Latent Heat Flux and TKE measurements from the combined use of Water Vapour Raman and Wind Doppler Lidars during WaLiNeas Campaign

Measurements of latent heat flux profiles in the daytime convective boundary layer were carried out in the frame of the WaLiNeAs field campaign, taking advantage of the combined use of two ground-based lidars: a water vapour Raman lidar and a wind Doppler lidar. Water vapour mixing ratio profile measurements were carried out based on the exploitation of the roto-vibrational Raman lidar technique in the UV, while vertical wind profile measurements were carried out with a Doppler wind lidar. Cloud-free 60-minute analysis periods from the WaLiNeAs campaign are considered as case studies, with a 10-second temporal resolution for several selected cases. The vertical turbulent flow is calculated as the covariance between the time series of the vertical velocity (w) and the water vapor mixing ratio fluctuations (q). The TKE (Turbulent Kinetic Energy) is also computed as a further parameter by the wind lidar for the same selected cases, revealing good agreement with the flow measurements.