Propagation to the upper atmosphere of acoustic-gravity waves from atmospheric fronts in the Moscow region

The paper uses experimental data of pressure variations on the Earth's surface during the passage of an atmospheric front recorded by a network of four microbarographs in the Moscow region. Applying these experimental data, empirical approximations of atmospheric pressure field oscillations are...

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Bibliographic Details
Published in:Annales geophysicae (1988) 2019-06, Vol.37 (3), p.447-454
Main Authors: Kurdyaeva, Yuliya, Kulichkov, Sergey, Kshevetskii, Sergey, Borchevkina, Olga, Golikova, Elena
Format: Article
Language:English
Subjects:
Acoustic gravity waves
Acoustic propagation
Acoustics
Amplitude
Amplitudes
Atmosphere
Atmospheric fronts
Atmospheric pressure
Boundary conditions
Disturbances
Earth
Earth surface
Experimental data
Fronts
Gravitational waves
Gravity waves
Lower troposphere
Microbarographs
Oscillations
Pressure
Pressure field
Pressure fluctuations
Pressure variations
Surface pressure
Temperature
Temperature effects
Troposphere
Upper atmosphere
Wave propagation
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Summary:The paper uses experimental data of pressure variations on the Earth's surface during the passage of an atmospheric front recorded by a network of four microbarographs in the Moscow region. Applying these experimental data, empirical approximations of atmospheric pressure field oscillations are suggested. The obtained approximating surface pressure functions are used as the lower boundary condition for simulating the vertical propagation of acoustic-gravity waves from a source in the lower troposphere. Estimates of the amplitude of temperature disturbances in the upper atmosphere caused by acoustic-gravity waves from a propagating atmospheric front are obtained. For the amplitude of wave temperature disturbances, values of about 200 K are obtained. The amplitude of temperature disturbances in the upper atmosphere caused by background pressure fluctuations on the Earth's surface is estimated at 4–5 K.
ISSN:1432-0576
0992-7689
1432-0576
DOI:10.5194/angeo-37-447-2019