

초록

In an effort to estimate secondary PM10 concentrations and their diurnal variations at different photochemical activities, PM10, CO, and O₃concentrations obtained from the ambient air quality network located in Seoul are analyzed for the period from 2000 to 2005. In order to classify the photochemical activities on a daily basis, measured ΔO₃, max-min (maximum O₃-minimum O₃) and∫(hv)dt which represents accumulated daily insolation, were used to classify each day into three regimes: 1) low photochemical reactivity; ΔO₃, max-min‹40 ppb, and∫(hv)dt ‹4000 W/m², 2) moderate photochemical reactivity; 40 ppb⁄ΔO₃, max-min‹60 ppb, and 4000‹∫(hv)dt‹6000W
/m², and 3) high photochemical reactivity; ΔO₃, max-min¤60 ppb, and∫(hv)dt›6000 W/m². The ratio of (PM10/CO) obtained at low photochemical activity regime was used as an index of tracer for the estimation of secondary
PM10 at higher photochemical activity regimes. The results show that the estimated secondary PM10 concentrations for moderate and high photochemical regimes are found to be 18.8% (10.9 μg/m³), and 35.0% (26.2 μg/m³), respectively. Diurnal variation of secondary PM10 for the moderate photochemical regime shows weak but noticeable patterns. However, the highly activated photochemical regime shows strong diurnal variations of secondary PM10 concentrations with the maximum value of 35.1 μg/m³ at 1300LST.

영어초록

In an effort to estimate secondary PM10 concentrations and their diurnal variations at different photochemical activities, PM10, CO, and O₃concentrations obtained from the ambient air quality network located in Seoul are analyzed for the period from 2000 to 2005. In order to classify the photochemical activities on a daily basis, measured ΔO₃, max-min (maximum O₃-minimum O₃) and∫(hv)dt which represents accumulated daily insolation, were used to classify each day into three regimes: 1) low photochemical reactivity; ΔO₃, max-min‹40 ppb, and∫(hv)dt ‹4000 W/m², 2) moderate photochemical reactivity; 40 ppb⁄ΔO₃, max-min‹60 ppb, and 4000‹∫(hv)dt‹6000W
/m², and 3) high photochemical reactivity; ΔO₃, max-min¤60 ppb, and∫(hv)dt›6000 W/m². The ratio of (PM10/CO) obtained at low photochemical activity regime was used as an index of tracer for the estimation of secondary
PM10 at higher photochemical activity regimes. The results show that the estimated secondary PM10 concentrations for moderate and high photochemical regimes are found to be 18.8% (10.9 μg/m³), and 35.0% (26.2 μg/m³), respectively. Diurnal variation of secondary PM10 for the moderate photochemical regime shows weak but noticeable patterns. However, the highly activated photochemical regime shows strong diurnal variations of secondary PM10 concentrations with the maximum value of 35.1 μg/m³ at 1300LST.

참고자료

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