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Comparison of Ozone Concentrations between Atlanta and other Georgia cities

Comparison of Ozone Concentrations between Atlanta and other Georgia cities. Andrea Thompson EAS 6410 Spring 2004. Overview. Looked at ozone data from August 2001 for 6 Georgia cities: Atlanta, Augusta, Columbus, Macon, Griffin, Tifton Analyses performed: Simple comparison

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Comparison of Ozone Concentrations between Atlanta and other Georgia cities

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  1. Comparison of Ozone Concentrations between Atlanta and other Georgia cities Andrea Thompson EAS 6410 Spring 2004

  2. Overview • Looked at ozone data from August 2001 for 6 Georgia cities: Atlanta, Augusta, Columbus, Macon, Griffin, Tifton • Analyses performed: • Simple comparison • Correlation between Atlanta and each other city • Correlation of NOy b/t Atlanta and Griffin, Macon

  3. RH + 4O2 R’CHO + 2O3 + H2O Formation of Ground Level Ozone • Net reaction: • In urban areas, O3 production is limited by supply of HC’s (elsewhere by supply of NOx) (where R is an organic group; RH is a hydrocarbon (HC))

  4. Correlations with Atlanta concentrations • Best correlation with Macon and Griffin – both downwind of city (NOx and HC transported, not really O3 itself) • Augusta and Columbus not in direct wind path • Tifton too far away to be influenced

  5. Correlation with Atlanta NOy • Lack of strong correlation suggests these cities are more influenced by HC’s from Atlanta – have hydrocarbon-limited regime

  6. Conclusion • Macon and Griffin only cities really influenced by Atlanta • Probably influenced mostly by HC emissions from Atlanta (since NOx does not correlate strongly)

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