Long-term measurements of SO2 dry deposition over Gansu Province,China |
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| Institution: | 1. Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou, Gansu Province, 730000, PR China;2. MOE Laboratory of Western China''s Environmental Systems, Lanzhou University, Lanzhou, Gansu Province, 730000, PR China;3. Gansu Environment Monitoring Station, Lanzhou, Gansu Province, 730000, PRChina;1. School of Mathematics and Statistics, Central South University, Changsha, 410083, PR China;2. Seven Bridges Genomics, 1 Main Street, Cambridge, MA, 02142, USA;3. Tencent Technology (Shenzhen) Company Limited, Shenzhen, 518057, PR China;4. Program of Applied and Computational Mathematics, Princeton University Princeton, NJ, 08544, USA;5. School of Mathematics and Statistics, Guangxi Teachers Education University, Nanning, 530023, PR China;6. Center for Bioinformatics, School of Information Science and Engineering, Central South University, Changsha, 410083, PR China;1. International Institute for Earth System Science, Nanjing University, Nanjing, 210023, China;2. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 10012, China;3. State Experimental Teaching Demonstration Center for Environmental Science and Engineering, Nanjing University, Nanjing, 210023, China;4. State Key Laboratory of Pollution CYYUontrol and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China;5. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China;3. Industrial Technology Research Institute, ROC;1. Institute of Geological Sciences, University of Wroc?aw, Cybulskiego 30, 50-205 Wroc?aw, Poland;2. West Australian Biogeochemistry Centre, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;3. Institute of Physics, Marie Curie-Sk?odowska University, Maria Curie Sk?odowska square 1, 20-031 Lublin, Poland;4. Schlumberger, 127 avenue du Bois de la Pie, 95971 Roissy, France |
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| Abstract: | Potassium carbonate sulfation plates, monitored monthly for 11 years from 48 sites in 11 cities in Gansu Province, China, provide a crude estimate of cumulative SO2 dry depositions. Measured SO2 dry deposition rates were 1.6–472 mg m?2 day?1 and had seasonal variations with maxima in winter and minima mainly during summer as a result of higher winter and lower summer SO2 concentrations. The 11-year monthly average SO2 dry deposition rates are 23.2–248.97 and 11.7–175.6 mg m?2 day?1 in the eleven cities in winter and summer, respectively. A monthly average SO2 deposition velocity was also estimated from 0.06 to 9.72 cm s?2 in the 11 cities studied with a 11-year average maximum value of about 1.1–2.7 cm s?2 in April and July and a 11-year average minimum value of about 0.2–1.0 cm s?1 in January. The SO2 dry deposition velocity also exhibits an increasing with wind speed in basins of less than 500 mm annual precipitation. In contrast, due to influences of the relative humidity in valleys of more than 500 mm annual precipitation, it shows a decreasing trend with wind speed increasing. |
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