# TerraFabric Ontology — generated by terrafabric-server
# version 1.0.0

@prefix tf: <https://terrafabric.world/ont#> .
@prefix tfr: <https://terrafabric.world/id/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix sosa: <http://www.w3.org/ns/sosa/> .
@prefix ssn: <http://www.w3.org/ns/ssn/> .
@prefix geo: <http://www.opengis.net/ont/geosparql#> .
@prefix schema: <https://schema.org/> .
@prefix odrl: <http://www.w3.org/ns/odrl/2/> .

<https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances> a tf:PreprocessedCollection ;
    dct:identifier "nasa-viirs-noaa21-moderate-radiances" ;
    dct:title "VIIRS/JPSS2 Moderate Resolution 6-Min L1B Swath 750 m V2.1" ;
    dct:description "NASA NOAA-21 VIIRS Version 2.1 Level 1B calibrated radiances and reflectances for sixteen M bands comprising eleven reflected-solar and five thermal-emissive bands, with nominal 750 m nadir sampling in six-minute swaths. Passive multispectral optical/infrared observations remain distinct from the separate Day/Night Band. Thermal bands support nighttime observations while reflected-solar fields require sunlight; the conservative night flag does not promise every field at night. Radiance and brightness temperature are not retrieved surface temperature, fire detections or a forecast. Match platform, acquisition time, band group and compatible processing version before associating internal arrays. Apply publisher calibration/geolocation and quality guidance. Native granule polygons and acquisition intervals stay intact; the viewer does not enumerate every internal science pixel or establish valid observations everywhere. Only requested metadata pages are indexed; NetCDF files remain remote and historical archive registration does not guarantee current delivery." ;
    tf:providedBy <https://terrafabric.world/id/provider/nasa> ;
    tf:dataTier tf:tier-preprocessed ;
    tf:processingLevel tf:level-L1B ;
    tf:accessClass "free" ;
    tf:hasModality tf:modality-multispectral ;
    tf:hasModality tf:modality-thermal ;
    tf:dataCategory tf:category-imagery ;
    tf:hasPlatform <https://terrafabric.world/id/platform/noaa-21> ;
    tf:hasInstrument <https://terrafabric.world/id/instrument/viirs> ;
    tf:gsdMeters "750"^^xsd:decimal ;
    tf:allWeather false ;
    tf:nightCapable false ;
    tf:taskable false ;
    tf:license <https://terrafabric.world/id/license/provider-terms> ;
    tf:releasability tf:marking-public ;
    dcat:keyword "earth-observation" ;
    dcat:keyword "primary-source" ;
    dcat:keyword "stac" ;
    dcat:keyword "VJ202MOD_2.1" ;
    dcat:keyword "VIIRS" ;
    dcat:keyword "NOAA-21" ;
    dcat:keyword "JPSS-2" ;
    dcat:keyword "version 2.1" ;
    dcat:keyword "moderate" ;
    dcat:keyword "750 m sampling" ;
    dcat:keyword "M bands" ;
    dcat:keyword "calibrated radiance" ;
    dcat:keyword "reflectance" ;
    dcat:keyword "passive optical" ;
    dcat:keyword "multispectral" ;
    dcat:keyword "thermal" ;
    tf:spatialExtent <https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/extent/spatial> ;
    tf:temporalExtent <https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/extent/temporal> ;
    tf:format <https://terrafabric.world/id/format/stac> ;
    tf:format <https://terrafabric.world/id/format/netcdf-4> ;
    tf:format <https://terrafabric.world/id/format/hdf5> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/access/0> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/access/1> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/access/2> .

<https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/extent/spatial> a tf:SpatialExtent ;
    tf:bbox "-180,-90,180,90" ;
    tf:asWKT "POLYGON((-180 -90,180 -90,180 90,-180 90,-180 -90))"^^geo:wktLiteral .

<https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/extent/temporal> a tf:TemporalExtent ;
    tf:startDate "2023-02-10"^^xsd:date .

<https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/access/0> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://search.earthdata.nasa.gov/"^^xsd:anyURI .

<https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/access/1> a tf:AccessMethod ;
    tf:accessKind "stac-api" ;
    tf:endpointURL "https://cmr.earthdata.nasa.gov/stac/LAADS"^^xsd:anyURI .

<https://terrafabric.world/id/collection/nasa-viirs-noaa21-moderate-radiances/access/2> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/VJ202MOD"^^xsd:anyURI .