Influence of the upper atmosphere inhomogeneity on acoustic gravity wave propagation

2012 ◽  
Vol 18 (4(77)) ◽  
pp. 30-36 ◽  
Author(s):  
Y.I. Kryuchkov ◽  
◽  
O.K. Cheremnykh ◽  
A.K. Fedorenko ◽  
◽  
...  
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Upper Atmosphere ◽  
Acoustic Gravity Wave

Acoustic gravity wave propagation past the antipode

1974 ◽  
Vol 55 (S1) ◽  
pp. S75-S75
Author(s):  
Wayne A. Kinney ◽  
Christopher Y. Kapper ◽  
Allan D. Pierce
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Acoustic Gravity Wave

scholarly journals Simulation of non-hydrostatic gravity wave propagation in the upper atmosphere

2014 ◽  
Vol 32 (4) ◽  
pp. 443-447 ◽  
Author(s):  
Y. Deng ◽  
A. J. Ridley
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
High Frequency ◽  
General Circulation ◽  
Low Frequency ◽  
Circulation Model ◽  
Horizontal Resolution ◽  
Upper Atmosphere ◽  
Cutoff Wavelength ◽  
Frequency Wave

Abstract. The high-frequency and small horizontal scale gravity waves may be reflected and ducted in non-hydrostatic simulations, but usually propagate vertically in hydrostatic models. To examine gravity wave propagation, a preliminary study has been conducted with a global ionosphere–thermosphere model (GITM), which is a non-hydrostatic general circulation model for the upper atmosphere. GITM has been run regionally with a horizontal resolution of 0.2° long × 0.2° lat to resolve the gravity wave with wavelength of 250 km. A cosine wave oscillation with amplitude of 30 m s−1 has been applied to the zonal wind at the low boundary, and both high-frequency and low-frequency waves have been tested. In the high-frequency case, the gravity wave stays below 200 km, which indicates that the wave is reflected or ducted in propagation. The results are consistent with the theoretical analysis from the dispersion relationship when the wavelength is larger than the cutoff wavelength for the non-hydrostatic situation. However, the low-frequency wave propagates to the high altitudes during the whole simulation period, and the amplitude increases with height. This study shows that the non-hydrostatic model successfully reproduces the high-frequency gravity wave dissipation.

Disturbances of the upper atmosphere and ionosphere caused by acoustic-gravity wave sources in the lower atmosphere

2016 ◽  
Vol 10 (1) ◽  
pp. 127-132 ◽  
Author(s):  
I. V. Karpov ◽  
S. P. Kshevetsky ◽  
O. P. Borchevkina ◽  
A. V. Radievsky ◽  
A. I. Karpov
Keyword(s):  
Gravity Wave ◽  
Upper Atmosphere ◽  
Lower Atmosphere ◽  
Acoustic Gravity Wave

Acoustic-gravity wave propagation in an atmosphere with two sound channels

1963 ◽  
Vol 55 (1) ◽  
pp. 175-199 ◽  
Author(s):  
Richard L. Pfeffer ◽  
James Zarichny
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Acoustic Gravity Wave
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