Details

Autor(en) / Beteiligte

• Martynova, Yu. V.
• Krupchatnikov, V. N.
• Gochakov, A. V.
• Antokhina, O. Yu

Titel

Relationship between Anomalies of the Rate of Snow Cover Formation in Western Siberia and Atmospheric Dynamics in the Northern Hemisphere in the Autumn–Winter Season

Ist Teil von

• Izvestiya. Atmospheric and oceanic physics, 2022-02, Vol.58 (1), p.95-109

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The relationship between the anomalies of the intensity of snow cover formation in Western Siberia (WS) and thermodynamic state of the atmosphere of both the WS sector and the entire Northern Hemisphere in the autumn–winter season is considered based on the data of satellite observations of the extent of the NOAA snow cover data and the ERA-Interim reanalysis data. The study is based on a comparison of two composites differing in the intensity of snow cover formation in WS. Differences in the behavior of both the instability characteristics of the atmosphere (wave action and baroclinicity) and standard meteorological variables (temperature, pressure, and geopotential height) are analyzed. It is found that the anomalies in the formation of snow cover in WS are more likely a consequence of the anomalies in the atmosphere at midlatitudes and arctic latitudes of the Northern Hemisphere that had existed before the beginning of this process. At the same time, it is possible that the anomalously rapid formation of the snow cover may further contribute to the wave activity in the atmosphere according to the feedback principle. However, this impact is not long-lasting and does not cause new long-lasting disturbances in the atmosphere.