This study relates NOxconcentrations and wind (speed and direction) measured inside an asymmetric street canyon, with ambient wind. The monitoring site is located near a street intersection. The wind measured at the domestic airport located in the city, near the coast, has been considered as ambient wind. Wind direction at the monitoring site inside the canyon is mainly from the E, NE, W and NW for any ambient direction. In general, the behaviour of horizontal airflow at the monitoring site for different ambient wind directions seems to be quite similar to those observed at other street intersections reported in the literature.
Keywords: street intersections, street canyons, air quality monitoring, air pollution, traffic pollution, Buenos Aires, Argentina, NOx concentration, wind direction, dispersion modelling, vehicle emissions, wind speed, road intersections