Air quality during the 2008 Beijing Olympic Games |
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| Institution: | 1. Decision and Information Sciences Division, Argonne National Laboratory, Argonne, IL 60439, USA;2. Department of Civil & Environmental Engineering, University of Tennessee, Knoxville, TN 37996, USA;3. Office of Air Quality Planning & Standards, US Environmental Protection Agency, Research Triangle Park, NC 27711, USA;4. Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China;5. College of Environmental Sciences, Peking University, Beijing 100871, PR China;6. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, PR China;1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China;2. Key Laboratory of Organic Compound Pollution Control Engineering, Shanghai University, Shanghai, 200444, China;3. Shanghai Environmental Monitoring Center, Shanghai, 200235, China;4. School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA |
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| Abstract: | China is taking major steps to improve Beijing's air quality for the 2008 Olympic Games. However, concentrations of fine particulate matter and ozone in Beijing often exceed healthful levels in the summertime. Based on the US EPA's Models-3/CMAQ model simulation over the Beijing region, we estimate that about 34% of PM2.5 on average and 35–60% of ozone during high ozone episodes at the Olympic Stadium site can be attributed to sources outside Beijing. Neighboring Hebei and Shandong Provinces and the Tianjin Municipality all exert significant influence on Beijing's air quality. During sustained wind flow from the south, Hebei Province can contribute 50–70% of Beijing's PM2.5 concentrations and 20–30% of ozone. Controlling only local sources in Beijing will not be sufficient to attain the air quality goal set for the Beijing Olympics. There is an urgent need for regional air quality management studies and new emission control strategies to ensure that the air quality goals for 2008 are met. |
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