Book ChapterDOI
Recent Progress in Gravity Wave Saturation Studies
David C. Fritts
- pp 31-46
TLDR
In this paper, a brief survey of advances made during the last three years in understanding gravity wave saturation as well as their effects and variability in the lower and middle atmosphere is presented.Abstract:
This paper will present a brief survey of some of the advances made during the last three years in understanding gravity wave saturation as well as their effects and variability in the lower and middle atmosphere. Our emphasis will be on observational results, though theoretical and modeling studies will be discussed where relevant. We will first present recent evidence of the processes contributing to wave saturation. We will also examine the implications of wave saturation and local turbulence production for wave fluxes of energy and momentum, the turbulent diffusion of heat and constituents, and a saturated spectrum of gravity waves throughout the atmosphere. Finally, some of the recent evidence of geographic and temporal variability of the gravity wave field and of the processes that may contribute to this variability will be reviewed.read more
Citations
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Journal ArticleDOI
Dissipative wave-mean interactions and the transport of vorticity or potential vorticity
Michael E. McIntyre,W. A. Norton +1 more
TL;DR: In this paper, a general way of characterizing what is meant by the classical, dissipative type of wave-induced mean motion is to say that the waveinduced mean motions are balanced motions, in a sense to be discussed, and that the effective mean force corresponds to the potential vorticity transport that results from wave dissipation.
Book ChapterDOI
Dynamics and Tracer Transport in the Middle Atmosphere: An Overview of Some Recent Developments
TL;DR: In this paper, the authors present an understanding of dynamics and tracer transport in the middle atmosphere, and of the concepts needed for modelling them, discussed in the light of recent developments.
References
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Journal ArticleDOI
Turbulence and stress owing to gravity wave and tidal breakdown
TL;DR: In this article, the effects of mean winds and gravity waves on the mean momentum budget were investigated and it was shown that the existence of critical levels in the mesosphere significantly limits the ability of gravity waves to generate turbulence.
Journal ArticleDOI
Internal atmospheric gravity waves at ionospheric heights
TL;DR: In this paper, the proper interpretation of irregular motions in the upper atmosphere has been investigated by a variety of techniques, but their proper interpretation has yet to be established. But their proper meaning has not yet been established.
Journal ArticleDOI
Space-Time Scales of Internal Waves' A Progress Report
Chris Garrett,Walter Munk +1 more
TL;DR: In this article, a revised model for the distribution of internal wave energy in wave number frequency space is presented, guided by the following measurements: moored spectra and moored coherences for horizontal and vertical separations.
Journal ArticleDOI
Space-Time scales of internal waves
Chris Garrett,Walter Munk +1 more
TL;DR: In this paper, a model E(α, ω) α μ−1ω−p+1(ω 2−ω i 2)−++ for the distribution of internal wave energy in horizontal wavenumber, frequency-space, with wavenumbers α extending to some upper limit μ(ω) α ω r-1 (ω 2 −ω i 1 2)½, and frequency ω extending from the inertial frequency i to the local Vaisala frequency n(y).
Journal ArticleDOI
Alleviation of a systematic westerly bias in general circulation and numerical weather prediction models through an orographic gravity wave drag parametrization
TL;DR: In this paper, the failure to parametrize subgrid-scale orographic gravity wave drag may account for the westerly biases in the northern hemisphere wintertime flow of the Meteorological Office 15-layer operational model and 11-layer general circulation model.