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	<owl:Ontology rdf:about="https://csdms.colorado.edu/wiki/Special:ExportRDF/Alldata-3ANational_Climatic_Data_Center_HDSS_Access_System">
		<swivt:creationDate rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2026-05-01T13:32:29-06:00</swivt:creationDate>
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	<swivt:Subject rdf:about="http://arroyo.colorado.edu/wiki/Special:URIResolver/Alldata-3ANational_Climatic_Data_Center_HDSS_Access_System">
		<rdfs:label>Alldata:National Climatic Data Center HDSS Access System</rdfs:label>
		<rdfs:isDefinedBy rdf:resource="https://csdms.colorado.edu/wiki/Special:ExportRDF/Alldata-3ANational_Climatic_Data_Center_HDSS_Access_System"/>
		<swivt:page rdf:resource="https://csdms.colorado.edu/wiki/Alldata-3ANational_Climatic_Data_Center_HDSS_Access_System"/>
		<swivt:wikiNamespace rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">3024</swivt:wikiNamespace>
		<swivt:wikiPageContentLanguage rdf:datatype="http://www.w3.org/2001/XMLSchema#string">en</swivt:wikiPageContentLanguage>
		<property:Caption_dataset_image rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Example of NEX-radar data</property:Caption_dataset_image>
		<property:Data_download_link rdf:resource="http://has.ncdc.noaa.gov/pls/plhas/has.dsselect"/>
		<property:Data_format rdf:datatype="http://www.w3.org/2001/XMLSchema#string">NetCDF</property:Data_format>
		<property:Data_origin rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Measured</property:Data_origin>
		<property:Data_resolution rdf:datatype="http://www.w3.org/2001/XMLSchema#string">km to 2 degrees of lat/lon</property:Data_resolution>
		<property:Data_source_link rdf:resource="http://www.ncdc.noaa.gov/oa/ncdc.html"/>
		<property:Data_spatial_coverage rdf:datatype="http://www.w3.org/2001/XMLSchema#string">US (most) and global (some)</property:Data_spatial_coverage>
		<property:Data_temporal_coverage rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Time series</property:Data_temporal_coverage>
		<property:Data_time_period_covered rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Depends on data set chosen</property:Data_time_period_covered>
		<property:Data_type rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Climate</property:Data_type>
		<property:Extended_data_description rdf:datatype="http://www.w3.org/2001/XMLSchema#string">This data portal, operated by the National Oceanic and Atmospheric Administration (NOAA) and the National Climatic Data Center (NCDC), contains archives of weather radar data (Doppler radar: NEXRAD), satellite coverage, and additional surface and marine data. These additional surface and marine data comprise historical forecasts and analyses, as well as the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) that covers three centuries of global ocean-atmosphere data, including 2x2 and (since 1960) 1x1 degree gridded data sets.

A tutorial for retrieving radar data is here:
http://www.ncdc.noaa.gov/oa/radar/nxhastutorial.html</property:Extended_data_description>
		<property:One-2Dline_data_description rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Access portal for US weather radar data, satellite data, and additional (US and international) historical weather forecasts and data</property:One-2Dline_data_description>
		<property:Other_data_format rdf:datatype="http://www.w3.org/2001/XMLSchema#string">May be others; I have not yet used all of the products. Weather radar must be converted into NetCDF</property:Other_data_format>
		<property:Upload_image_dataset rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Image:NEX-radar.png</property:Upload_image_dataset>
		<swivt:wikiPageCreationDate rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-08-18T17:24:13Z</swivt:wikiPageCreationDate>
		<property:Creation_date-23aux rdf:datatype="http://www.w3.org/2001/XMLSchema#double">2455792.2251505</property:Creation_date-23aux>
		<property:Last_editor_is rdf:resource="&wiki;User-3AWikiSysop"/>
		<swivt:wikiPageModificationDate rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2025-03-11T16:43:51Z</swivt:wikiPageModificationDate>
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		<swivt:wikiPageSortKey rdf:datatype="http://www.w3.org/2001/XMLSchema#string">National Climatic Data Center HDSS Access System</swivt:wikiPageSortKey>
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