1. Air Resources Board California Environmental Protection Agency OZONE SIP MODELING and DATA ANALYSIS Policy Committee Meeting John DaMassa Saffet Tanrikulu Ajith Kaduwela March 13, 2003

2. O3 SIP Modeling and Data Analysis Presentation overview Data Analysis Emission Inventory Modeling

3. O3 SIP Modeling and Data Analysis Cont. Team approach Coordination among ARB and districts –Meetings and conference calls –Emissions inventory coordination group Modeling effort by districts CCOS contractors and Technical Committee

4. CCOS Data Analysis CCOS database Meteorological measurements –Winds, temperature, humidity and solar radiation Air quality measurements –Ozone, NO, NO2, HC, and carbonyl Surface, remote sensing and aircraft measurements

5. CCOS Data Analysis Cont. Data analysis Various data analysis methods are used QA/QC is performed Web site to display data