Seasonal trends of surface carbon monoxide concentrations in relation with air quality

This paper explores trends of air surface Carbon monoxide (CO) in relation with Particle Materials (PM10), Nitrogen dioxide (NO2), Air Quality (AQ) and meteorological parameters in Bucharest test area in Romania during March 2016 - February 2017. The major sources of air pollution with high CO contribution in urban areas are vehicular emissions, wildfires and biomass burnings for residential heating. The frequency distribution patterns of each target compound were evaluated for entire period using the relevant daily mean values. The lower summer values of CO concentrations are attributed to photochemistry, and more efficient dispersion, while winter enhanced values of CO concentrations can be attributed to the extensive use of central heating, decreased photochemistry, shallower boundary layer and poor dispersion due to stationary conditions. Positive Pearson Coefficients of CO concentrations have been recorded for Particle Materials PM10, Nitrogen dioxide NO2, as well as with air humidity and pressure meteorological parameters.