Related URLs

Element Description

The Related URLs element provides access to resources related to a collection. The Related URL may also link to data access points, as well as relevant tools and services.

Note: This wiki page pertains to Related URLs in collection level metadata. For guidance on Related URLs in granule level metadata, please see the RelatedURLs (GRANULES) wiki page.

Best Practices

The Related URLs metadata element allows for the linkage of a metadata record to external resources or locations on the web. When used properly, this element allows users to quickly and easily access data, as well as access relevant services and information about the data. Related URLs at the collection level should point to:

A data access location
A landing page for the associated data set
Any relevant services provided for the data (if applicable) such as: Web Map Services (WMS), OPeNDAP, THREDDS, Web Map Tile Services (WMTS), Web Coverage Services (WCS), etc.
A user's guide and/or comparable documentation which provides important information about how to use the data
The project home page
Relevant software packages
Relevant online data tools
Relent PI documentation
Read-Me files
Data citation policies
Algorithm Theoretical Basis Document (ATBD)
Any other documentation directly related to the data set (examples include: data recipes, micro articles, product quality assessment documentation, important announcements, documentation on data set anomalies, etc.)

There are two special sub-sections within Related URLs. These include the GET DATA and the USE SERVICE API sub-elements. A separate wiki page with full details has been developed for each of these sub-sections:

Related URLs (GET DATA)

Related URLs (USE SERVICE API)

The details on this wiki page are for general Related URL guidance and do not include any of the GET DATA or USE SERVICE API sub-elements.

Several of the elements within the Related URLs section of the metadata serve to properly identify the purpose of the link. These identifying elements include:

URL Content Type: The URL Content Type is a keyword which, at a high level, describes the content of a link. This is a controlled vocabulary field maintained as an enumeration list within the UMM-Common schema with the following options: "CollectionURL", "PublicationURL", "DataCenterURL", "DistributionURL", "DataContactURL", "VisualizationURL". The URL Content Type helps specify how the URL will be displayed in the Earthdata Search Client.

URL Type: The URL Type is a keyword which specifies the content of a link. URL Type keywords are maintained in the Keyword Management System (KMS). A list of valid URL Type keywords can be found here: https://gcmdservices.gsfc.nasa.gov/static/kms/rucontenttype/rucontenttype.csv? Note that the keyword list does not include the upper level URL Content Type keywords (specified above & maintained in the UMM schema). Please see the diagram below for details on the relationship between URL Content Type keywords and URL Type keywords.

URL Subtype: The URL Subtype is a keyword which further specifies the content of a link. Together, the URL Type and Subtype keywords create a keyword hierarchy which is used to identify the URL. Providing a Subtype is optional, but should be used when applicable. The URL Subtype keywords are maintained in the Keyword Management System (KMS). A list of valid URL Subtype keywords can be found here: https://gcmdservices.gsfc.nasa.gov/static/kms/rucontenttype/rucontenttype.csv?

Description: While not required, it is highly recommended that a description be provided for each URL provided in the metadata. The description should be kept brief and explain where the link navigates and the type of information it contains. Descriptions should be unique to the link. While descriptions can be repeated for the same type of URL across different metadata records, it is generally advised that the same description not be repeated within the same metadata record. I.e. the description should be used to further differentiate two URLs with the same URL Type and Subtype.

Please see the below diagram for the full relationship between URL Content Type, Type, and Subtype keywords:

Examples:

URL: https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html

URL Content Type: PublicationURL

URL Type: VIEW RELATED INFORMATION

URL Subtype: USER'S GUIDE

Description: The guide document contains detailed information about the data set.

URL: https://ghrc.nsstc.nasa.gov/home/micro-articles/lake-effect-snow

URL Content Type: PublicationURL

URL Type: VIEW RELATED INFORMATION

URL Subtype: MICRO ARTICLE

Description: Learn about how AMSR-2 data can be used to study lake effect snow in this micro article.

Element Specification

An unlimited amount of Related URLs may be listed (Cardinality: 0..*)

Model	Element	Type	Usable Valid Values	Constraints	Required?	Cardinality	Notes
UMM-Common	RelatedUrls/URL	String	n/a	1 - 1024 characters	Yes	1
UMM-Common	RelatedUrls/Description	String	n/a	1 - 4000 characters	No	0..1	It is strongly recommended that a description be provided for each URL.
UMM-Common	RelatedUrls/URLContentType	Enumeration	CollectionURL PublicationURL DataCenterURL DistributionURL DataContactURL VisualizationURL	n/a	Yes	1	The DataCenterURL option is only valid in the Data Centers section of the metadata. The DataContactURL option is only valid in the Data Contacts section of the metadata.
UMM-Common	RelatedUrls/Type	String	KMS controlled	n/a	Yes	1	Each Type keyword corresponds to a specific URL Content Type category.
UMM-Common	RelatedUrls/Subtype	String	KMS controlled	n/a	No	0..1	The Type and Subtype are part of a keyword hierarchy specified in the KMS.

Metadata Validation and QA/QC

All metadata entering the CMR goes through the below process to ensure metadata quality requirements are met. All records undergo CMR validation before entering the system. The process of QA/QC is slightly different for NASA and non-NASA data providers. Non-NASA providers include interagency and international data providers and are referred to as the International Directory Network (IDN).

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Please see the expandable sections below for flowchart details.

