@prefix actris_vocab: <https://vocabulary.actris.nilu.no/actris_vocab/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .

actris_vocab:ceilometer
  skos:definition "Instrument measuring the height of the cloud base above ground level. The instrument uses either triangulation by projecting a light spot onto the cloud base at a slant angle while varying and measuring the slant angle so the light spot appears over the detector located at a distance and looking upwards, or by shooting a laser pulse vertically upwards to the cloud base and measuring the time until the reflected pulse arrives at the detector located next to the laser."@en ;
  skos:broader actris_vocab:meteorologicalbaseparametersensor ;
  skos:inScheme actris_vocab: ;
  skos:prefLabel "ceilometer"@en ;
  dc:creator <https://orcid.org/0000-0001-9834-5100> ;
  a skos:Concept .

actris_vocab:meteorologicalbaseparametersensor
  skos:prefLabel "meteorological base parameter sensor"@en ;
  a skos:Concept ;
  skos:narrower actris_vocab:ceilometer .

actris_vocab:
  skos:prefLabel "ACTRIS Vocabulary"@en ;
  a skos:ConceptScheme .