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- W4200005686 abstract "High-resolution numerical simulations of non-stationary nonlinear acoustic-gravity waves (AGWs) propagating upwards from surface wave sources are performed for different temporal intervals relative to activation/deactivation times of the wave forcing. After activating surface wave sources, amplitudes of AGW spectral components reach a quasi-stationary state. Then the surface wave forcing is deactivated in the numerical model, and amplitudes of vertically traveling AGW modes quickly decrease at all altitudes due to discontinuations of the upward propagation of wave energy from the wave sources. However, later the standard deviation of residual and secondary wave perturbations experiences slower quasi-exponential decrease. High-resolution simulations allowed, for the first time, estimating the decay times of this wave noise produced by slow residual, quasi-standing and secondary AGW spectral components, which vary between 20 and 100 hrs depending on altitude and the rate of wave source activation/deactivation. The standard deviations of the wave noise are larger for the case of sharp activation/deactivation of the wave forcing compared to the steep processes. These results show that transient wave sources may create long-lived wave perturbations, which can form a background level of wave noise in the atmosphere. This should be taken into account in parameterizations of atmospheric AGW impacts." @default.
- W4200005686 created "2021-12-31" @default.
- W4200005686 creator A5046269910 @default.
- W4200005686 date "2021-11-29" @default.
- W4200005686 modified "2023-09-29" @default.
- W4200005686 title "Reply on RC1" @default.
- W4200005686 doi "https://doi.org/10.5194/acp-2021-824-ac2" @default.
- W4200005686 hasPublicationYear "2021" @default.
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