Study of tropospheric ozone in the tropical belt (Africa,America) from STRATOZ and TROPOZ campaigns |
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| Institution: | 1. Department of Family Medicine and Community Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;2. Center for Global Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;3. Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;1. COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, Georgia;2. Abt Associates, Atlanta, Georgia;3. Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia;4. Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia;5. County of San Diego Health & Human Services Agency, San Diego, California;6. Colorado Department of Public Health & Environment, Denver, Colorado;1. Department of Health Sciences Research, Division of Health Care Policy and Research, Mayo Clinic Robert D. and Patricia E. Kern, Center for the Science of Health Care Delivery, Jacksonville, FL, USA;2. Department of Public Health, Brooks College of Health, University of North Florida, 1 UNF Drive, Jacksonville, FL 32224, USA;3. Department of Health Administration, Brooks College of Health, University of North Florida, 1 UNF Drive, Jacksonville, FL 32224, USA;4. Department of Psychiatry & Psychology, Mayo Clinic Robert D. and Patricia E. Kern, Center for the Science of Health Care Delivery, Jacksonville, FL, USA;5. Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada |
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| Abstract: | During three large-scale airborne scientific missions (STRATOZ III: June 1984; STRATOZ III-S: March 1985; TROPOZ I: December 1987), the distributions of ozone and its precursors were measured in the tropical belt over the American and African continents, within an altitude range of 0–12 km. The results reveal an important difference between the northern part of South America, characterized in June by an important O3 depletion, and West Africa, where high O3 contents are observed as a result of enhanced formation from bush fires during a large period of the year. O3 concentrations as high as 160 ppb were observed in the neighborhood of emission areas, corresponding to formation rates on the order of several tens of ppb per hour. |
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