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Atmospheric and Oceanic Optics

2018 year, number 5

Results of investigations of aerosol characteristics in the atmosphere of the Kara and Barents Seas in summer and autumn of 2016

S.A. Terpugova1, P.N. Zenkova1, D.M. Kabanov1, V.V. Pol'kin1, L.P. Golobokova2, M.V. Panchenko1, S.M. Sakerin1, A.P. Lisitzin3, V.P. Shevchenko3, N.V. Politova3, V.S. Kozlov1, T.V. Khodzher2, V.P. Shmargunov1, D.G. Chernov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2Limnological Institute of the Siberian Branch of the RAS, 3, Ulan-Batorskaya str., 664033, Irkutsk, Russia
3P.P. Shirshov Institute of Oceanology of the Russian Academy of Sciences, 36 Nahimovskiy pr., Moscow, 117997, Russia
Keywords: НИС В«Академик Мстислав КелдышВ», морская атмосфера, аэрозоль, микрофизические характеристики, химической состав, аэрозольная оптическая толща, RV “Akademik Mstislav Keldysh”, marine atmosphere, aerosol, microphysical characteristics, chemical composition, aerosol optical depth

Abstract

Results of measurements of a complex of aerosol microphysical, chemical, and optical characteristics in two cruises of the research vessel «Akademik Mstislav Keldysh» in 2016 are analyzed. The work was carried out in the Kara Sea from July 10 till August 20 and in the Barents Sea from August 25 till October 10, 2016. The mean values of the following aerosol characteristics are presented: AOD of the atmosphere, fine and coarse components of AOD, number concentration of particles in the near-water layer of the atmosphere, mass concentrations of the absorbing matter («soot»), water-soluble ions (Na+, Mg2+, Cl-, K+, Ca2+, NH4+, NO3-, SO42-), and gaseous admixtures (SO2, HCl, HNO3, NH3). The characteristic particle size distribution functions are presented for different regions of the Kara and Barents Seas. It is shown that the levels of both aerosol turbidity of the atmospheric column (AOD) and the concentrations of aerosol and soot in the near-water atmospheric layer were close to the long-term mean values in Arctic latitudes. The atmospheric turbidity during the period of measurements was noticeably affected by emissions of forest fire smokes from the continent. The contribution of smoke aerosol into the mean values of AOD at λ = 0.5 µm obtained from shipborne measurements is about 44%.