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Atmospheric and Oceanic Optics

2014 year, number 11

The influence of the city on the atmospheric aerosol characteristics in Tomsk Akademgorodok in transitional seasons

E.P. Yausheva, M.V. Panchenko, V.S. Kozlov, S.A. Terpugova, D.G. Chernov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: regional background aerosol, impact of city, submicron aerosol, black carbon, mass concentration, parameter of condensation activity, spring and autumn seasons

Abstract

The influence of the city of Tomsk on the optical characteristics obtained in Akademgorodok in monitoring mode is studied on the basis of two-site experiments carried out at the Aerosol monitoring station IAO SB RAS and in the background region in spring and autumn 2011. Data of previous years are also considered. The peculiarities of temporal dynamics of the mass concentrations of the dry matter of aerosol and black carbon, as well as the parameter of condensation activity in the near-ground layer of the atmosphere are analyzed. It is shown that the influence of the city on the aerosol characteristics in Akademgorodok increases during last years. It is revealed that the excess of average values of the mass concentration of fine aerosol at the Aerosol monitoring station over the concentration values at the “Fonovaya” observatory is by 1.7 times in spring and 1.1 times in autumn. The excess of the concentration of black carbon is by 2.0 and 1.8 times, respectively. Maximum differences in the daily average behaviors at two sites are observed in the period of evening-nighttime maximum of concentrations (up to 3.0 times).