In this work, we use the tower-based in-situ humidity measurements for the calibration of the Raman water vapor lidar deployed at the Cabauw Experimental Site for Atmospheric Research (Caeli), evaluating its stability throughout the year. Calibrated water vapor profiles from the lidar were compared with operational radiosonde data with no significant difference. Also, a direct comparison between the lidar and tower humidity measurements in high time resolution at 200 m is shown. The day-to-day variability of the calibration constant was found to be smaller than 2%, for both day and nighttime operations.
Gouveia et al. (Thu,) studied this question.