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Modeling Urban Ozone Formation and Air Quality Impacts

This project by Danielle Rouleau, dated May 7, 2002, explores the formation of "bad" ozone and urban photochemical smog. It discusses reactions contributing to ozone (O2 + O → O3) and the role of volatile organic compounds (VOCs) and nitrogen oxides (NOx) from fossil fuel combustion, highlighting health concerns such as respiratory issues, headaches, and increased risks for the elderly and children. The study includes calibration results and a model for predicting air quality index (AQI) variations in places like St. Louis, taking into account meteorological and topographical factors.

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Modeling Urban Ozone Formation and Air Quality Impacts

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  1. Modeling Project by Danielle Rouleau May 7, 2002

  2. “Bad” Ozone Formation Urban or photochemical smog O2 + O  O3 VOCs + NOx + sunlight  smog VOCs or hydrocarbons: solvents, fuels, chemicals NOx: fossil fuels

  3. Health Concerns Irritant Respiratory Problems Headaches More problematic for elderly & children

  4. Calibration Results 9223 SSE value

  5. Ozone Model Graph

  6. St. Louis AQI Probability Distribution

  7. St. Louis AQI Probability Distribution

  8. How to Model AQI for Distant Locations Meteorological: temperature, precipitation, pressure Wind: speed and direction Topography variations between the locations Dispersion equations

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