Overview of the 1997 Southern California Ozone Study (SCOS97-NARSTO)

During the summer of 1997, the Southern California Ozone Study-NARSTO1 (SCOS97-NARSTO) was conducted in order to update and improve the existing emission, meteorological, and air quality databases and model applications for representing urban-scale ozone episodes in Southern California, and to quantify the contributions of ozone generated from emissions in Southern California air basins to US and California ambient ozone standard exceedances in neighboring air basins. The SCOS97-NARSTO also examined the generation and evolution of typical late-summer and early fall aerosols in the Los Angeles area. This paper describes the study area and design of the field campaign, summarizes the field measurements, and reviews data analysis and modeling efforts.