Purpose: Assess the representativeness of the 1995 ozone season in the Northeast in the context of the past 15 ozone seasons. The motivation for this study was the realization that the summer of 1995 was one of the hottest on record for the Northeastern United States, and that the 1995 summer season was therefore a strong candidate to experience high ozone concentrations.
Purpose: Recommend ozone monitoring sites in the Northeast to be used for evaluation of the OTAG base case regional photochemical model simulations for the July 1988, 1991, 1993, and 1995 episodes.
Purpose: Develop a trajectory based method for investigating the spatial impact of ozone and ozone precursors from selected source areas (the source region of influence). Apply the technique to the Eastern US to characterize potential source regions of influence and transport patterns during the summers (June August) of 199195 for periods of high and low ozone concentrations in New England, the South East, and the Midwest.
Purpose: Perform a back-trajectory based analysis of relationships between high regional ozone levels and transport pathways. Develop trajectory climatologies for regionally representative receptor locations throughout the OTAG domain and use trajectory sorting techniques to identify predominant transport pathways when ozone is high at the receptors.
Purpose: Estimate the spatial representativeness of data collected at routine ozone monitoring sites and the typical size of airsheds (zones of influence). Identify principal features of the spatial and temporal characteristics of daily maximum 1-hour and 8-hour ozone concentrations within three distinct frequency domains: long-term (i.e., annual), seasonal, short-term.
