# 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-black-marble-snpp-nighttime-radiance-daily> a tf:DataProductCollection ;
    dct:identifier "nasa-black-marble-snpp-nighttime-radiance-daily" ;
    dct:title "VIIRS/NPP Daily Gridded Day Night Band 15 arc-second Linear Lat Lon Grid Night V2" ;
    dct:description "NASA Black Marble Suomi NPP VIIRS Version 2 daily Level 3 top-of-atmosphere, at-sensor nighttime DNB radiance tiles. The main DNB observation is passive panchromatic visible/near-infrared light. Ancillary shortwave-infrared radiance, thermal brightness-temperature fields, viewing/lunar geometry, cloud masks and quality flags accompany it; the DNB itself is not thermal imaging. This is not the separate moonlight- and atmosphere-corrected A2 retrieval. Interpret cloud, snow/ice, lunar illumination, stray light, calibration and field-specific quality flags. The 15 arc-second geographic grid is angular posting, distinct from the underlying 750 m DNB sampling; catalog metre GSD is unspecified. Native 10-degree tile polygons and daily intervals describe file coverage, not illuminated areas, individual light sources or current facility activity. Radiance alone does not establish population, power loss or an identified object. Only requested metadata pages are indexed; HDF-EOS5/HDF5 science files stay remote under Earthdata/LAADS requirements. Native archive scope does not guarantee complete coverage or current delivery. NOAA announces Suomi NPP science-product delivery will cease at 13:00 UTC on November 2, 2026; native archive end dates remain unchanged." ;
    tf:providedBy <https://terrafabric.world/id/provider/nasa> ;
    tf:dataTier tf:tier-product ;
    tf:processingLevel tf:level-L3 ;
    tf:accessClass "free" ;
    tf:hasModality tf:modality-optical ;
    tf:hasModality tf:modality-thermal ;
    tf:dataCategory tf:category-imagery ;
    tf:hasPlatform <https://terrafabric.world/id/platform/suomi-npp> ;
    tf:hasInstrument <https://terrafabric.world/id/instrument/viirs> ;
    tf:allWeather false ;
    tf:nightCapable true ;
    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 "VNP46A1_2" ;
    dcat:keyword "VIIRS" ;
    dcat:keyword "Suomi NPP" ;
    dcat:keyword "Black Marble" ;
    dcat:keyword "version 2" ;
    dcat:keyword "nighttime lights" ;
    dcat:keyword "daily" ;
    dcat:keyword "15 arc-second grid" ;
    dcat:keyword "passive optical" ;
    dcat:keyword "DNB" ;
    dcat:keyword "panchromatic" ;
    dcat:keyword "top of atmosphere" ;
    dcat:keyword "at sensor radiance" ;
    dcat:keyword "ancillary thermal" ;
    tf:spatialExtent <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/extent/spatial> ;
    tf:temporalExtent <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/extent/temporal> ;
    tf:format <https://terrafabric.world/id/format/stac> ;
    tf:format <https://terrafabric.world/id/format/hdf-eos5> ;
    tf:format <https://terrafabric.world/id/format/hdf5> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/access/0> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/access/1> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/access/2> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/access/3> .

<https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/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-black-marble-snpp-nighttime-radiance-daily/extent/temporal> a tf:TemporalExtent ;
    tf:startDate "2012-01-19"^^xsd:date .

<https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/access/0> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://search.earthdata.nasa.gov/"^^xsd:anyURI .

<https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/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-black-marble-snpp-nighttime-radiance-daily/access/2> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/VNP46A1/"^^xsd:anyURI .

<https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-radiance-daily/access/3> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://www.nesdis.noaa.gov/news/cessation-of-suomi-national-polar-orbiting-partnership-s-npp-data-users-onafter-november-2-2026"^^xsd:anyURI .