Measurements of wind turbulence parameters by a conically scanning coherent Doppler lidar in the atmospheric boundary layer
The method and results of lidar studies of spatiotemporal variability of wind turbulence in the atmospheric boundary layer are reported. The measurements were conducted by a Stream Line pulsed coherent Doppler lidar (PCDL) with the use of conical scanning by a probing beam around the vertical axis...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
Copernicus Publications
2017-11-01
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Series: | Atmospheric Measurement Techniques |
Online Access: | https://www.atmos-meas-tech.net/10/4191/2017/amt-10-4191-2017.pdf |
Summary: | The method and results of lidar studies of spatiotemporal variability of wind
turbulence in the atmospheric boundary layer are reported. The measurements
were conducted by a Stream Line pulsed coherent Doppler lidar (PCDL) with the use of conical scanning by a probing beam around the vertical axis. Lidar data are used to estimate the kinetic energy of turbulence, turbulent energy
dissipation rate, integral scale of turbulence, and momentum fluxes. The
dissipation rate was determined from the azimuth structure function of radial
velocity within the inertial subrange of turbulence. When estimating the
kinetic energy of turbulence from lidar data, we took into account the
averaging of radial velocity over the sensing volume. The integral scale of
turbulence was determined on the assumption that the structure of random
irregularities of the wind field is described by the von Kármán
model. The domain of applicability of the used method and the accuracy of the estimation of turbulence parameters were determined. Turbulence parameters estimated from Stream Line lidar measurement data and from data of a sonic anemometer were compared. |
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ISSN: | 1867-1381 1867-8548 |