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Sodium layers (75–105 km) were measured by Na lidar on three nights from 1 to 3 of March 1996. The lidar data were used to calculate the Na density profiles and the atmospheric density spectra. The vertical wave number spectra exhibit power-law shapes with average slopes of −2.38 and magnitude at m =2π/(3 km) of 8.40 × 10 5 (m 2 s −2 )/(cyc/m) in the mesopause region.
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Ai et al. (2014) studied this question.
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