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12 November 2020 Seasonal and interannual variations in atmospheric aerosol optical depth during 2011-2019 in Barentsburg, Spitsbergen
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Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115602J (2020) https://doi.org/10.1117/12.2572691
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation
Abstract
We discuss the results from analysis of seasonal and interannual variations in aerosol optical depth (AOD) of the atmosphere, using observations in 2011-2019 at the polar station Barentsburg (Spitsbergen Archipelago). The multiyear average values had been 0.091 for АОD (0.5 µm) and 1.28 for Ångström exponent. Fine-mode aerosol makes the major contribution (77%) to AOD and its variations. Summertime AOD maximum in July-August developed in the seasonal behavior in addition to springtime maximum. The summertime maximum is attributed to outflows, more frequent in recent years, of smokes from forest fires in boreal zone to the Arctic atmosphere. The interannual variations in AOD are, too, mainly determined by the frequency and intensity of outflows of smoke aerosol. The annually average values of AOD (0.5 μm) varied from 0.069 in 2013 to 0.116 in 2019.
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Sergey M. Sakerin, Dmitry M. Kabanov, Ivan A. Kruglinsky, Konstantin E. Lubo-Lesnichenko, Vladimir F. Radionov, and Olga R. Sidorova "Seasonal and interannual variations in atmospheric aerosol optical depth during 2011-2019 in Barentsburg, Spitsbergen", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115602J (12 November 2020); https://doi.org/10.1117/12.2572691
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