Affordable Access

Access to the full text

Dynamics of the Kinetic Energy in the Atmospheric Boundary Layer from the Results of Minisodar Measurements

Authors
  • Shamanaeva, L. G.1, 2
  • Potekaev, A. I.2, 3
  • Krasnenko, N. P.4, 5
  • Kapegesheva, O. F.2
  • 1 V. E. Zuev Institute of Atmospheric Optics of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia , Tomsk (Russia)
  • 2 National Research Tomsk State University, Tomsk, Russia , Tomsk (Russia)
  • 3 V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University, Tomsk, Russia , Tomsk (Russia)
  • 4 Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia , Tomsk (Russia)
  • 5 Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia , Tomsk (Russia)
Type
Published Article
Journal
Russian Physics Journal
Publisher
Springer US
Publication Date
Apr 13, 2019
Volume
61
Issue
12
Pages
2282–2287
Identifiers
DOI: 10.1007/s11182-019-01668-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

Based on acoustic remote measurements of vertical profiles of three wind velocity components in a 200-meter boundary layer of the atmosphere, values of the kinetic energy of the atmosphere and its components: kinetic energy of ordered motion EMKE (with average wind velocity) and turbulent kinetic energy ETKE are estimated. An analysis of their vertical profiles has demonstrated that at altitudes up to ~25–50 m, the turbulent kinetic energy values and their spreads are very small and sharply increase with altitude. The maximum ETKE values are observed at midnight, as well as the maximum EMKE values. In the morning, the contribution of the kinetic energy of the ordered motion in the lower 100-meter layer of the atmosphere exceeds that of the turbulent motion, which can be caused by the presence of a wind shear in the corresponding wind velocity profiles. The vertical EMKE profile increases in the morning, reaches maximum values by noon, and then decreases by midnight. The diurnal variations of the kinetic energy are characterized by the presence of several minima and maxima whose values and times of occurrence depend on the meteorological conditions during sounding session, the presence and characteristics of cloudiness, and the solar radiation intensity.

Report this publication

Statistics

Seen <100 times