Half-day and four-day waves in the statosphere

Details Half-day and four-day waves in the statosphere Half-day and four-day waves in the statosphere

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986maph...20...97r&link_type=abstract

In International Council of Scientific Unions, Middle Atmosphere Program. Handbook for MAP, Vol. 20 2 p (SEE N87-10419 01-42)

Mathematics

Logic

Planetary Waves, Stratosphere, Synoptic Meteorology, Troposphere, Wave Propagation, Amplitudes, Oscillations, Wind (Meteorology)

Scientific paper

Further analysis of spaced-antenna measurements of 3-dimensional velocity in the stratosphere was performed over a period of 10 days and compared with meteorological observations. A quasi-four-day wave in the lower stratosphere can be shown to originate in planetary wave/synoptic scale disturbances in the troposphere. Its phase propagates downwards and its amplitude decreases strongly with height in the lower stratosphere. The wave features are most pronounced in the meridional wind component, but they show up also in the vertical component. A 12-h oscillation with downward phase progression and about 1.5 ms-1 velocity amplitude is also detected in the meridional component above 18 km, but there is no comparable feature seen in the troposphere.

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