Lidar Estimates of the Anisotropy of Wind Turbulence in a Stable Atmospheric Boundary Layer

Abstract

In this paper, a method is proposed to estimate wind turbulence parameters using measurements recorded by a conically scanning coherent Doppler lidar with two different elevation angles. This methodology helps determine the anisotropy of the spatial correlation of wind velocity turbulent fluctuations. The proposed method was tested in a field experiment with a Stream Line lidar (Halo Photonics, Brockamin, Worcester, United Kingdom) under stable temperature stratification conditions in the atmospheric boundary layer. The results show that the studied anisotropy coefficient in a stable boundary layer may be up to three or larger.

Keywords

• coherent Doppler lidar
• wind turbulence
• anisotropy
• stable atmospheric boundary layer