The occurrence of internal gravity waves and volumetric acoustic oscillations in the atmosphere

TL;DR

This paper investigates atmospheric wave processes, proposing that volumetric acoustic oscillations may occur alongside or instead of internal gravity waves, especially under stable weather conditions, due to acoustic resonator formation.

Contribution

It introduces the hypothesis that volumetric acoustic oscillations can be generated in the atmosphere without sharp parameter changes, challenging the exclusive focus on internal gravity waves.

Findings

Detection of oscillatory movements during good weather

High probability of acoustic oscillation formation without atmospheric disturbances

Proposed acoustic resonator as an alternative wave generation mechanism

Abstract

Mesoscale wave processes are a transport mechanism for the energy exchange between the troposphere and stratosphere, since the tropopause blocks such an exchange. It is believed that internal gravity waves (IGW) are the main wave process in the atmosphere. However, the explanation of the process of IGW occurrence cannot be considered sufficiently substantiated, because the reasons for the appearance of the selected air parcel, which is affected by the initial disturbance, are not yet clear. The data of the performed experiments on the detection of wave processes shows the presence of noticeable oscillatory movements not only during the passage of fronts or other disturbances, but also in good weather. As an alternative to IGW, I consider a possible process of generating volumetric acoustic oscillations due to the formation of an acoustic resonator in the atmosphere. The probability of formation of such oscillations is high, because they do not require the presence of sharp changes in the parameters of the atmosphere to appear.