The tagged species engineering model (TSEM) |
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| Institution: | 1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044, China;3. Guizhou institute of Mountainous Climate and Environment, Guiyang 550005, China |
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| Abstract: | The Tagged Species Engineering Model (TSEM), a three-dimensional Eulerian model, has been developed to examine source-receptor relationships and the response of sulfate deposition to hypothetical control strategies for sulfur dioxide source emissions. Archived output files from a comprehensive Eulerian model (the Regional Acid Deposition Model) are used to provide necessary input values of ozone, hydrogen peroxide, hydroxyl and hydroperoxy radicals, and other oxidants. Sulfur dioxide is then oxidized to sulfate by both gas-phase and aqueous-phase reactions. Results from comparisons of the simplified model with the comprehensive model show that TSEM represents sulfate deposition very well both for base case emissions and for a hypothetical 50% reduction in all sulfur-emitting sources. Source-receptor relationships are exhibited by means of tagged sulfur emissions, as illustrated in two examples. |
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