@prefix void:  <http://rdfs.org/ns/void#> .
@prefix adms:  <http://www.w3.org/ns/adms#> .
@prefix os:    <http://a9.com/-/spec/opensearch/1.1/> .
@prefix gsp:   <http://www.opengis.net/ont/geosparql#> .
@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
@prefix skos:  <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix eo:    <http://a9.com/-/opensearch/extensions/eo/1.0/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix geo:   <http://a9.com/-/opensearch/extensions/geo/1.0/> .
@prefix dct:   <http://purl.org/dc/terms/> .
@prefix sru:   <http://a9.com/-/opensearch/extensions/sru/2.0/> .
@prefix ldp:   <http://www.w3.org/ns/ldp#> .
@prefix iana:  <http://www.iana.org/assignments/relation/> .
@prefix owc:   <http://www.opengis.net/ont/owc/1.0/> .
@prefix time:  <http://a9.com/-/opensearch/extensions/time/1.0/> .
@prefix dcat:  <http://www.w3.org/ns/dcat#> .
@prefix atom:  <http://www.w3.org/2005/Atom/> .
@prefix locn:  <http://www.w3.org/ns/locn#> .
@prefix prov:  <http://www.w3.org/ns/prov#> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix dc:    <http://purl.org/dc/elements/1.1/> .

<https://gcmd.earthdata.nasa.gov/kms/concept/91697b7d-8f2b-4954-850e-61d5f61c867d>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords" ;
        skos:prefLabel  "EARTH SCIENCE>OCEANS" .

<https://gcmd.earthdata.nasa.gov/kms/concept/24536b41-a968-4626-9516-7cf4c158334c>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "MWR" .

<https://esatellus.service-now.com/csp?id=esa_simple_request>
        a                foaf:Document ;
        dct:description  "ESA Earth Observation User Services Portal"@en ;
        dct:title        "Get Help?"@en .

<https://earth.esa.int/documents/d/earth-online/fdr4alt-products-user-guide>
        a                foaf:Document ;
        dct:description  "User Guide"@en ;
        dct:title        "FDR4ALT Product User Guide"@en .

<https://www.fdr4alt.org/>
        a                foaf:Document ;
        dct:description  "Website"@en ;
        dct:title        "FDR4ALT Project Website"@en .

<https://gcmd.earthdata.nasa.gov/kms/concept/affbd015-9373-4413-b76f-e91d01c4f5e3>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms" ;
        skos:prefLabel  "ERS-2" .

<https://fedeo.ceos.org/collections/TDPforSeaice>
        a                          dcat:Dataset ;
        dct:accessRights           [ a           dct:RightsStatement ;
                                     rdfs:label  "Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions. https://earth.esa.int/eogateway/documents/20142/1564626/Terms-and-Conditions-for-the-use-of-ESA-Data.pdf"
                                   ] ;
        dct:bibliographicCitation  "European Space Agency, 2023, FDR4ALT Sea-Ice Thematic Data Product. Version 1.0." ;
        dct:description            "This is the Sea Ice Thematic Data Product (TDP) V1 resulting from the _$$ESA FDR4ALT project$$ https://www.fdr4alt.org/ and containing the sea ice related geophysical parameters, along with associated uncertainties: snow depth, radar and sea-ice freeboard, sea ice thickness and concentration.\rThe collection covers data for the ERS-1, ERS-2 and Envisat missions, and bases on Level 1 data coming from previous reprocessing (ERS REAPER and the Envisat V3.0) but taking into account the improvements made at Level 0/Level 1 in the frame of FDR4ALT (_$$ALT FDR$$ https://earth.esa.int/eogateway/catalog/fdr-for-altimetry).\rThe Sea Ice TDP provides data from the northern or southern hemisphere in two files corresponding to the Arctic and Antarctic regions respectively for the winter periods only, i.e., October to June for the Arctic, and May to November for the Antarctic.\rFor many aspects, the Sea Ice TDP is very innovative: \r\rFirst time series of sea-ice thickness estimates for ERS\rHomogeneous calibration, allowing the first Arctic radar freeboard time series from ERS-1 (1991) to CryoSat-2 (2021)\rUncertainties estimated along-track with a bottom-up approach based on dominant sources \rERS pulse blurring error corrected using literature procedure [Peacock, 2004] \rThe FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used.\rInformation for expert altimetry users is also available in a dedicated NetCDF group within the products.\rPlease consult the _$$FDR4ALT Product User Guide$$ https://earth.esa.int/eogateway/documents/d/earth-online/fdr4alt-products-user-guide before using the data.\rThe FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results." ;
        dct:identifier             "TDPforSeaice" ;
        dct:language               <http://publications.europa.eu/resource/authority/language/EN> ;
        dct:license                [ a           dct:LicenseDocument ;
                                     rdfs:label  "EO Sign In Authentication"
                                   ] ;
        dct:license                [ a           dct:LicenseDocument ;
                                     rdfs:label  "Open data"
                                   ] ;
        dct:license                [ a           dct:LicenseDocument ;
                                     rdfs:label  "World Wide"
                                   ] ;
        dct:license                [ a           dct:LicenseDocument ;
                                     rdfs:label  "EO Sign In Authentication (Open)  1.Go to the _$$Dissemination Service$$ https://hm-lbr-ds.eo.esa.int/oads/access/collection/TDPforSeaice 2.Find the product you want using the search options 3.Register or log in to EO Sign In 4.Download (via HTTPS or FTPS)"
                                   ] ;
        dct:license                [ a           dct:LicenseDocument ;
                                     rdfs:label  "The _$$dissemination service$$ https://hm-lbr-ds.eo.esa.int/oads/access/collection provides data generated within the ESA FDR4ALT project.  The data is collection based and allows data browsing and download via treeview, filename or advanced catalogue search.  Data download is available via HTTPS, including bulk download functionality. ESA internal users can use their ESAAD account to access the HTTPS Dissemination Service.   Access to ftps://hm-lbr-ds.eo.esa.int is available via common FTP clients using “implicit FTP over TLS” and your own EO Sign In credentials. For internal ESA users the ESAAD account cannot be used for FTP access.   New users can register an account on EO Sign In. For further information about the EO Sign In Service you can visit _$$TellUs$$ https://esatellus.service-now.com/csp?id=esa_faq&kb_category=3e0b38dedb212700ee849785ca96194e.  Should you need support to access the data, please contact _$$EOHelp$$ http://esatellus.service-now.com/csp?id=esa_simple_request&sys_id=f27b38f9dbdffe40e3cedb11ce961958."
                                   ] ;
        dct:modified               "2024-04-22T00:00:00.000Z" ;
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                                   ] ;
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                                   ] ;
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                                     dct:title     "STAC metadata" ;
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        a               prov:Entity , skos:Concept ;
        dct:title       "ERS-2" ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/platforms" ;
        skos:prefLabel  "ERS-2" .

