HR: 1340h
AN: A33E-1650    [Abstracts]
TI: Temporal And Spatial Variation Of The Aerosol Characteristics In The Urban Area
AU: * Koo, J
EM: zach45@yonsei.ac.kr
AF: Yonsei University, Room 701, Science hall, 134 Sinchon-Dong, Seodaemun-Gu, Seoul, 120-749, Korea, Republic of
AU: Kim, J
EM: jkim2@yonsei.ac.kr
AF: Yonsei University, Room 701, Science hall, 134 Sinchon-Dong, Seodaemun-Gu, Seoul, 120-749, Korea, Republic of
AU: Mok, J
EM: mc2@yonsei.ac.kr
AF: Yonsei University, Room 701, Science hall, 134 Sinchon-Dong, Seodaemun-Gu, Seoul, 120-749, Korea, Republic of
AB: Aerosols have been recognized as one of the important factors in understanding climate changes. Due to the persistent dust storms with growing air pollutants, the air mass in Asia includes natural aerosols mixed with variable sources of anthropogenic aerosols, in particular. To date, numerous studies have examined both physical and chemical characteristics of aerosol from ground-based and satellite platform. Extensive ground- based network and satellite missions have been in operation for a long time, and produced global dataset. In this regard, we can scrutinize the temporal and spatial characteristics of aerosol using these data, in urban area compared to rural area, in particular. Seasonal variations have been observed in optical properties of aerosols, due to the emission of fine mode particle and hygroscopic effect. Weekly cycle is also one of the apparent signals in the urban area due to the anthropogenic activities. The trends of aerosol characteristics are obtained using the long-term data. Severe aerosol loading usually occurred in the East and South Asia while the loading is relatively low in Europe and North America. The temporal variations show different regional characteristics.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 4801 Aerosols (0305, 4906)
DE: 4906 Aerosols (0305, 4801)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting