Internal gravity waves from atmospheric jets and fronts

R Plougonven, F Zhang - Reviews of Geophysics, 2014 - Wiley Online Library
For several decades, jets and fronts have been known from observations to be significant
sources of internal gravity waves in the atmosphere. Motivations to investigate these waves …

Balance and spontaneous wave generation in geophysical flows

J Vanneste - Annual Review of Fluid Mechanics, 2013 - annualreviews.org
The large-scale dynamics of the mid-latitude atmosphere and ocean is characterized by a
timescale separation between slow balanced motion and fast inertia-gravity waves. As a …

[HTML][HTML] Inertia–gravity waves emitted from balanced flow: Observations, properties, and consequences

PD Williams, TWN Haine… - Journal of the atmospheric …, 2008 - journals.ametsoc.org
Inertia–Gravity Waves Emitted from Balanced Flow: Observations, Properties, and
Consequences in: Journal of the Atmospheric Sciences Volume 65 Issue 11 (2008) Jump to …

Optimal potential vorticity balance of geophysical flows

Á Viúdez, DG Dritschel - Journal of Fluid Mechanics, 2004 - cambridge.org
A method to decompose geophysical flows into a balanced flow (defined by its potential
vorticity, PV) and an imbalanced component (inertia–gravity waves, IGWs) is introduced. The …

[HTML][HTML] The emergence of fast oscillations in a reduced primitive equation model and its implications for closure theories

MD Chekroun, H Liu, JC McWilliams - Computers & Fluids, 2017 - Elsevier
The problem of emergence of fast gravity-wave oscillations in rotating, stratified flow is
reconsidered. Fast inertia-gravity oscillations have long been considered an impediment to …

Spontaneous inertia‐gravity wave emission from a nonlinear critical layer in the stratosphere

I Polichtchouk, RK Scott - Quarterly Journal of the Royal …, 2020 - Wiley Online Library
Using a nonlinear global primitive equation model, spontaneous inertia‐gravity wave (IGW)
emission is investigated in an idealized representation of the stratospheric polar night. It is …

Case studies of nonorographic gravity waves over the Southern Ocean emphasize the role of moisture

R Plougonven, A Hertzog… - Journal of Geophysical …, 2015 - Wiley Online Library
Two case studies of nonorographic gravity waves are carried out for wave events that
occurred over the Southern Ocean in November 2005. Mesoscale simulations were carried …

Exponential smallness of inertia–gravity wave generation at small Rossby number

J Vanneste - Journal of the atmospheric sciences, 2008 - journals.ametsoc.org
This paper discusses some of the mechanisms whereby fast inertia–gravity waves can be
generated spontaneously by slow, balanced atmospheric and oceanic flows. In the small …

Spontaneous generation of inertia–gravity wave packets by balanced geophysical flows

Á Viúdez, DG Dritschel - Journal of Fluid Mechanics, 2006 - cambridge.org
The generation and propagation of a packet of small-amplitude inertia–gravity waves (IGWs)
in a rotating stratified balanced flow is described. The initially balanced geophysical flow is …

Variational asymptotics for rotating shallow water near geostrophy: a transformational approach

M Oliver - Journal of Fluid Mechanics, 2006 - cambridge.org
We introduce a unified variational framework in which the classical balance models for
nearly geostrophic shallow water as well as several new models can be derived. Our …