ACTRIS-CARS-ALC-LMU — Automatic low-power Lidar and Ceilometer

Within the ACTRIS project, the Meteorological Institute of the LMU is part of the Centre for Aerosol Remote Sensing (CARS) and shares the automatic low-power lidar and ceilometer unit (CARS-ALC) with Deutscher Wetterdienst (DWD). The main focus of the unit is on the development and provision of quality assurance and control (QA/QC) services, guidelines, tools/algorithms for calibration/characterization, protocols and training on ALCs. For this purpose, a testbed with ceilometer models from different manufacturers is operated and in addition reference measurements of the AHL-LMU unit are used.

Because ALCs are spread across a large user community, the work is based on the cooperation between several ACTRIS Central Facilites (CARS, CCRES - Centre for Cloud Remote Sensing, CLU - Cloud Remote Sensing Data Centre, ARES - Aerosol Remote Sensing Data Centre), the EUMETNET E-Profile programme and the PROBE COST action (Profiling the atmospheric boundary layer at European scale).


  • Lufft CHM15kx at 1064 nm wavelength
  • Lufft CHM8k at 905 nm wavelength
  • Vaisala CL31 at 910 nm wavelength
  • Vaisala CL51 at 910 nm wavelength
  • Vaisala CL61 at 910 nm wavelength
  • Campbell Scientific SkyVUEPRO at 912 nm wavelength

Quicklooks of the measurements can be found here

Contact: Alexander Geiß