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In big cities, vehicle exhaust gases can be trapped inside deep and poorly ventilated urban complex geometries (street-canyons, tunnels and covered roadways). The covered roadway is a typical configuration characterized by high emissions, poor ventilation and exposure to large numbers of people. High concentration of pollutant gases may be expected with low winds, or when the wind is oriented perpendicular...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.