<https://earth.esa.int/concept/41660a0e-b024-5f96-bac7-03d20444800b>
        a               prov:Entity , skos:Concept ;
        dct:title       "ERS-1" ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/platforms" ;
        skos:prefLabel  "ERS-1" .

<https://earth.esa.int/concept/27547a00-7d37-5113-b10f-666ccbfd86d4>
        a               prov:Entity , skos:Concept ;
        dct:title       "RA" ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "RA" .

<https://earth.esa.int/documents/d/earth-online/fdr4alt-uncertainties-characterisations>
        a                foaf:Document ;
        dct:description  "Report"@en ;
        dct:title        "FDR4ALT Uncertainty Characterisation Report"@en .

<https://earth.esa.int/concept/eef7ff15-c5e7-5d18-bcce-8f9dc6bbe289>
        a               skos:Concept ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/earth-topics" ;
        skos:prefLabel  "Sea Ice" .

<https://gcmd.earthdata.nasa.gov/kms/concept/9873d448-7c5c-4d0b-b699-8683aa37dd4c>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "RA" .

<https://gcmd.earthdata.nasa.gov/kms/concept/fa0a36c3-2503-4662-98cd-7f3e74ce9f80>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords" ;
        skos:prefLabel  "EARTH SCIENCE>CRYOSPHERE" .

<https://earth.esa.int/concept/e6a9631e-b7cf-5b3e-b414-1600379a72b3>
        a               skos:Concept ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/earth-topics" ;
        skos:prefLabel  "Cryosphere" .

<https://earth.esa.int/concept/90c5a05d-6f00-5187-90b5-2963273124ed>
        a               prov:Entity , skos:Concept ;
        dct:title       "MWR" ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "MWR" .

<https://gcmd.earthdata.nasa.gov/kms/concept/02c85d04-228e-4bf3-bb03-d72c22681dff>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms" ;
        skos:prefLabel  "ERS-1" .

<https://earth.esa.int/documents/d/earth-online/fdr4alt-product-requirements-format-specifications>
        a                foaf:Document ;
        dct:description  "Product Specifications"@en ;
        dct:title        "FDR4ALT Products Requirements and Format Specification"@en .

<https://earth.esa.int/concept/66ab957a-0434-5953-8b33-be95150a9ecb>
        a               skos:Concept ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "Imaging Spectrometers/Radiometers" .

<https://earth.esa.int/documents/d/earth-online/fdr4alt-detailed-processing-model>
        a                foaf:Document ;
        dct:description  "Processing Model"@en ;
        dct:title        "FDR4ALT Detailed Processing Model"@en .

<https://earth.esa.int/concept/9a043c1c-b79e-56ea-8d29-ce17037667ef>
        a               skos:Concept ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "Radar Altimeters" .

<https://gcmd.earthdata.nasa.gov/kms/concept/a3cf784c-00ad-455a-8961-ae9dcec76712>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments" ;
        skos:prefLabel  "RA-2" .

<https://earth.esa.int/concept/8dc47b68-6cad-59ce-836f-7328372de417>
        a               skos:Concept ;
        skos:inScheme   "https://earth.esa.int/concepts/concept_scheme/earth-topics" ;
        skos:prefLabel  "Oceans" .

<https://gcmd.earthdata.nasa.gov/kms/concept/860e2af9-ce29-4f3f-b027-ae3747eb3e01>
        a               skos:Concept ;
        skos:inScheme   "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords" ;
        skos:prefLabel  "EARTH SCIENCE>CRYOSPHERE>SEA ICE" .

<https://earth.esa.int/documents/d/earth-online/fdr4alt-validation-report-tdp-sea-ice>
        a                foaf:Document ;
        dct:description  "Ice TDP - Product Document"@en ;
        dct:title        "FDR4ALT Product Validation Report: Sea"@en .

<https://fedeo.ceos.org/collections/TDPforSeaice?httpAccept=application/vnd.iso.19139-2%2Bxml>
        a               dcat:CatalogRecord ;
        dct:conformsTo  [ a          dct:Standard ;
                          dct:title  "ISO19139-2"
                        ] .