The circulation features of the formation of cold and warm winters in the Northern Hemisphere (for the example of Belarus)
Abstract
Ordered long-term advection of air from one latitudinal and longitudinal zones to neighboring ones is the main factor in the occurrence of long-term climatic anomalies. A prerequisite for this is the stability of the processes of general atmospheric circulation.
The aim of the work is to establish the relationship between atmospheric pressure and climatic anomalies using NCEP/NCAR Reanalysis 1 data of geopotential values on an isobaric surface of 1000 hPa and dates of severe and warm winters. As an indicator of geopotential variability, the values of standard deviations of geopotential values for each of the winter months of the year were used.
The emphasis in the work is on studying these changes in geopotential deviations in various latitudinal and longitudinal zones. On this basis, an analysis of the spatiotemporal variability of the geopotential on the isobaric surface of 1000 hPa in the winter months was carried out, and the maximum gradients of the geopotential 1000 hPa ‘subtropics – temperate and subpolar latitudes’ were determined for the period from 1949 to 2021. These gradients have a clear physical meaning and determine, in fact, the intensity of westerly transport of air masses in mid-latitudes and the severity of winters in the Atlantic-European sector of the Northern Hemisphere.
About the Authors
V. F. Loginov
Institute of Nature Management of the National academy of Sciences of Belarus
Belarus
Belarus
Vladimir F. Loginov – Academician, D. Sc. (Geography),
Chief Researcher
10, F. Skoriny Str., 220076, Minsk
V. S. Mikutsky
Institute of Nature Management of the National Academy of Sciences of Belarus
Belarus
Belarus
Vladimir S. Mikutsky – Ph. D. (Physical and Mathematical), Leading Researcher
10, F. Skoriny Str., 220076, Minsk
References
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Review
For citations:
Loginov V.F., Mikutsky V.S. The circulation features of the formation of cold and warm winters in the Northern Hemisphere (for the example of Belarus). Nature Management. 2023;(2):5-12. (In Russ.)
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