A deeper understanding of the ambient aerosols in the Lower Fraser Valley and its policy implications: The 2nd special issue on Pacific 2001 Air Quality Study

摘要

The Pacific 2001 Air Quality, conducted in August 2001 in the Lower Fraser Valley (LFV) that straddles the international border between the United States and Canada, targeted the smog problems arising from emissions, transport and transformation, and interaction of pollutants in the valley. The scientific objectives of the study were to address several issues, in particular, to characterize (1) the horizontal and vertical distribution of fine particles and ozone, (2) the physical and chemical properties of fine particulates in LFV, and to determine the changes in these properties in the region, (3) the major physical and chemical processes in secondary aerosols and ozone formation, (4) the roles of biogenic and the transportation sector emissions in secondary organic aerosol and ozone formation. The study aimed to provide an integrated database for model evaluations of regional air quality models.