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논문 기본 정보

자료유형
학술저널
저자정보
이광연 (서울대학교) 곽경환 (서울대학교) 박승부 (서울대학교) 백종진 (서울대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제29권 제3호
발행연도
2013.6
수록면
307 - 316 (10page)

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초록· 키워드

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The sensitivity of ozone to NO<SUB>x</SUB> and volatile organic compounds (VOCs) emission rates under different ventilation rates and NO₂-to-NO<SUB>x</SUB> emission ratios in a street canyon is investigated using a chemistry box model. The carbon bond mechanism IV (CBM-IV) with 36 gaseous species and 93 chemical reactions is incorporated. NO<SUB>x</SUB> and VOCs emission rates considered range from 0.01 to 0.30 ppb s-1 with intervals of 0.01 ppb s-1. Three different ventilation rates and three different NO₂-to-NO<SUB>x</SUB> emission ratios are considered. The simulation results show that the ozone concentration decreases with increasing NO<SUB>x</SUB> emission rate but increases with increasing VOCs emission rate. When the emission ratio of VOCs to NO<SUB>x</SUB> is smaller than about 4, the ozone concentration is lower in the street canyon than in the background. On average, the magnitude of the sensitivity of ozone to NO<SUB>x</SUB> emission rate is significantly larger than that to VOCs emission rate. As the NO<SUB>x</SUB> emission rate increases, the magnitude of the sensitivity of ozone to NO<SUB>x</SUB> and VOCs emission rates decreases. Because the ozone concentration is lower in the street canyon than in the background, the increased ventilation rate enhances ozone inflow from the background. Therefore, the increase in ventilation rate results in the increase in ozone concentration and the decrease in the magnitude of the sensitivity of ozone to NO<SUB>x</SUB> and VOCs emission rates when the emission ratio of VOCs to NO<SUB>x</SUB> is smaller than about 4. On the other hand, the increase in NO₂-to-NO<SUB>x</SUB> emission ratio results in the increase in ozone concentration because the chemical ozone production due to the NO₂ photolysis is enhanced. In the present experimental setup, the contribution of the change in NO₂-to-NO<SUB>x</SUB> emission ratio to the change in the sensitivity of ozone to NO<SUB>x</SUB> emission rate is larger than that of the change in ventilation rate.

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Abstract
1. 서론
2. 모형 개요 및 실험 설계
3. 결과 및 고찰
4. 요약 및 결론
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UCI(KEPA) : I410-ECN-0101-2014-530-003338710