Abstract
The diurnal and semidiurnal tidal wind field variations in the altitudes between 80 and 100 km of the earth’s atmosphere over a mid-latitude station are studied by means of the phases of the zonal and meridional wind measurements made at Atlanta (34° N, 84° W). The rotation of diurnal tidal wind vector is seen to be clockwise at lower heights (80–86 km), swinging between clockwise and anti-clockwise at intermediate heights (88~96 km) and anti-clockwise at higher heights (96–100 km). The senses of rotation of diurnal and semidiurnal tidal wind vectors are compared between the stations located in the same and opposite hemispheres. The results are consistent with the tidal theory in the case of Atlanta and Adelaide (35°S, 139° E) whereas in the case of other stations considered in the present study, they showed marked variations.
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