Atmospheric transport of black carbon to the Russian Arctic from different sources: winter and summer 2000-2016
A.A. Vinogradova1,2, Yu.A. Ivanova1
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
2North-Western Branch of the P.P. Shirshov Institute of Oceanology RAS, Arkhangelsk, Russia
Keywords: Russian Arctic, black carbon (BC), near-surface atmosphere, model calculation, satellite data on BC emissions
Abstract
Model estimates of the concentrations of black carbon (BC) in the surface air at four sites located on Kola Peninsula, in Arkhangelsk region, and on the territories of Nenetz and Gydansky nature reserves were carried out for winter and summer 2000-2016 based on satellite data. The long-range atmospheric BC transport is analyzed by the author's methodology for calculating the function of sensitivity to potential sources of submicron aerosol for the sites under study based on the statistics of back trajectories of air mass transport. The contribution of anthropogenic sources to BC concentration in every region generally prevails over the contribution of natural fires. The BC concentration in surface air is maximal over the Nenets Nature Reserve and, hence, over the Pechora Sea, where the main sources of this impurity all year round are gas flares at the Russian largest oil and gas provinces. The average, median, and maximal values of BC concentrations in the surface air in winter and summer are calculated from its interannual variations due to differences in air mass circulation, as well as from spatial and interannual variations in BC emissions from wildfires.
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