<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:gcmd="https://gcmd.earthdata.nasa.gov/kms#" xmlns:dcterms="http://purl.org/dc/terms/" xml:base="https://gcmd.earthdata.nasa.gov/kms/concept/">
  <gcmd:gcmd>
    <gcmd:termsOfUse>https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf</gcmd:termsOfUse>
    <gcmd:keywordVersion>23.7</gcmd:keywordVersion>
    <gcmd:schemeVersion>2026-04-15T10:53:30.610Z</gcmd:schemeVersion>
    <gcmd:viewer>https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/426aee98-764c-4c21-ab65-1e9d4bd6b0d0</gcmd:viewer>
  </gcmd:gcmd>
  <skos:Concept rdf:about="426aee98-764c-4c21-ab65-1e9d4bd6b0d0">
    <skos:broader rdf:resource="77397026-09c9-44e0-b85f-77b2bc9b1630"/>
    <skos:prefLabel xml:lang="en">TROPOSPHERIC OZONE</skos:prefLabel>
    <gcmd:reference gcmd:text="Glossary of Meteorology, American Meteorological Society, 1998." xml:lang="en"/>
    <skos:definition xml:lang="en">Ozone (O3) that is measured  in the lowest 10-20 km of the Atmosphere.While the maximum concentration of ozone occurs between 20-25 km, ahigh concentration of ozone close to the Earth&apos;s surface is considered apublic health threat.</skos:definition>
    <skos:inScheme rdf:resource="https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords"/>
  </skos:Concept>
</rdf:RDF>