# 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-modis-terra-aerosol-3km> a tf:DataProductCollection ;
    dct:identifier "nasa-modis-terra-aerosol-3km" ;
    dct:title "MODIS/Terra Aerosol 5-Min L2 Swath 3km" ;
    dct:description "Collection 6.1 MODIS Terra Level 2 3 km aerosol optical-depth and related Dark Target retrievals over suitable land and ocean. This separate product contains Dark Target retrievals only, not the Deep Blue or merged retrievals in the 10 km aerosol files. Nominal 3 km nadir product sampling is distinct from MODIS sensor resolution and varies across the swath. Passive reflected-solar multispectral retrievals require daytime and appropriate cloud/snow/ice-free surface conditions. Column aerosol optical depth is not a direct surface PM2.5 concentration, verified plume boundary or forecast. Apply product-specific quality, applicability, uncertainty and sampling guidance. Native granule polygons and observation intervals remain intact; file polygons do not delineate individual clouds/plumes or establish valid retrievals everywhere. Only requested metadata pages are indexed; archive registration does not guarantee current freshness." ;
    tf:providedBy <https://terrafabric.world/id/provider/nasa> ;
    tf:dataTier tf:tier-product ;
    tf:processingLevel tf:level-L2 ;
    tf:accessClass "free" ;
    tf:hasModality tf:modality-atmospheric ;
    tf:hasModality tf:modality-multispectral ;
    tf:dataCategory tf:category-imagery ;
    tf:hasPlatform <https://terrafabric.world/id/platform/terra> ;
    tf:hasInstrument <https://terrafabric.world/id/instrument/modis> ;
    tf:gsdMeters "3000"^^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 "MOD04_3K_6.1" ;
    dcat:keyword "MODIS" ;
    dcat:keyword "terra" ;
    dcat:keyword "passive optical" ;
    dcat:keyword "multispectral" ;
    dcat:keyword "collection 6.1" ;
    dcat:keyword "aerosol" ;
    dcat:keyword "aerosol optical depth" ;
    dcat:keyword "AOD" ;
    dcat:keyword "AOT" ;
    dcat:keyword "Dark Target" ;
    dcat:keyword "3 km retrieval sampling" ;
    dcat:keyword "daytime" ;
    tf:spatialExtent <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/extent/spatial> ;
    tf:temporalExtent <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/extent/temporal> ;
    tf:format <https://terrafabric.world/id/format/stac> ;
    tf:format <https://terrafabric.world/id/format/hdf-eos> ;
    tf:format <https://terrafabric.world/id/format/hdf4> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/access/0> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/access/1> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/access/2> .

<https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/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-modis-terra-aerosol-3km/extent/temporal> a tf:TemporalExtent ;
    tf:startDate "2000-02-24"^^xsd:date .

<https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/access/0> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://search.earthdata.nasa.gov/"^^xsd:anyURI .

<https://terrafabric.world/id/collection/nasa-modis-terra-aerosol-3km/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-modis-terra-aerosol-3km/access/2> a tf:AccessMethod ;
    tf:accessKind "https" ;
    tf:endpointURL "https://darktarget.gsfc.nasa.gov/products/modis"^^xsd:anyURI .