Lee, Seung-Bok Bae, Gwi-Nam Lee, Young-Mee Moon, Kil-Choo Choi, Mansoo 2024-01-20T18:03:19Z 2024-01-20T18:03:19Z 2021-09-05 2010-12 1680-8584 https://pubs.kist.re.kr/handle/201004/130866 Urban residents are exposed to high levels of ozone that are produced by photochemical reactions of ambient air in strong sunlight. The potential for ozone formation of urban air needs to be characterized in order to avoid exposure to unexpectedly high ozone concentrations during the daytime. In this study, ten sets of twin smog chamber experiments were carried out to determine the correlation between light intensity and ozone formation during photochemical reactions of urban air in Seoul. Single chamber analysis revealed a higher rate of ozone production under higher irradiation than under less intense irradiation under similar initial ambient air conditions. However, the rate of ozone production showed significant variations at the same light intensity. Here, the ratio of two light intensities for both chambers was introduced as a key parameter. The ratio of ozone production was dependent on the ratio of the two light intensities according to a power function with a factor of approximately 1.8. The proposed correlation was used to predict the daytime ozone concentration for calm, clear and dry weather conditions. English TAIWAN ASSOC AEROSOL RES-TAAR AMBIENT AIR MECHANISMS NOX IRRADIATION CHEMISTRY MODEL KOREA GAS Correlation between Light Intensity and Ozone Formation for Photochemical Smog in Urban Air of Seoul Article 10.4209/aaqr.2010.05.0036 1 AEROSOL AND AIR QUALITY RESEARCH, v.10, no.6, pp.540 - 549 AEROSOL AND AIR QUALITY RESEARCH 10 6 540 549 scie scopus 000283514000003 2-s2.0-78149240345 Environmental Sciences Environmental Sciences & Ecology Article AMBIENT AIR MECHANISMS NOX IRRADIATION CHEMISTRY MODEL KOREA GAS Ozone production rate Light intensity Photooxidation Twin smog chambers Urban air