Organic aerosol in air of Siberia and the Arctic. Part 3. Forest fire porducts
P.N. Antohin1, V.G. Arshinova1, M.Yu. Arshinov1, B.D. Belan1, S.B. Belan1, N.G. Voronetskaya2, A.K. Golovko2, D.K. Davydov1, G.A. Ivlev1, A.V. Kozlov1, A.S. Kozlov3, S.B. Malyshkin3, G.S. Pevneva2, T.M. Rasskazchikova1, D.E. Savkin1, D.V. Simonenkov1, T.K. Sklyadneva1, G.N. Tolmacheva1, A.V. Fofonov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2Institute of Petroleum Chemistry of the Siberian Branch of the RAS, 3, Academichesky ave., Tomsk, 634021, Russia
3V.V. Voevodsky Institute of Chemical Kinetics and Combustion of the Siberian Branch of the RAS, 3 Institutskaya str., 3, 630090, Novosibirsk, Russia
Keywords: атмосферный аэрозоль, состав, углеводороды, atmospheric aerosol, composition, hydrocarbons
Abstract
The contribution of wildfires into the content of the organic component of aerosol is studied on the basis of data of two flight campaigns carried out along the route Novosibirsk - Yakutsk - Novosibirsk in 2012 and 2013. The campaign of 2012 took place under conditions of extensive wildfires in Siberia, the campaign of 2013, on the contrary, in background conditions. The analysis of the selected aerosol samples shows that concentration of organic compounds during fires increases on the average by 35 times in the surface air layer and from 3 to 23 times in the free atmosphere in comparison with the background conditions. The composition of the organic component in the free atmosphere during fires changes depending on the region. At the Tomsk - Mirnyi segment, alkanes n-C19H40 - n-C21H44 prevailed in the aerosol samples; from Mirnyi to Yakutsk, the main concentration peak fell in the range of high-molecular compounds n-C19H40 - n-C25H52; at the Bratsk - Novosibirsk segment, low-molecular alkanes n-C12H26 -n-C18H38 prevailed in the aerosol composition.
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