Some Further Results Concerning the Vertical Structure of Atmospheric Tidal Motions Within the Lowest 30 Kilometers

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Abstract
Long records of 2- and 4-times-daily rawinsonde data have been analyzed in order to obtain further information concerning the vertical structure of atmospheric tidal motions within the lowest 30 km. From the results of this study it is apparent that topographically induced diurnal tidal motions extend upward to at least 28 km, the highest level at which there exist sufficient data f or isolating them. At stratospheric levels the diurnal tide exhibits large seasonal variations with complete phase reversals in some regions. In contrast to the diurnal tide, the semidiurnal tide appears to be largely independent of topography and varies little with season. There is no evidence of a node below 30 km.

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