A COMPREHENSIVE EXPERIMENTAL DATA-BANK FOR THE VERIFICATION OF URBAN CAR EMISSION DISPERSION MODELS

A summary presentation is made of representative samples from a compre hensive experimental databank on car exhaust dispersion in urban stree t canyons. Physical modelling, under neutral stratification conditions , was used to provide visualization, pollutant concentration and veloc imetry measurements above and inside test canyons amidst surrounding u rban roughness. The study extended to two different canyon aspect rati os, in combination with different roof configurations on the surroundi ng buildings. To serve as a reliable basis for validation and testing of urban pollution dispersion codes, special emphasis was placed on da ta quality assurance.