https://hdl.handle.net/21.12132/3.53c2df8dc1c84f7c 1.0 https://instrumentdb.out.ocp.fmi.fi/instrument/53c2df8d-c1c8-4f7c-b283-92529b3e38f3 UV CL51 University of Valencia 043nxc105 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 2013-06-13 CL010326