@prefix cfstdn: <https://vocab.met.no/CFSTDN/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .

cfstdn:sea_surface_wind_wave_zero_upcrossing_period
  owl:sameAs cfstdn:sea_surface_wind_wave_mean_period ;
  owl:deprecated true ;
  skos:definition "A period is an interval of time, or the time-period of an oscillation. The zero upcrossing period is defined as the time interval between consecutive occasions on which the surface height passes upward above the mean level. Wind waves are waves on the ocean surface. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.)"@en ;
  dc:isReplacedBy cfstdn:sea_surface_wind_wave_mean_period ;
  skos:inScheme <https://vocab.met.no/CFSTDN> ;
  dc:source <http://cfconventions.org/Data/cf-standard-names/78/build/cf-standard-name-table.html> ;
  a skos:Concept ;
  skos:topConceptOf <https://vocab.met.no/CFSTDN> ;
  skos:note "deprecated"@en ;
  skos:exactMatch <http://vocab.nerc.ac.uk/collection/P07/current/CFSN0392/> ;
  skos:prefLabel "sea_surface_wind_wave_zero_upcrossing_period"@en .

<https://vocab.met.no/CFSTDN>
  skos:prefLabel "Climate and Forecast Standard Names"@en ;
  a skos:ConceptScheme ;
  skos:hasTopConcept cfstdn:sea_surface_wind_wave_zero_upcrossing_period .

cfstdn:sea_surface_wind_wave_mean_period
  skos:prefLabel "sea_surface_wind_wave_mean_period"@en ;
  a skos:Concept .