Long period (about 8-20 h) wind oscillations in the upper middle atmosphere at Saskatoon (55 deg N) - Evidence for non-linear tidal effects

Details Long period (about 8-20 h) wind oscillations in the upper middle atmosphere at Saskatoon (55 deg N) - Evidence for non-linear tidal effects Long period (about 8-20 h) wind oscillations in the upper middle atmosphere at Saskatoon (55 deg N) - Evidence for non-linear tidal effects

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38.1431m&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, Nov. 1990, p. 1431-1441. Research supported by NSERC, Department of the E

Physics

47

Atmospheric Tides, Diurnal Variations, Gravity Waves, Middle Atmosphere, Spectral Methods, Wind Measurement, Covariance, Harmonic Analysis, Multispectral Radar, Radar Measurement, Wave Propagation

Scientific paper

Winds measured by the Saskatoon MF radar (2.2 MHz) have been used to study atmospheric oscillations of periods greater than 1 h (e.g., inertiogravity waves). Perturbations in the wind field are found by subtracting the mean day of the interval studied (6-11 days) from each day to form difference plots. In summer, below about 90 km, the oscillations (10-20 m/s) are extremely regular and coherent with height and time. Inspection of the difference plots and spectral and harmonic analysis show these to be of 16 h period with lambda(z) of about 10 km. It is probable that these are due to nonlinear mixing of the 2-day wave and 12-h tide. In winter months, the oscillations are smaller and less regular, consistent with the superposition of waves of periods 8-20 h.

Affiliated with

Also associated with

No associations

Rating

Long period (about 8-20 h) wind oscillations in the upper middle atmosphere at Saskatoon (55 deg N) - Evidence for non-linear tidal effects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Long period (about 8-20 h) wind oscillations in the upper middle atmosphere at Saskatoon (55 deg N) - Evidence for non-linear tidal effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long period (about 8-20 h) wind oscillations in the upper middle atmosphere at Saskatoon (55 deg N) - Evidence for non-linear tidal effects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-842480