@prefix dc: <http://purl.org/dc/terms/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix ns0: <https://w3id.org/iadopt/ont/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://w3id.org/ozcar-theia/def_6e1bafff>
  dc:source "https://www.weap21.org/WebHelp/Mabia_Alg_ETRef.htm"@en ;
  rdf:value "Reference crop evapotranspiration or reference evapotranspiration, denoted as ETo or ETref, is the estimation of the evapotranspiration from the \"reference surface.\" The reference surface is a hypothetical grass reference crop with an assumed crop height of 0.12 m, a fixed surface resistance of 70 s/m and an albedo of 0.23. The reference surface closely resembles an extensive surface of green, well-watered grass of uniform height, actively growing and completely shading the ground. The fixed surface resistance of 70 s/m implies a moderately dry soil surface resulting from about a weekly irrigation frequency."@en .

<https://w3id.org/ozcar-theia/> a skos:ConceptScheme, owl:Ontology .
<https://w3id.org/ozcar-theia/c_b45bee9c>
  skos:prefLabel "Evapotranspiration"@en ;
  a <https://w3id.org/iadopt/ont/Entity>, skos:Concept .

<https://w3id.org/ozcar-theia/c_48a25841>
  ns0:constrains <https://w3id.org/ozcar-theia/c_b45bee9c> ;
  skos:broader <https://w3id.org/ozcar-theia/c_adba9536> ;
  skos:definition <https://w3id.org/ozcar-theia/def_6e1bafff> ;
  dc:created "2022-02-07T17:00:00"^^xsd:dateTime ;
  skos:inScheme <https://w3id.org/ozcar-theia/> ;
  skos:prefLabel "Reference evapostranspiration"@en ;
  a ns0:Constraint, skos:Concept .

<https://w3id.org/ozcar-theia/c_adba9536>
  skos:prefLabel "Evapotranspiration constraint"@en ;
  a skos:Concept ;
  skos:narrower <https://w3id.org/ozcar-theia/c_48a25841> .