1. BRAVO Results of CMAQ-MADRID Betty Pun, Christian Seigneur & Shiang-Yuh Wu AER, San Ramon Naresh Kumar EPRI, Palo Alto 10 October 2002

2. CMAQ Modeling Domain

3. CMAQ Simulations Two episodes –5-15 October 1999 –10-25 August 1999 Simulations –Tracers: completed –Base PM simulations: completed, revised August simulation in progress –Emission sensitivity simulations: in progress

4. October Episode, 4-km and 12-km Simulations, Time Series Sulfate (  g/m 3 ) at Big Bend

5. October Episode, 4-km and 12 km Simulations, Regression Analysis Sulfate (  g/m 3 ) at Big Bend 4-km simulation 12-km simulation

6. October Episode, 12-km Simulation Regression Analysis Sulfate (  g/m 3 ), 39 Sites

7. Chemical Composition at Big Bend

8. Sulfate on 11 & 12 October

9. PM 2.5 on 11 & 12 October

10. O 3 on 11 & 12 October

11. August Episode, 4-km Simulation Time Series Sulfate (  g/m 3 ) at Big Bend Oct 17 18 19 20 21 22 23

12. August Episode, 4-km Simulation Regression Analysis Sulfate (  g/m 3 ) at Big Bend

13. CMAQ Performance First performance evaluation for a regional PM model with a comprehensive database (daily speciated data with good spatial coverage) Performance for October PM simulation is satisfactory, at least for BBNP Performance for August PM simulation is not satisfactory; sensitivity to boundary conditions is being investigated using REMSAD results to provide better temporal resolution

14. Emission Sensitivity Simulations 100% reduction in SO x emissions from –Mexico –Texas –Other states 50% reduction in NO x, VOC and CO emissions from –Mexico –Texas –Other states

15. CMAQ Schedule Tracer simulation results: Analysis completed in October Base PM simulations: August simulation revised by late November, performance evaluation drafted by end of November SO x emission sensitivity simulations for October episode completed by late November SO x emission sensitivity simulations for August episode completed by mid-January (revised simulation) NO x /VOC/CO emission sensitivity simulations completed by January (October episode) and February (August episode)