Self-Acceleration and Instability of Gravity Wave Packets 3. Three-Dimensional Packet Propagation, Secondary Gravity Waves, Momentum Transport, and Transient Mean Forcing in Tidal Winds

Self-Acceleration and Instability of Gravity Wave Packets : 3. Three-Dimensional Packet Propagation, Secondary Gravity Waves, Momentum Transport, and Transient Mean Forcing in Tidal Winds

©2019. The Authors.

Bibliographische Detailangaben
Veröffentlicht in:Journal of geophysical research. Atmospheres : JGR. - 1998. - 125(2020), 3 vom: 16. Feb., Seite e2019JD030692
1. Verfasser: Fritts, David C (VerfasserIn)
Weitere Verfasser: Dong, Wenjun, Lund, Thomas S, Wieland, Scott, Laughman, Brian
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Journal of geophysical research. Atmospheres : JGR
Schlagworte:Journal Article gravity wave instability dynamics gravity wave momentum fluxes gravity wave self‐acceleration nonlinear gravity waves secondary gravity waves
Beschreibung
Zusammenfassung:©2019. The Authors.
Dong et al. (2020, https://doi.org/10.1029/2019JD030691) employed a new compressible model to examine gravity wave (GW) self-acceleration dynamics, instabilities, secondary gravity wave (SGW) generation, and mean forcing for GW packets localized in two dimensions (2D). This paper extends the exploration of self-acceleration dynamics to a GW packet localized in three dimensions (3D) propagating into tidal winds in the mesosphere and thermosphere. As in the 2D packet responses, 3D GW self-acceleration dynamics are found to be significant and include 3D GW phase distortions, stalled GW vertical propagation, local instabilities, and SGW and acoustic wave generation. Additional 3D responses described here include refraction by tidal winds, localized 3D instabilities, asymmetric SGW propagation, reduced SGW and acoustic wave responses at higher altitudes relative to 2D responses, and forcing of transient, large-scale, 3D mean responses that may have implications for chemical and microphysical processes operating on longer time scales
Beschreibung:Date Revised 29.03.2024
published: Print-Electronic
figshare: 10.6084/m9.figshare.9559817.v1
Citation Status PubMed-not-MEDLINE
ISSN:2169-897X
DOI:10.1029/2019JD030692