Dry deposition of SO2 |
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| Affiliation: | 1. Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China;2. Department of Materials Science and Engineering, Fuzhou University, 350116 Fuzhou, China;3. Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China;4. Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, 100191 Beijing, China;1. State Key Laboratory of Severe Weather & CMA Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China;2. China Waterborne Transport Research Institute, Beijing 100088, China;3. CMA Meteorological Observation Centre, Beijing 100081, China;4. Shangdianzi Regional Air Background Station, Beijing, Meteorological Bureau, Beijing 101507, China;5. Meteorological Bureau of Shijiazhuang, Shijiazhuang 050081, China |
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| Abstract: | SO2 concentration gradient measurements are reported, which have been carried out between May 1975 and September 1976 at the Kernforschungsanlage Jülich. Most of the measurements were made with differential optical absorption spectroscopy.Mirrors at various heights (30, 80, 120m) on the meterological tower were used to reflect the light beam back to the laboratory placed at the ground. In this way absorption paths of about 600m were obtained. In some cases, the optical data were compared with chemical measured concentration profiles (after West & Gaeke. 1976) showing an agreement within ±20%. From simultaneously measured temperature and wind profiles the transfer resistance of the turbulent boundary layer was calculated.Average values of the vertical SO2-flux obtained from SO2 concentration gradient and atmospheric transfer resistance varied from about 0.6 μg m−2s−1 in winter and 0.1 to 0.4 μg m−2s−1 in summer, corresponding to a lifetime for SO2. if dry deposition is taken as the only sink mechanism, of half a day up to several days, respectively. |
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