HR: 0800h
AN: A11A-0024    [Abstracts]
TI: Fine Particulate Pollution and its Impact on Visibility Impairment in the Seoul Metropolitan Area during 2002-2004 Campaigns
AU: * Kim, Y
EM: yjkim@gist.ac.kr
AF: ADvanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong Buk-gu, Gwangju, 500-712 Korea, Republic of
AU: Jung, H
AF: ADvanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong Buk-gu, Gwangju, 500-712 Korea, Republic of
AU: Kim, M
AF: ADvanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong Buk-gu, Gwangju, 500-712 Korea, Republic of
AU: Lee, B
AF: ADvanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong Buk-gu, Gwangju, 500-712 Korea, Republic of
AU: Kim, S
AF: Department of Environmental Engineering, University of Seoul, 90 Cheonnong-dong Donghaemun-ku, Seoul, 130-743 Korea, Republic of
AU: Park, J
AF: Department of Environmental Engineering, University of Seoul, 90 Cheonnong-dong Donghaemun-ku, Seoul, 130-743 Korea, Republic of
AU: Lee, D
AF: Department of Chemistry, Yonsei University, 134 Sinchon-dong Seodaemun-gu, Seoul, 120-749 Korea, Republic of
AU: Lee, B
AF: Department of Chemistry, Yonsei University, 134 Sinchon-dong Seodaemun-gu, Seoul, 120-749 Korea, Republic of
AU: Han, J
AF: Air Quality Research Division, National Institute of Environmental Research, Environmental Research Complex Kyungseo-Dong Seo-gu, Incheon, 404-170 Korea, Republic of
AU: Lee, S
AF: Air Quality Research Division, National Institute of Environmental Research, Environmental Research Complex Kyungseo-Dong Seo-gu, Incheon, 404-170 Korea, Republic of
AU: Kim, K
AF: Department of Environmental Engineering, Gyeongju University, San 42-1 Hyohyun-dong, Gyongju, 780-112 Korea, Republic of
AB: In order to investigate the causes for fine particulate pollution and visibility impairment in the Seoul metropolitan area, extensive aerosol chemical and optical monitoring had been conducted at two urban sites, Junnong, Seoul and Younghyun, Incheon during six seasonal intensive monitoring periods (IMP); 5-26 August and 20-28 October 2002, 10-24 January and 6-14 June 2003, and 6-15 January and 13-22 April 2004. Light extinction and scattering coefficient were measured simultaneously with a transmissometer and a nephelometer, respectively. Average light extinction coefficient and visual range were measured to be 569›r"£338Mm-1 and 6.9›r"£5.4km at Junnong, Seoul and 614›r"£409Mm-1 and 6.4›r"£4.7km at Younghyun, Incheon, respectively. Light extinction budget for six major aerosol components; ammonium sulfate (NHSO), ammonium nitrate (NHNO), elemental carbon (EC) and organic carbon (OC) particles, fine soil (FS), and coarse particles (CM) was estimated based on the measured aerosol chemistry data. When the visibility was degraded from the worst 20% to the best 20% condition, percent increased contribution by each aerosol component was estimated to be 28.9% (NHSO), 16.8% (NHNO), 7.4% (OC), 22.4%(EC), 1.2% (FS), and 23.3% (CM), respectively at Junnong, Seoul. Contributions by ammonium sulfate and ammonium nitrate included the effects of relative humidity increase, which accounted for 47.4% and 59.5% of them, respectively. Impact of air mass characteristics on the visibility condition over the Seoul metropolitan area was also analyzed based on the air mass pathway information obtained using the HYSPLIT model.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting