Research Projects

Project at a Glance

Title: SCOS97-NARSTO 1997 Southern California Ozone Study and aerosol study. Volume I: Operational program plan. Volume II: Quality Assurance Plan. Volume III: Summary of Field Study. Volume IV: Summary of Quality Assurance

Principal Investigator / Author(s): Fujita, Eric M

Contractor: Desert Research Institute

Contract Number: 93-326

Research Program Area: Atmospheric Processes

Topic Areas: Field Studies, Monitoring


The California Air Resources Board (ARB), San Diego County Air Pollution Control District (SDAPCD), South Coast Air Quality Management District (SCAQMD), Ventura County Air Pollution Control District (VCAPCD), U.S. Environmental Protection Agency (EPA), Region IX and the U.S. Navy are planning the 1997 Southern California Ozone Study (SCOS97). The goals of the study are to update and improve the existing aerometric and emission databases and model applications for representing urban-scale ozone episodes in Southern California, and to quantify the contributions of ozone generated from emissions in one Southern California air basin to federal and state ozone standard exceedances in neighboring air basins. These goals are to be met through a five-year process which includes analysis of existing data, execution of a large-scale field study to acquire a comprehensive database to support modeling and analysis, analysis of the data collected during the field study and the development, evaluation and application of an air quality simulation model for Southern California. SCOS97 is intended to provide another milestone in the understanding of relationships between emissions, transport and ozone standard exceedances in Southern California as well as to facilitate planning for further emission reductions needed to attain the NAAQS.

This field study plan summarizes existing information on emissions, summer ozone climatology, current air quality and provides a conceptual model for the ozone episodes and transport scenarios of interest. It specifies a core measurement program along with optional elements to meet data requirements for data analysis and modeling. It also describes the required quality assurance, data validation, and data management needs. The field study plan is a working document and this first draft represents the current status of the planning efforts for SCOS97 as of this date. Suggestions to improve the plan are welcome. Send comments to Mr. Bart Croes (916/323-1534) or Dr. Ash Lashgari (916/323-1506) of the ARB at the following address: Research Division,
California Air Resources Board,
P.O. Box 2815,
Sacramento, CA 95812


For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893

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