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Proceedings Paper

Diurnal variations of the kinetic energy density in the atmospheric boundary layer from the data of acoustic sounding
Author(s): Liudmila G. Shamanaeva; Aleksandr I. Potekaev
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Paper Abstract

Diurnal variations of the kinetic energy density of the ordered (with the average wind velocity) and turbulent motions of air masses are retrieved from the data of acoustic sounding of the average profiles and variances of wind velocity components in a 200-meter layer of the lower atmosphere. Spatiotemporal variations of the kinetic energy of turbulent and ordered motions are analyzed. Analysis of the vertical profiles of the kinetic energy components shows that in the lower layer of the atmosphere to altitudes of 25–50 m their values are small and their spread is low; they are increased with altitude. The turbulent component of the kinetic energy considerably exceeds the kinetic energy of the ordered motion, they both increase with altitude, and their diurnal behavior is characterized by the presence of several minima and maxima whose occurrence and amplitudes depend on the meteorological conditions during measurements, the presence and the characteristics of cloudiness, and the solar radiation intensity. The maximal values of the kinetic energy components are observed at midnight.

Paper Details

Date Published: 18 December 2019
PDF: 4 pages
Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1120873 (18 December 2019); doi: 10.1117/12.2540312
Show Author Affiliations
Liudmila G. Shamanaeva, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
National Research Tomsk State Univ. (Russian Federation)
Aleksandr I. Potekaev, National Research Tomsk State Univ. (Russian Federation)
Technical Institute at Tomsk State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11208:
25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii; Gennadii G. Matvienko, Editor(s)

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