Spatiotemporal variations in atmospheric aerosol characteristics over the Kara, Barents, Norwegian, and Greenland Seas (2018-2021 expeditions)
S.M. Sakerin1, I.A. Kruglinsky1, D.M. Kabanov1, D.A. Kalashnikova2, M.D. Kravchishina3, V.I. Makarov1,4, S.A. Popova1,4, A.O. Pochufarov1, G.V. Simonova2, Yu.S. Turchinovich1, F.A. Darin5
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
5Budker Institute of Nuclear Physics of the Siberian Branch of the RAS, Novosibirsk, Russia
Keywords: atmosphere over the ocean, aerosol, black carbon, elemental and organic carbon, elemental and isotopic composition
Abstract
We discuss the results from measurements of aerosol physicochemical characteristics in summer 2021 in the Greenland-Kara sector of the Arctic Ocean (83rd and 84th cruises of RV “Akademik Mstislav Keldysh”). The studied characteristics included: the aerosol optical depth of the atmosphere, the aerosol and black carbon concentrations, as well as the chemical composition of aerosol samples, i.e., the concentrations of main elements, the concentrations of organic and elemental carbon, and the isotopic composition of carbon. For the most aerosol characteristics we noted lower average values as compared to the three preceding expeditions. Data from five expeditions are used to estimate the differences in the aerosol and black carbon concentrations among the Kara, Barents, Norwegian, and Greenland Seas.
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