Simulation of Propagation of Acoustic-Gravity Waves Generated by Tropospheric Front Instabilities into the Upper Atmosphere

Кшевецкий, С. П.; Kurdyaeva, Yuliya; Kulichkov, S. N.; Golikova, E. V.; Borchevkina, O. P.; Гаврилов, Н. М.

doi:10.1007/s00024-020-02569-y

Cited by 6 publications

(3 citation statements)

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“…In this work, a mathematical formulation of the problem of waves propagation in the atmosphere initiated by pressure fluctuations associated with meteorological processes on the lower boundary of the region of integration of equations has been formulated, and its correctness has been proved. The results of numerical calculations on modeling atmospheric disturbances during the passage of a meteorological front using the observed data of surface pressure variations showed reasonable agreement with the observational data [64,65].…”

Section: Numerical Simulationsupporting

confidence: 70%

“…The maximum amplitude intensity changes in the scattered signal correspond to the amplitudes of pressure variations from 780 Pa on 1 April 2016, in Kaliningrad. The applied procedure contains inaccuracy in determining the amplitude values of pressure variations, so the amplitude variations of pressure during the passage of meteorological fronts described, for example, in [65,82], differ from those obtained in the calculations for the investigated storm. We assume that the inaccuracy in determining the amplitude does not affect the frequency characteristics of disturbances in the surface atmosphere.…”

Section: Numerical Simulationmentioning

confidence: 99%

“…One possible solution to this problem would be using observational data of atmospheric parameters during the focused period. For example, in [64,65], the correctness of the mathematical model of AWs propagation from the lower atmosphere upward using the observed pressure variations on the surface as boundary conditions was justified. A correct description has also approved the accuracy of the numerical model of atmospheric disturbances during the passage of the atmospheric front over the Moscow region.…”

Section: Introductionmentioning

confidence: 99%

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Disturbances of the Thermosphere and the Ionosphere during a Meteorological Storm

et al. 2021

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Determination of the physical mechanisms of energy transfer of tropospheric disturbances to the ionosphere is one of the fundamental problems of atmospheric physics. This article presents the results of observations carried out using two-wavelength lidar sensing at tropospheric altitudes and satellite GPS measurements during a meteorological storm in Kaliningrad (Russia, 54.7° N, 20.5° E) on 1 April 2016. During lidar sensing, it was found that the amplitudes of variations in atmospheric parameters with periods of acoustic (AWs) and internal gravity (IGWs) waves significantly increased. As a result of numerical modeling using the AtmoSym software package, it was shown that there is a noticeable increase in the period of temperature disturbances from 6–12 min to 10–17 min at altitudes from 150 km up to 230 km during the vertical propagation of acoustic waves and internal gravity waves from the troposphere. Nonlinear and dissipative processes in this layer lead to the formation of sources of secondary waves in the thermosphere with periods longer than those of primary ones. In this case, the unsteady nature of the wave source and the short duration of its operation does not lead to significant heating of the thermosphere. Simultaneous satellite observations demonstrate the response of the ionosphere (total electron content (TEC) disturbance) to tropospheric disturbances. Analysis of the time series of the amplitudes of the reflected lidar signal and TEC made it possible to determine that the response time of the ionosphere to tropospheric disturbances is 30–40 min.

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Section: Numerical Simulationsupporting

confidence: 70%

Section: Numerical Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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