ИСТИНА

Aerosols in Northern Siberia and high altitude Arctic are found to be originated from natural marine and biogenic sources as well as influenced by regional pollution from the continent. Carbon fractions, functionalities, ions, and elements are associated to marine, biogenic, and continental sources. At HMO Tiksi EBC time series analysis during two years of observations indicates that EBC concentrations undergo the frequent variations imposed upon the seasonal trends. BC pollution episodes are differentiated through increased EBC and sulfates, related to gas flaring, industrial and residential emissions transported from Western Siberia while the increase of carbonyls, hydroxyl, and aromatic indicate emissions sources from Yakutia and Tiksi urban area. Arctic Haze aerosols are characterized by increased concentrations of SO42- in comparison with OC, much higher abundance of oxygenated compounds with respect to alkanes of anthropogenic origin indicating that not only mass concentrations are enhanced within the Arctic troposphere but also aerosol chemistry is changing under long-range air mass transportation from low latitudes. In summer and autumn rich organic chemistry indicates impacts of biogenic, local urban, and shipping sources as well as secondary aerosol formation influenced by emissions from low latitude Siberia. At Cape Baranova it is occurred to catch the plumes transported from industrialized regions of Siberia thus proving that anthropogenic sources, probably gas flaring, pollute high altitude Arctic.