The main objectives of the campaigns are:

• Evaluate the potential of ceilometers and commercial automatic lidars for aerosol profiling (in terms of sensitivity to different loads and types of aerosols);
• Study of instrument SNR and dynamic range (depending on the aerosol extinction coefficient, water vapor content, solar irradiance, ….);
• Study of instrument time stability (e.g. laser, detector, efficiency, thermal drifts,…);
• Assess the ceilometer’s calibration stability and accuracy

- M.Rosoldi, F. Madonna, S. Lolli, G.Pappalardo, J. Vande Hey, CAMPBELL Team, VAISALA team, and SigmaSpace/Envicontrol team