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Atmospheric and Oceanic Optics

2020 year, number 5

Results of studying the physicochemical characteristics of atmospheric aerosol in 71th cruise of RV “Akademik Mstislav Keldysh”

S.M. Sakerin1, P.N. Zenkova1, D.M. Kabanov1, D.A. Kalashnikova2, A.P. Lisitzin3, V.I. Makarov4, V.V. Polkin1, S.A. Popova4, G.V. Simonova2, O.V. Chankina4, V.P. Shevchenko3
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
3P.P. Shirshov Institute of Oceanology, Moscow, Russia
4V.V. Voevodsky Institute of Chemical Kinetics and Combustion of the Siberian Branch of the RAS, Novosibirsk, Russia
Keywords: атмосфера Северной Атлантики, аэрозоль и сажа, содержание органического и элементного углерода, химический и изотопный состав, atmosphere of the North Atlantic, aerosol and black carbon, the content of organic and elemental carbon, chemical and isotopic composition


In summer 2018 along the route of 71th cruise of RV “Akademik Mstislav Keldysh” in the North Atlantic, we carried out measurements of atmospheric aerosol characteristics, in particular, aerosol optical depth, near-surface aerosol and black carbon concentrations, contents of chemical elements in aerosol samples and organic and elemental carbon, and isotopic composition of carbon. It is shown that the average values of most aerosol characteristics several-fold decrease during transit from the Baltic Sea to the North Atlantic (57-60°N) and then to the Norwegian Sea. For instance, the average black carbon concentration decreased from 83 to 29 ng/m3. Episodic impact of continental aerosol was noted even in remote regions of ocean. Outflow of smokes from forest fires in the north of Canada to the region of measurements (southward of Greenland) exerted the strongest effect on all aerosol characteristics. The average concentrations of chemical elements in aerosol composition over the North Atlantic were several times larger than in the Arctic region and smaller than in the background region of Siberia.