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Atmospheric and Oceanic Optics

2015 year, number 6

Investigations of insoluble particles in the snow cover of the Western Siberia from Tomsk to the Ob estuary

V.P. Shevchenko1, S.N. Vorobev2, S.N. Kirpotin3, I.V. Kritskov3, R.M. Manasypov3, O.S. Pokrovsky3, N.V. Politova1
1P.P. Shirshov Institute of Oceanology, 36, Nakhimovski prospect, Moscow, Russia, 117997
2National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050,Russia
3Laboratory biogeochemical and remote monitoring techniques environment «BioClimLand, 36, Lenin Avenue, Tomsk, 634050,Russia
Keywords: snow cover, Western Siberia, sedimentary matter, scanning electronic microscope

Abstract

Insoluble particles of snow cover along the meridional profile from Tomsk to the Ob estuary in late winter were investigated. The lowest values of particle concentrations were observed in the north-western part of the Tomsk region and in the Yamal-Nenets Autonomous District (from Gubkinsky village to the east coast of the Ob estuary near Yamburg village). The highest concentrations of insoluble particles were observed near the city of Tomsk and in the Khanty-Mansi and Yamal-Nenets autonomous districts in the area from Surgut to Gubkinsky village. Mineral particles were dominated in the samples composition, furthermore biogenic particles (fibers, leaf diatoms, pollen) and particles formed by the combustion of various fuels (ash and black carbon) prevailed. Important sources of black carbon and ash particles are chimney fires of associated gas, motor transport, and heating systems.