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Acoustic Remote Sensing of Ground Inversions in the Atmospheric Boundary Layer above Moscowстатья
- Автор: Lokoshchenko M.A.
- Сборник: Proceedings of the International Conference “Meteorological Processes in the Boundary Layer of the Atmosphere”
- Год издания: 1996
- Место издания: Geophysical Institute of the Slovac Academy of Sciences Bratislava, Slovak Republic
- Первая страница: 138
- Последняя страница: 143
- Аннотация: Ground inversions in 800-m air layer above Moscow were investigated from facsimile records of vertical sodar “ECHO-1”, obtained during more than three years of continuous acoustic sensing. Their probability is closed in all seasons but top of such inversions in winter is higher than in summer. Moreover annual course of the top height is skew: its sharp increase during autumn in contrast with gradual decrease in spring is usually the result of snow cover formation. Ground inversions, capped by the elevated ones, have significantly less thickness than single ground inversions (without elevated inversions above them up to 800 m height). Both phenomena are explained, probably, by changes of radiation balance components. Sodar data don’t confirm permanent growth of ground inversion thickness during nocturnal time, assuming by some theoretical models. Simultaneous observations of the boundary layer structure in Moscow region by three sodars have indicated consequent decreasing of ground inversions’ frequency in direction from rural zone to the city centre.
- Добавил в систему: Локощенко Михаил Александрович