Application of the urban airshed model in the fraser valley of brittish coltish columia,canada and implications to local ozone control strategies

摘要

The Fraser Valley in the southwestern rovince of British Columbia,Canada is one of Canada's highest ozone concentration areas where the National Ambient Air Quality Obejctive of 82 ppb per hour is exceeded several times a year under high pressure ridge conditions (Taylor,1991; McKendry,1994).