Effect of Atmospheric Circulation on the Seasonal Dynamics of the Chemical Composition of the Snow Cover in the Pechora–Ilych Reserve

— The layer-by-layer analysis of the variation dynamics of chemical parameters of snow at one of the observation sites (at the village of Yaksha) in the Pechora–Ilych state biosphere reserve in the winter of 2019–2020 has shown that the chemical composition of atmospheric precipitation is affected d...

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Bibliographic Details
Published in:Geochemistry international 2024-04, Vol.62 (4), p.434-445
Main Authors: Vasilevich, M. I., Smirnov, N. S.
Format: Article
Language:English
Subjects:
Air masses
Atmospheric circulation
Atmospheric precipitations
Biosphere
Chemical composition
Chemical precipitation
Earth and Environmental Science
Earth Sciences
Geochemistry
Mathematical analysis
Precipitation
Seasonal variations
Snow
Snow cover
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Summary:— The layer-by-layer analysis of the variation dynamics of chemical parameters of snow at one of the observation sites (at the village of Yaksha) in the Pechora–Ilych state biosphere reserve in the winter of 2019–2020 has shown that the chemical composition of atmospheric precipitation is affected dominantly by long-range material transport. Features of the atmospheric circulation and the regions from which air masses are transferred control the saturation of the precipitation with certain chemical components. The calculation of the trajectories of reverse transport of air masses allowed us to identify regions where the air masses can be formed that come to the study area and carry material that potentially affects the chemical composition of the precipitation. The calculation of trajectories is demonstrated to make it possible to identify source regions of pollutants entering the atmosphere. This method of studying the chemical composition of snow is generally very informative and enables better understanding its formation factors.
ISSN:0016-7029
1556-1968
DOI:10.1134/S0016702923700179