Comparative analysis of chemical reaction mechanisms for photochemical smog |
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| Institution: | 1. Andalusian Institute for Earth System Research, IISTA-CEAMA, University of Granada, Junta de Andalucía, Granada, Spain;2. Department of Applied Physics, University of Granada, Granada, Spain;3. Fundación CEAM, Paterna, Valencia, Spain;4. Atmospheric Pesticide Research Group of Valencia, Valencia, Spain;1. Aalto University, Department of Civil Engineering, PO Box 12100, FI-00076 Aalto, Finland;2. Queensland University of Technology, International Laboratory for Air Quality and Health, 2 George Street, Brisbane Q 4001, Australia;3. Fraunhofer WKI, Department of Material Analysis and Indoor Chemistry, 38108 Braunschweig, Germany;1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;2. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;3. CSIRO Energy, North Ryde, NSW 1670, Australia;4. New South Wales Department of Planning, Industry and Environment, Lidcombe, NSW 1825, Australia |
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| Abstract: | Six chemical reaction mechanisms for photochemical smog are analyzed to determine why, under identical conditions, they predict different maximum ozone concentrations. Answers to previously inaccessible questions such as the relative contributions of individual organic species to photochemical ozone formation are obtained. Based on the results of the analysis we have identified specific aspects of each mechanism that are responsible for the discrepancies with other mechanisms and with an explicit mechanism based on the latest understanding of atmospheric chemistry. For each mechanism critical areas are identified that when altered bring the predictions of the various mechanisms into much closer agreement. Thus, we identify why the predictions of the mechanisms are different, and have recommended research efforts that are needed to eliminate many of the discrepancies. |
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