# 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> a tf:DataProductCollection ;
    dct:identifier "nasa-modis-terra-aerosol" ;
    dct:title "MODIS/Terra Aerosol 5-Min L2 Swath 10km" ;
    dct:description "Collection 6.1 MODIS Terra Level 2 aerosol optical depth and related aerosol properties from Dark Target land/ocean and Deep Blue land retrievals. The nominal 10 km nadir retrieval sampling is distinct from the underlying MODIS instrument resolution and the separate 3 km aerosol product. Passive reflected-solar multispectral retrievals apply during daytime in cloud-free, snow/ice-free conditions; valid sampling varies by surface and algorithm. Column aerosol optical depth is not a direct surface PM2.5 concentration, verified plume boundary or forecast. Apply product-specific quality, applicability and uncertainty flags. Native granule polygons and observation intervals are preserved; file coverage does not prove valid retrievals everywhere. Only requested metadata pages are indexed, and historical 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 "10000"^^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_L2_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 "Deep Blue" ;
    dcat:keyword "daytime" ;
    dcat:keyword "10 km retrieval sampling" ;
    tf:spatialExtent <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol/extent/spatial> ;
    tf:temporalExtent <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol/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/access/0> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol/access/1> ;
    tf:accessibleVia <https://terrafabric.world/id/collection/nasa-modis-terra-aerosol/access/2> .

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

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