A Street Canyon Model Intercomparison in Florence, Italy

摘要: Assessing air quality in street canyons is a crucial concern, as the highest pollution levels and threshold exceedances are usually experienced within this kind of urban streets. A brief overview based on experimental studies modelling techniques undertaken literature presented, including characteristic features affecting wind flow pollutant dispersion canyons. In work, numerical canyon model intercomparison has been performed typical Florence, Italy. particular, STREET, Canyon Plume Box Model (CPBM) Operational Street Pollution (OSPM) have applied to compute street-level 1-h carbon monoxide (CO) concentrations. addition, CALINE4 test site morphology. Input data cover 1-year time period include meteorological observations well measured traffic volumes driving speeds. Hourly road emissions calculated using COPERT methodology taking into account vehicle fleet, flows speed, ambient temperature for cold overemissions. preliminary analysis carried out order investigate dependence observed CO concentrations parameters. over full year used compare CPB OSP models, resulting detailed statistical by sector seasonal basis.