1. Georgia Institute of Technology Assessing the Impacts of Hartsfield- Jackson Airport on PM and Ozone in Atlanta Area Alper Unal, Talat Odman and Ted Russell School of Civil & Environmental Engineering Georgia Institute of Technology 2004 CMAS Workshop October 18 – 20 2004 Chapel Hill, NC

2. Georgia Institute of Technology Objectives Determine the impact of aircraft emissions on regional air quality for PM 2.5 and O 3 –Hartsfield-Jackson International Airport –Annual LTO > 420,000 Improve Emissions Estimation and Processing for Aircrafts –PM 2.5 estimation –Temporal and Spatial Distribution

3. Georgia Institute of Technology Hartsfield-Jackson Airport (Courtesy of City of Atlanta Department of Aviation)

4. Georgia Institute of Technology Emissions Inventory Fall Line Air Quality Study [August 11-20 2000] –Meteorological data –Emissions Data (EDMS 4.01) PM 2.5 Estimation (Method1) –General Aviation, Air Taxi, Military Aviation =>EF from EPA (ERG, 2003) –Commercial Air Aviation => Ratio wrt. Air Taxi VOC

5. Georgia Institute of Technology Emissions Inventory First Order Approximation (Method2) –Developed by FAA (Wayson and Fleming, 2001) –Characteristic Level (Corrected mean for test results)

6. Georgia Institute of Technology Emissions Inventory Pollutant (Tons/year) Without Aircraft With Aircraft (Method1) With Aircraft (Method2 for PM) CO05204 NO X 04910 SO 2 0473 VOC01013 PM 10 050062 PM 2.5 034543

7. Georgia Institute of Technology Emissions Processing Annual PM Emissions Annual Gas Emissions Temporal Distribution Spatial Distribution Speciation Air Quality Model Ready Emissions

8. Georgia Institute of Technology Emissions Processing Composition of PM 2.5 emissions (%) ECOCSO 4 NO 3 65.8729.214.600.32

9. Georgia Institute of Technology Aircraft Impact - Ozone Method1 Method2 Maximum sensitivity of regional concentrations to aircraft emissions

10. Georgia Institute of Technology Aircraft Impact - PM 2.5 Method1 Method2 Maximum sensitivity of regional concentrations to aircraft emissions

11. Georgia Institute of Technology GSE Impact - PM 2.5 Ozone PM 2.5 Maximum sensitivity of regional concentrations to Ground Support Equipment emissions

12. Georgia Institute of Technology Findings PM 2.5 emissions estimation method were improved Emissions processing framework has been developed Method1 estimates of aircraft emissions are overestimated Preliminary analysis shows impact of Hartsfield on EC and OC in southern metro counties