Continued Development of a Photochemical Model and Application to the Southern California Air Quality Study (SCAQS) Intensive Monitoring Periods. Phase 2. Model Application to the June 24-25 and December 10-11 Periods

摘要

Air quality models increasingly are being used as the basis for determining the effectiveness of proposed pollution control strategies in advance of the adoption of particular emission controls. The most advanced photochemical air quality models, such as the CIT (Carnegie/California Institute of Technology) model described here, calculate the evolution of pollutants by accurately describing the physical and chemical processes responsible for the chemical transformation, transport and fate of compounds in the atmosphere. In this fashion, they are the most scientifically sound foundation for testing the relative effectiveness of alternative emission controls. Further, they serve as the basis for policy decisions that must be made between alternative programs designed to improve air quality. The Southern California Air Quality Study (SCAQS) was conducted in the Los Angeles area during the summer and fall of 1987. The SCAQS data provide a much more comprehensive set of measurements with which to test urban-scale photochemical models.