@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/77397026-09c9-44e0-b85f-77b2bc9b1630>
  skos:prefLabel "AIR QUALITY"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/227cf2d4-968a-4312-89e6-8c6bcf616e5d> .

<https://gcmd.earthdata.nasa.gov/kms/concept/227cf2d4-968a-4312-89e6-8c6bcf616e5d>
  skos:definition """The effect of (primarily) aerosols, through their total optical depth, in reducing the transmission of direct solar radiation to the surface below that through a purely molecular atmosphere.

Measures of turbidity refer to the total aerosol optical depth, either directly at a specified wavelength (e.g., the Volz turbidity factor or the Ängström turbidity coefficient, which is referenced to a wavelength of 1 μm), or indirectly by the ratio of aerosol to Rayleigh optical depth (e.g., the Linke turbidity factor)."""@en ;
  skos:prefLabel "TURBIDITY"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/77397026-09c9-44e0-b85f-77b2bc9b1630> ;
  a skos:Concept .