Air Resources BoardCalifornia Environmental Protection Agency

OZONE SIP OZONE SIP MODELING and MODELING and

DATA ANALYSISDATA ANALYSISPolicy Committee Meeting

John DaMassaSaffet TanrikuluAjith KaduwelaMarch 13, 2003

O3 SIP Modeling and Data AnalysisO3 SIP Modeling and Data Analysis

Presentation overview• Data Analysis• Emission Inventory• Modeling

O3 SIP Modeling and Data Analysis O3 SIP Modeling and Data Analysis Cont.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

CCOS Data AnalysisCCOS 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

CCOS Data Analysis Cont.CCOS Data Analysis Cont.

Data analysis• Various data analysis methods are used• QA/QC is performed• Web site to display data