Moscow smoke haze in October 2014. Aerosol mass concentration variations
G.I. Gorchakov1, V.M. Kopeikin1, S.A. Sitnov1, E.G. Semoutnikova2, M.A. Sviridenkov1, A.V. Karpov1, E.A. Lezina2, A.S. Emilenko1, A.A. Isakov1, G.A. Kuznetsov1, T.Ya. Ponomareva3
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Pyzhevsky per., 3, 119017, Moscow, Russia
2LomonosovMoscow State University, GSP-1, Leninskie Gory, Moscow, 119991, Russia
3Hydrometeorological Centre of Russia, 11-13, Bol'shoj Predtechenskij per., 123242, Moscow, Russia
Keywords: дымовой аэрозоль, массовая концентрация, эмпирические функции распределения, спектральная плотность мощности, два источника задымления, дальний перенос, smoke aerosol, aerosol mass concentration, empirical distribution function, spectral power, two sources of smoke, long-range transfer
Abstract
Aerosol mass concentration variations in a smoky atmosphere of Moscow region in autumn 2014 have been analyzed. The soot mass fraction and ratio between aerosol mass concentrations PM-2.5 and PM-10 were typical of the fires in boreal forests. Smoke screening of the Moscow region was due to long-range transfer of the smoke aerosol, that was confirmed by a joint analysis of aerospace monitoring data and inverse trajectories of air mass transfer, and local fires in Moscow region. As the result, statistical characteristic variations of the smoke aerosol mass concentrations, including empirical probability distributions and power spectra, turned to be non-typical.
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