Editing Atmospheric waveguide

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An '''atmospheric waveguide''' is an [[Earth's atmosphere|atmospheric]] [[Fluid dynamics|flow]] feature that improves the propagation of certain [[atmospheric wave]]s.<ref>{{cite journal |last=Chunchuzov |first=Igor P. |title=The Spectrum of High-Frequency Internal Waves in the Atmospheric Waveguide |journal=[[Journal of the Atmospheric Sciences]] |volume=53 |issue=13 |pages=1798–1814 |doi=10.1175/1520-0469(1996)053<1798:TSOHFI>2.0.CO;2 |date=July 1, 1996 |doi-access=free |bibcode=1996JAtS...53.1798C }}</ref>

The effect arises because wave parameters such as [[group velocity]] or vertical [[wavenumber]] depend on [[mean flow]] direction and strength.  Thus, for instance, [[westerlies]] might be a good [[waveguide]] for [[east]]ward-traveling waves, but might strongly [[dissipation|dissipate]] [[west]]ward-traveling waves, by increasing or decreasing their vertical wavenumber, respectively.  Modification of the waves' group velocity will change their [[meridional]] propagation speed, directing them more [[geographical pole|polewards]] or more [[equator]]wards.

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[[Category:Atmosphere]]