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Original Articles

Mean zonal and Meridional wind profiles for the mesosphere and lower thermosphere at 52°n, l = 4.4, during solar maximum

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Pages 24-34 | Received 13 Aug 1980, Published online: 15 Nov 2010
 

Abstract

Hourly mean winds from a partial reflection radiowave system were obtained from September 1978 to October 1979 at Saskatoon, Canada (52°N, 107°W). Comparisons of noon values with ROCOB winds at heights of 60–65 km, show satisfactory agreement. The daily mean winds, 60–110km, are used to form monthly profiles, and these are compared with CIRA 1972. Significant differences are found and are ascribed to a solar cycle effect.

Résumé

On a déterminé les vents moyens sur des périodes d'une heure à Saskatoon, Canada(52°N, 107°W) de septembre 1978à octobre 1979, en utilisant la méthode de réflexion partielle des ondes hertziennes. Une comparaison des valeurs relevées à midi avec celles des vents ROCOB à une altitude de 60–65 km révèle une concordance satisfaisante. On a utilisé les vents quotidiens moyens à une altitude de 60 à 110km pour établir des profils mensuels moyens que l'on a comparés aux profils CIRA 1972. On attribue les différences importantes à un effet du cycle solaire.

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