# 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-lights-monthly> a tf:DataProductCollection ;
    dct:identifier "nasa-black-marble-snpp-nighttime-lights-monthly" ;
    dct:title "VIIRS/NPP Lunar BRDF-Adjusted Nighttime Lights Monthly L3 Global 15 arc second Linear Lat Lon Grid V2" ;
    dct:description "NASA Black Marble Suomi NPP VIIRS Version 2 Level 3 monthly composites of moonlight- and atmosphere-corrected, lunar BRDF-adjusted nighttime radiance derived from passive visible/near-infrared DNB observations. Separate snow-covered and snow-free fields provide all-angle, near-nadir and off-nadir estimates, observation counts, quality flags and standard deviations. Inspect DNB_Platform provenance and publisher calibration, cloud, snow/ice, lunar and quality guidance before combining records. Composites and gap-filled values are not instantaneous observations or proof of fresh valid measurements everywhere. The 15 arc-second geographic grid is angular posting, distinct from underlying 750 m DNB sampling; catalogue metre GSD is unspecified. Native 10-degree tile polygons and full calendar month intervals describe file scope, not illuminated areas or current facility activity. Initial averaging periods can include days before sensor data availability; use observation counts rather than assuming complete coverage. Radiance alone does not establish population, power loss or an identified object. Only requested metadata pages are indexed; HDF-EOS5/HDF5 science files remain remote under Earthdata/LAADS requirements. Native archive registration does not guarantee 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: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 "VNP46A3_2" ;
    dcat:keyword "VIIRS" ;
    dcat:keyword "Suomi NPP" ;
    dcat:keyword "Black Marble" ;
    dcat:keyword "version 2" ;
    dcat:keyword "nighttime lights" ;
    dcat:keyword "monthly" ;
    dcat:keyword "temporal composite" ;
    dcat:keyword "15 arc-second grid" ;
    dcat:keyword "passive optical" ;
    dcat:keyword "DNB" ;
    dcat:keyword "panchromatic" ;
    dcat:keyword "BRDF" ;
    dcat:keyword "moonlight adjusted" ;
    dcat:keyword "atmosphere corrected" ;
    dcat:keyword "observation counts" ;
    dcat:keyword "standard deviation" ;
    dcat:keyword "quality flags" ;
    dcat:keyword "DNB_Platform" ;
    dcat:keyword "snow covered" ;
    dcat:keyword "snow free" ;
    dcat:keyword "viewing angle" ;
    tf:spatialExtent <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/extent/spatial> ;
    tf:temporalExtent <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/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-lights-monthly/access/0> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/access/1> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/access/2> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/access/3> .

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

<https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/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-lights-monthly/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-lights-monthly/access/2> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/VNP46A3/"^^xsd:anyURI .

<https://terrafabric.world/id/collection/nasa-black-marble-snpp-nighttime-lights-monthly/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 .