The influence of tropospheric ozone on the air temperature of the city of Toronto,Ontario, Canada |
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| Institution: | 1. EOHSI – Exposure Science Division, Rutgers University, 170 Frelinghuysen Road, Piscataway, NJ, 08854, USA;2. EOHSI – Clinical Research and Occupational Medicine Division, Rutgers University, 170 Frelinghuysen Road, Piscataway, NJ, 08854, USA;3. Rutgers School of Public Health, USA;4. EOHSI – Environmental Epidemiology and Statistics Division, Rutgers University, 683 Hoes Lane West, Piscataway, NJ, 08854, USA;1. Civil Engineering, McGill University, Canada;2. Département de Santé Environnementale et Santé au Travail, Université de Montréal, Canada;3. Civil, Environmental and Construction Engineering, University of Central Florida, United States;4. Oliver Wyman Consulting, Montreal, Canada;5. Direction régionale de santé publique du CIUSS du Centre-Sud-de-l’Île de Montréal, Canada;6. Civil Engineering, University of Toronto, 35 St George Street, Toronto, ON M5S 1A4, Canada;1. Environmental Resource Studies Program, Trent University, Peterborough, Ontario K9J 7B8, Canada;2. Environmental and Life Sciences Graduate Program, Trent University, 1600 West Bank Drive, Peterborough, Ontario K9J 7B8 Canada;1. Department of Civil Engineering and Applied Mechanics, McGill University, 817 Sherbrooke St. W., Room 492, Montréal, Québec H3A 2K6, Canada;2. Department of Sociology, University of New Brunswick, New Brunswick, Canada;3. Department of Medicine, McGill University, Division of Clinical Epidemiology, McGill University Health Centre, QC H3A 1A1, Canada;4. Department of Geography, McGill University, 805 Sherbrooke St. W., Montreal, Quebec H3A 2K6, Canada;5. Department of Epidemiology and Biostatistics, McGill University, 805 Sherbrooke St. W., Montreal, Quebec H3A 2K6, Canada;6. Department of Civil, Environmental and Construction Engineering, University of Central Florida, 12800 Pegasus Drive, Room 301D, Orlando, FL 32816, USA;7. Department of Civil Engineering, University of Toronto, 35 St George Street, Toronto, ON M5S 1A4, Canada;1. Department of Atmospheric Sciences, National Taiwan University, Taiwan;2. Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, USA |
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| Abstract: | Weekday/weekend variations in tropospheric ozone concentrations were examined to determine whether ground-level greenhouse gases have a significant impact on local climate. The city of Toronto, Canada, was chosen due to a high volume of commuter traffic and frequent exposure to high ozone episodes. Due to day-of-the-week variations in commuter traffic, ozone concentrations were shown to vary significantly between weekdays and weekends. During high ozone episodes weekend air temperatures were significantly higher than those observed on weekdays. As no meteorological phenomenon is known to occur over a 7 day cycle the observed temperature variations were attributed to anthropogenic activity. |
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