Химия в интересах устойчивого развития 24 (2016) 423440 UDC 551.510.4 DOI: 10.15372/KhUR20160401 Long-Term Investigations of the Spatiotemporal Variability of Black Carbon and Aerosol Concentrations in the Troposphere of West Siberia and Russian Subarctic V. S. KOZLOV, M. V. PANCHENKO, V. P. SHMARGUNOV, D. G. CHERNOV, E. P. YAUSHEVA, V. V. POLKIN and S. A. TERPUGOVA Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia E-mail: vkozlov@iao.ru Abstract The results of aircraft and near-ground investigations of the spatiotemporal variability of aerosol and black carbon (BC) concentrations in the troposphere for the last two decades are reviewed. <...> The data of airborne sensing were used for analysis of common and distinctive features of the spatial variability of vertical profiles of aerosol and BC concentrations, ВС fraction, single scattering albedo (SSA) in the visible. <...> The classifications of typical optical and microphysical states of the subarctic troposphere have been performed for: 1) high transparency of air in the polar latitudes; 2) strong impact of Siberian forest fires in warm season; 3) conditions of regional average background atmosphere in the middle latitudes. <...> As the latitude increases in the range of 5575.2°N, the near-ground aerosol and BC concentrations decrease threefold, on average. <...> In the subpolar latitudes, a tendency to decrease of the concentrations in the direction from the west (Kara Sea) to the east (Eastern Subarctic) is observed. <...> The generalized empirical model of the tropospheric aerosol in middle latitudes of West Siberia for cloudless atmosphere had been developed for the first time and allows calculating the seasonal average vertical profiles of SSA needed for estimation of the direct climate impact of aerosol. <...> The main features of diurnal, seasonal, and inter-annual dynamics of BC and aerosol concentrations, and BC fraction have been studied for the near-ground measurements and parameterization of these dependences are performed. <...> Key words: aerosol, black carbon, spatial-temporal variability, troposphere, vertical profiles, empirical model of tropospheric aerosol, Russian Subarctic 423 INTRODUCTION The urgency of comprehensive investigations of spatial-temporal variability of the aerosol and black carbon (BC) concentrations in the troposphere has increased sharply in recent years in connection with the significant effect exerted by the carbonaceous aerosol coming to the Arctic as a result of the long-range atmospheric air mass <...>