https://hdl.handle.net/21.12132/3.38c847977e764f16 1.0 https://instrumentdb.out.ocp.fmi.fi/instrument/38c84797-7e76-4f16-96cf-6bc31142ac71 AWI CL51 Alfred Wegener Institute for Polar and Marine Research 032e6b942 Vaisala Oyj 05yhgzh28 Vaisala CL51 https://vocabulary.actris.nilu.no/actris_vocab/VaisalaCL51 lidar ceilometer https://vocabulary.actris.nilu.no/actris_vocab/lidarceilometer attenuated backscatter coefficient 2011-08-24 https://doi.org/10.5194/essd-10-1451-2018 F0520002