NONLINEAR PLANETARY TIDAL-WAVE INTERACTIONS IN THE LOWER THERMOSPHEREOBSERVED BY METEOR RADAR

Authors
MITCHELL NJ WILLIAMS PJS BEARD AG BUESNEL GR MULLER HG
Citation
Nj. Mitchell et al., NONLINEAR PLANETARY TIDAL-WAVE INTERACTIONS IN THE LOWER THERMOSPHEREOBSERVED BY METEOR RADAR, Annales geophysicae, 14(3), 1996, pp. 364-366
Citations number
6
Categorie Soggetti
Astronomy & Astrophysics","Geosciences, Interdisciplinary","Metereology & Atmospheric Sciences
Journal title
Annales geophysicae → ACNP
ISSN journal
09927689
Volume
14
Issue
3
Year of publication
1996
Pages
364 - 366
Database
ISI
SICI code
0992-7689(1996)14:3<364:NPTIIT>2.0.ZU;2-V
Abstract
Meteor-radar observation of neutral winds in the lower thermosphere ne ar Sheffield (52.5(0)N, 2.0(0)W) have been used to investigate the sho rt-term variability of the amplitude of the semidiurnal tide. Consider able variability is found on time scales of about 2-15 days, similar t o the periods associated with planetary waves. Modulation of the tidal amplitudes with a period near two days is demonstrated for two episod es in 1992. In both of these cases there is coincident planetary-wave activity of similar period suggesting a non-linear wave-wave interacti on is responsible.