Geophysical research: article

L. Ingel1,2,3
A. Makosko2,3
1 RPA “Typhoon”
2 Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
3 Interdepartment Center of Analytical Research in Physics, Chemistry and Biology at the Presidium of the Russian Academy of Sciences
Journal: Geophysical research
Tome: 20
Number: 3
Year: 2019
Pages: 36-44
UDK: 532.51: 551.511.3: 551.513: 551.558
DOI: 10.21455/gr2019.3-3
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Keywords: mesoscale atmospheric flows, thermal inhomogeneities of the underlying surface, inhomogeneities of the gravitational field, linear disturbances, analytical model
Аnnotation: In a number of previous papers by the authors, it has been shown that inhomogeneities of gravity field can, generally speaking, affect the wind field, leading to the occurrence of currents in the atmosphere. In this paper, the authors compare linear stationary models of mesoscale flows associated with thermal inhomogeneities of the underlying surface and with inhomogeneities of gravity field. For both types of problems, linear perturbations are considered in a stably stratified semi-bounded volume of a medium rotating around a vertical axis. The Boussinesq approximation is used; it is assumed that the medium density depends linearly on the perturbations of the potential temperature. The defining parameters of the problems under consideration are analogues of the Rayleigh and Taylor numbers: R = N