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RISThe Influence of Atmospheric Circulation on Mesospheric Electron Densities in Winter
Publisher: American Meteorological Society
Abstract: Mesurements of electron densities in the mesosphere at 43S (Christchurch, N. Z.) have shown that relatively constant values exist in summer, but large variations occur in winter. During the period 21?29 June 1963, isopleths ...
Winds and Wave Motions to 110 km at Mid-Latitudes. II. Mean Winds at 52°N, 1969–73
Publisher: American Meteorological Society
Abstract: The results of radiowave partial reflection wind (drift) observations, 62?116 km, for the years 1969?73, at 52°N, 107°W (Saskatoon), are presented, and are compared with current empirical models. Agreement is satisfactory ...
Winds and Wave Motions to 110 km at Mid-Latitudes. III. Response of Mesospheric and Thermospheric Winds to Major Stratospheric Warmings
Publisher: American Meteorological Society
Abstract: The behavior of winds at 52°N, 107°W (Saskatoon, Canada) at altitudes to ?110 km during major stratospheric warmings of 1969?70,1970?-71 and 1972?73 winters and a minor warming in December 1972, is studied. The zonal ...
Wind Profiles to 100 km near 53N during 1969
Publisher: American Meteorological Society
Abstract: Spaced-antenna drift measurements between 60 and 100 km, from radiowave partial reflections, are presented in the form of zonal and meridional profiles for May and June 1969, and as a time cross section of zonal winds, ...
The Semi-Diurnal Tide at the Equinoxes: MF Radar Observations for 1978–1982 at Saskatoon (52°N, 107°W)
Publisher: American Meteorological Society
Abstract: Observations of the semi-diurnal atmospheric tide have been made on a continuous daily basis since September 1978 by a medium frequency (MF) radar. The monthly mean zonal winds and tidal amplitudes and phases (70?110 km), ...
Winds and Wave Motions to 110 km at Mid–Latitudes I. Partial Reflection Radiowave Soundings, 1972–73
Publisher: American Meteorological Society
Abstract: Measurements of winds (60?110 km) for Saskatoon, Canada (52N, 107W), have been obtained from a partial reflection radiowave system. Closely spaced atmospheric soundings (12 per hour) for heights between 51?117 km with 3?km ...
Winds and Wave Motions to 110 km at Mid-Latitudes. IV. Coupling Between Internal Gravity Waves and the Mean Flow
Publisher: American Meteorological Society
Abstract: The results of radiowave, partial reflection drift (wind) measurements from 60?110 km, for the years 1973?74, at Saskatoon, Canada (52°N, 107°W), are presented. Intensive soundings (12 profiles per hour) have provided ...
Developments in the Radiowave Drifts Technique for Measurement of High-Altitude Winds
Publisher: American Meteorological Society
Abstract: The drifts technique derives wind vectors from correlation analysis of spatial and temporal sequences of radiowave field strength at ground level. The paper examines the bases of the analysis, and presents a new method ...
Winds and Wave Motions to 110 km at Mid-Latitudes. V. An Analysis of Data from September 1974–April 1975
Publisher: American Meteorological Society
Abstract: The behavior of the daily noon winds at 52°N, 107° W (Saskatoon, Canada) at altitudes from 52 km to about 110 km are studied for the interval September 1974?Apzil 1975. These data are compared with ROCOB temperatures and ...