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Spectrum Analysis of the Inversion Boundary Temporal Changes from Sodar Dataстатья
- Автор: Lokoshchenko M.A.
- Сборник: Proceedings of the 8-th International Symposium on Acoustic Remote Sensing of the Atmosphere and Oceans
- Год издания: 1996
- Место издания: Moscow, Russia
- Первая страница: 7.65
- Последняя страница: 7.70
- Аннотация: The vertical sodar “ECHO-1” facsimile records, obtained in Moscow in 1991, are analyzed. The 16 periods of continuous inversion registrations (both ground and elevated) during up to 14 hours are considered. For every period the height of inversion top was coded manually with intervals of 2 min. The oscillation periodicity is analyzed by the use of periodogrames. The high-frequency oscillations with periods of 4-6 min, generated usually by turbulent processes, correspond to the largest values of spectral density. The low-frequency oscillations with periods of nearly some decades of minutes are weaker and majority of them caused, probably, by internal gravity waves. The Brent-Vaisala frequency and Richardson number values are calculated by radiosonde data. The longest oscillations period doesn’t exceed 60-80 min.
- Добавил в систему: Локощенко Михаил Александрович