HR: 15:10h
AN: A53F-07    [Abstracts]
TI: Interactions between trace gases, aerosols, and clouds in polluted troposphere: preliminary results from field studies in spring and summer 2007 at Mt Tai in central-eastern China
AU: * Wang, T
EM: cetwang@polyu.edu.hk
AF: Department of Civil and Structural Engineering The Hong Kong Polytechnic University, Kowloon, Hong Kong, N/A, China
AU: * Wang, T
EM: cetwang@polyu.edu.hk
AF: Chinese Research Academy of Environmental Sciences, Beiyuan, Beijing, N/A, China
AU: Wang, J
EM: wangjin@sdu.edu.cn
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Wang, Y
EM: wy@sdu.edu.cn
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Zhang, J
EM: 06901845r@polyu.edu.hk
AF: Department of Civil and Structural Engineering The Hong Kong Polytechnic University, Kowloon, Hong Kong, N/A, China
AU: Gao, J
EM: duncan_gao@yahoo.com
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Ren, Y
EM: cerenyu@polyu.edu.hk
AF: Department of Civil and Structural Engineering The Hong Kong Polytechnic University, Kowloon, Hong Kong, N/A, China
AU: Wang, Z
EM: xiayu-523@163.com
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Zhou, Y
EM: boatzhou01@163.com
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Guo, J
EM: Guojia_1999_0@163.com
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Ding, A
EM: cedingaj@polyu.edu.hk
AF: Department of Civil and Structural Engineering The Hong Kong Polytechnic University, Kowloon, Hong Kong, N/A, China
AU: Zhou, X
EM: xuehuazhou@sdu.edu.cn
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Wang, X
EM: wangxz@craes.org.cn
AF: Chinese Research Academy of Environmental Sciences, Beiyuan, Beijing, N/A, China
AU: Xue, L
EM: buguoruci@mail.sdu.edu.cn
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Xu, P
EM: xpjsdjn@163.com
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Wang, X
EM: wangxinfeng@mail.sdu.edu.cn
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AU: Nie, W
EM: niewei@mail.sdu.edu.cn
AF: Environment Research Institute, Shandong University, Jinan, N/A, China
AB: As part of China's National Basic Research Project (National '973 Project) on sulfur and acid deposition, a large suite of trace gases, aerosols (physical and chemical properties), and cloud water composition were measured in the spring and summer of 2007 at the summit of Mount Tai, the highest mountain (1534 m above the sea level) in the polluted central-eastern plains of China. The main objective was to study the chemical transformation of trace gases and aerosols and their interactions with clouds under conditions of high SO2 and particulate matter. We report here the preliminary results from the two-phase measurements. High concentrations of trace gases and aerosols were observed during the spring phase. Two major dust events were observed in the end of March with the PM10 concentration reaching > 1500 £gg/m3 at the mountain top. Pollution plumes with SO2 of 40-60 ppbv were frequently observed during the spring study indicating strong transport of surface pollution to the upper Planetary Boundary Layer and the free troposphere. Cloud water acidity showed a vary large variation ranging from very acidic to basic, with high concentrations of ions such as sulfate, nitrate, ammonia and calcium. The data in the two seasons will be compared to show the influence of dust and photochemical processes on the chemical composition, and the budget of reactive nitrogen and the ozone production efficiencies will be examined. The relationship between major trace gases, aerosols, and cloud water composition will also be shown.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting