Investigation of vertical wavenumber and frequency spectra of gravity-wave-induced vertical wind and temperature perturbations
نویسندگان
چکیده
233 hours of high-precision vertical wind and temperature measurements in the mesosphere and lower thermosphere (MLT) were used to study the spectra of gravity wave perturbations in the mesopause region. The temperature spectra are generally consistent with the theoretical predictions of gravity wave theory. The averaged slope of the frequency (f) spectra is –1.83±0.08, while the slope of the vertical wavenumber (m) spectra is –3.0±0.1. The observed f and m spectra of vertical winds are both very shallow. The averaged slope of the f-spectra is –0.4±0.1, and the averaged slope of m-spectra is – 1.01±0.04. These spectral characteristics of gravity waves provide important insights into the mechanisms that are primarily responsible for wave damping and dissipation in the atmosphere.
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