A Low-Level Atmospheric Vertical Velocity Comparison between a High-Resolution Acoustic Sounder and a Turbulence Probe

Power spectra of vertical wind velocity, obtained using a 6.5-kHz monostatic atmospheric acoustic sounder, are presented which clearly show the inertial subrange. The spectra are compared with directly measured spectra, all measurements being made at a height of 8 m. Very good agreement is found under convective conditions although some spectral loss in the sounder measurements is experienced 2 in stable conditions. The wind structure parameter Cv2 is also estimated from the spectral density of the vertical component of the wind speed and compared with direct measurements. Time series comparisons of vertical wind velocity and Cv2, are also presented.