Comparison of Horizontal Wind Speed and Direction Measurements from Dual-Doppler Radar and Profiling Lidars: Article No. 092101

Dual-Doppler radar is a relatively new technology in the wind energy community and thus not yet studied vastly. This paper aims to compare horizontal wind speed and direction data retrieved from dual-Doppler radar and profiling lidars within the American WAKE experimeNt (AWAKEN) to investigate the influence of measurement height, wind direction and speed on the comparison. The 10-min averaged data show a better agreement of the measurements for higher altitudes, especially at faster wind speeds. For the wind direction, two sectors of larger differences in the measurements were detected: around 270 degrees transient winds occur with a higher frequency than in other sectors. To explain the different measurement values in the wind direction sector around 90 degrees, further studies, e.g. on the influence of atmospheric stability, are necessary.