Results 251 to 260 of about 829,957 (291)

On the seasonal cycle of stratospheric planetary waves

pure and applied geophysics, 1989
Quasi-stationary planetary waves exhibit different seasonal behaviour in the two winter stratospheres. Whereas, in a climatological sense, wave amplitudes are large throughout northern winter, in the Southern Hemisphere there is a climatological minimum in midwinter.
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Thermal Equilibration of Planetary Waves

Journal of the Atmospheric Sciences, 1990
Abstract Equilibration of planetary waves toward free-mode forms, steady solutions of the unforced, undamped equations of motion, is studied in a three-level quasi-geostrophic model on the hemisphere. A thermal mechanism is invoked, parameterized as a Newtonian process Q = −γ(T − T*), relaxing the atmosphere toward a radiative-convective equilibrium ...
John Marshall, Damon W. K. So
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The stability of planetary waves on a sphere

Journal of Fluid Mechanics, 1976
The stability of individual inviscid barotropic planetary waves and zonal flow on a sphere to small disturbances is examined by means of numerical solution of the algebraic eigenvalue problem arising from the spectral form of the governing equations. It is shown that waves with total wavenumber n (the lower index of the Legendre function P m
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Traveling planetary waves in the stratosphere

pure and applied geophysics, 1980
This paper reviews the theory and observations of some traveling planetary waves in the stratosphere. Two categories of waves which appear prominently in the literature are discussed: westward propagating waves of periods in the range 3–7 days (the ‘5-day wave’) and in the range 10–20 days (the ‘16-day wave’). Although the observations seem to indicate
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Planetary waves in a polar ocean

2011
The dynamics of the Arctic ocean are studied on a polar projection of the sphere. The density structure is idealized as a two-layer system, and a general formulation is developed which allows inclusion of latitudinal and longitudinal depth variations as well as asymmetries in the boundaries of the ocean.
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Planetary Waves and Zonal Asymmetries

2017
PLANETARY WAVES ARE LARGE-SCALE ROSSBY WAVES in which the potential vorticity gradient is provided by differential rotation (i.e., the beta-effect). They are ubiquitous in Earth's atmosphere and almost certainly in other planetary atmospheres. They propagate horizontally over the two Poles, and they propagate vertically into the stratosphere and ...
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Planetary waves

Earth-Science Reviews, 1974
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Planetary waves observed by TIMED/SABER in coupling the stratosphere–mesosphere–lower thermosphere during the winter of 2003/2004: Part 2—Altitude and latitude planetary wave structure

Journal of Atmospheric and Solar-Terrestrial Physics, 2009
B Andonov, D Pancheva, P Mukhtarov
exaly  

Influence of the vertical and zonal propagation of stratospheric planetary waves on tropospheric blockings

Journal of Geophysical Research D: Atmospheres, 2013
Kunihiko Kodera
exaly  

Waves, Planetary

2012
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