Dynamics of the upper middle atmosphere (80-110 km) at Tromso (70 deg N) and Saskatoon (52 deg N), June-December 1987, using the Tromso and Saskatoon MF radars

Details Dynamics of the upper middle atmosphere (80-110 km) at Tromso (70 deg N) and Saskatoon (52 deg N), June-December 1987, using the Tromso and Saskatoon MF radars Dynamics of the upper middle atmosphere (80-110 km) at Tromso (70 deg N) and Saskatoon (52 deg N), June-December 1987, using the Tromso and Saskatoon MF radars

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jatp...52..971m&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 52, Oct.-Nov. 1990, p. 971-980. Research supported by NSER

Physics

6

Atmospheric Circulation, Middle Atmosphere, Radar Data, Radar Measurement, Wind Measurement, Diurnal Variations, Gravity Waves, Norway, Wind Shear

Scientific paper

A real-time-winds system from Saskatoon operated with the medium-frequency (partial reflection) radar system on a continuous basis in the period June-December 1987. This interval includes MAC/SINE and EPSILON. Profiles with 3-km resolution were obtained every 5 min. Daily mean winds, diurnal and semidiurnal tidal characteristics (amplitudes, phases, and wavelengths), and gravity-wave characteristics (intensities and mean directions) are available throughout this interval. This is particularly valuable in defining the background state for some experiments, e.g., rockets, and for comparison with related parameters form the lidar and other radars. The following comparisons with these dynamical parameters from Saskatoon (52 deg N) are made: the zonal circulation was weaker at Tromso, tidal amplitudes smaller, and summer 12-h tidal wavelengths shorter. The fall transition for this tide occurred in September at Tromso, earlier than observed elsewhere.

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