In-depth characterization of submicron particulate matter inter-annual variations at a street canyon site in Northern Europe

Abstract. Atmospheric aerosols play an important role in air pollution. Aerosol particle's chemical composition is highly variable depending on the season, hour of the day, day of the week, meteorology, and the location of the measurement site. Long measurement periods and high time-resolved data are required in order to achieve statistically relevant amount of data for assessing those variations and evaluate pollution episodes. In this study, we present continuous atmospheric PM1 (particulate matter