Atmospheric waves transport momentum, which is fed back into the background flow as the wave dissipates.
atmospheric wave"Generally, any pattern with some roughly identifiable periodicity in time and/ or space. In atmospheric dynamics, waves may be of acoustic, gravity, or Rossby type.
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Atmospheric Wave - Any pattern with some roughly identifiable periodicity in time and/or space. In meteorology, waves in the horizontal flow pattern (e.g., Rossby wave, long wave, short wave).
In meteorology, this applies to atmospheric waves, such as long waves, short waves, Rossby waves, and cyclonic waves. In oceanography, this applies to waves generated by mechanical means, such as currents, turbidity, and the wind.
Sometimes, particularly in discussions of atmospheric waves embedded in the westerlies, a ridge line is considered to be a line drawn through all points at which the anticyclonically curved isobars or contour lines are tangent to a latitude circle.
The second source for thunderstorms that can create hurricanes are from eastward moving atmospheric waves, called easterly waves. Easterly waves are similar to waves in the mid-latitudes, except they are in the easterly trade-flow.
STANDING WAVE An atmospheric wave that is stationary with respect to the medium in which it is embedded. Related term: mountain wave ...
In meterology, the term is used in relation to atmospheric waves or pressure systems. When meterologists say that a pattern will retrograde, they mean that the troughs and ridges will end up further west than they were previously.
PHASING - The consolidation of two or more atmospheric waves, such as a short wave, into a single wave.
 See also: Surface, Atmosphere, Temperature, Wave, Period
  
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