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  2. Rossby wave - Wikipedia

    en.wikipedia.org/wiki/Rossby_wave

    Barotropic Rossby waves do not vary in the vertical [clarification needed], and have the fastest propagation speeds. The baroclinic wave modes, on the other hand, do vary in the vertical. They are also slower, with speeds of only a few centimeters per second or less. [5] Most investigations of Rossby waves have been done on those in Earth's ...

  3. Jet stream - Wikipedia

    en.wikipedia.org/wiki/Jet_stream

    Each large meander, or wave, within the jet stream is known as a Rossby wave (planetary wave). Rossby waves are caused by changes in the Coriolis effect with latitude. [26] Shortwave troughs, are smaller scale waves superimposed on the Rossby waves, with a scale of 1,000 to 4,000 kilometres (600–2,500 mi) long, [27] that move along through ...

  4. Atmospheric circulation - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_circulation

    The outflow of air mass from the cell creates harmonic waves in the atmosphere known as Rossby waves. These ultra-long waves determine the path of the polar jet stream, which travels within the transitional zone between the tropopause and the Ferrel cell. By acting as a heat sink, the polar cell moves the abundant heat from the equator toward ...

  5. Equatorial Rossby wave - Wikipedia

    en.wikipedia.org/wiki/Equatorial_Rossby_wave

    For very long waves (as the zonal wavenumber approaches zero), the non-dispersive phase speed is approximately: / = / (+), which indicates that these long equatorial Rossby waves move in the opposite direction (westward) of Kelvin waves (which move eastward) with speeds reduced by factors of 3, 5, 7, etc.

  6. Eddy (fluid dynamics) - Wikipedia

    en.wikipedia.org/wiki/Eddy_(fluid_dynamics)

    However, there are other types of eddies that are not simple vortices. For example, a Rossby wave is an eddy [3] which is an undulation that is a deviation from mean flow, but does not have the local closed streamlines of a vortex.

  7. Equatorial Counter Current - Wikipedia

    en.wikipedia.org/wiki/Equatorial_Counter_Current

    This is a result of the annual Rossby wave. [13] Early each year increased winds in the eastern Pacific generate a region of lower sea level. Over the following months this propagates westward as an oceanic Rossby wave. Its fastest component, near 6°N, reaches the western Pacific around mid-summer. At higher latitudes the wave travels more slowly.

  8. Zonal wavenumber - Wikipedia

    en.wikipedia.org/wiki/Zonal_wavenumber

    500mb geopotential height averaged between October 9–21, 2010 illustrating Rossby wave pattern with the zonal wavenumber 4. DOE AMIP reanalysis data.. In meteorological applications, a zonal wavenumber or hemispheric wavenumber is the dimensionless number of wavelengths fitting within a full circle around the globe at a given latitude: [1]

  9. Brewer–Dobson circulation - Wikipedia

    en.wikipedia.org/wiki/Brewer–Dobson_circulation

    Brewer–Dobson circulation is driven by planetary scale atmospheric waves, namely Rossby waves, with results in westward drag and therefore poleward pumping action to conserve angular momentum. [ 1 ]