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This study investigates the relationship between ground-level ozone variability and synoptic weather conditions in the Chicago area in the summertime over the period 1990–2014. It shows that the occurrence of dry tropical (DT) weather conditions is most likely to lead to high ozone concentrations. Both the 95th percentile of summertime daily maximum 8-hour-average ozone concentrations and the number...
Despite strenuous efforts to reduce the emissions of ozone precursors such as nitrogen oxides (NO x ), concentrations of ground-level ozone (O 3 ) still often exceed the National Ambient Air Quality Standard in U.S. cities in summertime, including Chicago. Furthermore, studies have projected a future increase in O 3 formation due to global climate change. This study examines...
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