GCMD Metadata QA/QC

CMR Validation

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ARC Metadata QA/QC

ARC Priority Matrix

Priority Categorization	Justification
	This element is categorized as highest priority when: No Related URLs are provided. No data access URL is provided. For further details on data access URLs please see the Related URLs (GET DATA) wiki page. There is a service available for a collection, but no service URL is provided. For further details on service URLs please see the Related URLs (USE SERVICE API) wiki page. The URL provided is broken. The URL provided is incorrect/ unrelated to the associated data set. The URL Type or Subtype provided does not accurately describe the link (i.e. the link is mislabeled). The URL Type or Subtype provided does not align with the KMS. The Type or Subtype does not exist in the KMS. The Type or Subtype is placed in the incorrect position of the hierarchy (e.g. GET DATA should not be provided in the Subtype field, because it is categorized as a Type keyword in the KMS). There is an invalid Type/Subtype relationship (e.g. Type: GET DATA, Subtype: USER'S GUIDE, is not a valid combination in the KMS). The URL links to an FTP server (this only applies to NASA EOSDIS metadata).
	This element is categorized as medium priority when: The 'Description' element is left blank. It is highly recommended that a description be provided for each URL. A recommendation is made to change a valid URL Type or Subtype keyword for purposes of consistency with other similar metadata records. The URL provided in the metadata redirects --- it is recommended that the most current link always be provided. A noted exception to this is DOI URLs (e.g. https://doi.org/10.3334/ORNLDAAC/1416) since these will always re-direct.
	This element is categorized as low priority when: The 'Description' element is identical for multiple URLs. If a recommendation is made to add a URL to the metadata, there will be accompanying blue recommendations to add the appropriate URLContentType/URLType/Subtype elements. A URL is provided via http when https is available.
	The element is provided and follows all applicable criteria specified in the best practices section above.

ARC Automated Rules

If no value is provided, return is: "Recommend providing a Related URL. This is a required field."
If a value is provided, the URL is put through a URL checker:
- Checks if the link starts with 'https'
- Checks for https return status codes (200, 302, 400, 403, 404, 500, 502, 503, 504)
- If all checks are passed, return is: "OK"

Dialect Mappings

DIF 9

DIF 9 ^{(Note: DIF-9 is being phased out and will no longer be supported after 2018)}

DIF 10

An unlimited amount of Related_URLs may be listed (Cardinality: 0..*)

Specification	Path	Type	Usable Valid Values	Required in DIF 10?	Cardinality	Notes
DIF 10	/DIF/Related_URL/URL	URI		No	0..*	The link is provided here.
DIF 10	/DIF/Related_URL/URL_Content_Type/Type	String	KMS controlled	No	0..1
DIF 10	/DIF/Related_URL/URL_Content_Type/Subtype	String	KMS controlled	No	0..1	The Type and Subtype are part of a keyword hierarchy specified in the KMS. If none of the available Subtypes are appropriate for the URL, then it is okay to leave the Subtype field blank.
DIF 10	/DIF/Related_URL/Description	String		No	0..1	It is strongly recommended that a description be provided for each URL.
DIF 10	/DIF/Related_URL/Mime_Type	String	KMS controlled	No	0..1
DIF 10	/DIF/Related_URL/Protocol	String		No	0..1
DIF 10	/DIF/Related_URL/Title	String		No	0..1
DIF 10	/DIF/Related_URL/Application_Profile	String		No	0..1
DIF 10	/DIF/Related_URL/Function	String		No	0..1

Example Mapping

DIF 10

<Related_URL>
  <URL_Content_Type>
    <Type>DATA SET LANDING PAGE</Type>
  </URL_Content_Type>
  <URL>https://doi.org/10.3334/ORNLDAAC/1568</URL>

  <Description>Access the data set landing page for the collection.</Description>
</Related_URL>

<Related_URL>
  <URL_Content_Type>
    <Type>VIEW RELATED INFORMATION</Type>
    <Subtype>USER'S GUIDE</Subtype>
  </URL_Content_Type>
  <URL>https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html</URL>

  <Description>The guide document contains detailed information about the data set.</Description>
</Related_URL>

UMM

RelatedUrls: [
  {
    Description: "Access the data set landing page for the collection.",
    URLContentType: "CollectionURL",
    Type: "DATA SET LANDING PAGE",
    URL:  "https://doi.org/10.3334/ORNLDAAC/1568",
  },
  {
    Description: "The guide document contains detailed information about the data set.",
    URLContentType: "PublicationURL",
    Type: "VIEW RELATED INFORMATION",
    Subtype: "USER'S GUIDE",
    URL:  "https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html"
  }
]

ECHO 10

An unlimited amount of OnlineResources and/or AssociatedBrowseImageUrls may be listed (Cardinality: 0..*)

Specification	Path	Type	Usable Valid Values	Required in ECHO10?	Cardinality	Notes
ECHO 10	/Collection/OnlineResources/OnlineResource/URL	String		Yes	1
ECHO 10	/Collection/OnlineResources/OnlineResource/Description	String		No	0..1
ECHO 10	/Collection/OnlineResources/OnlineResource/Type	String	KMS controlled	Yes	1	ECHO 10 only has a single URL Type field (not a Type and Subtype field). Thus, a URL Type may be selected from either the URL Type or Subtype keywords.
ECHO 10	/Collection/OnlineResources/OnlineResource/MimeType	String	KMS controlled	No	0..1	It is recommended that a mime type always be provided for service URLs.
ECHO 10	/Collection/AssociatedBrowseImageUrls/ProviderBrowseUrl/URL	String		No	0..1	This element can be used to link to a browse image. Browse images may also be provided as an Online Resource URL. Use of the Associated Browse URL element is discouraged in favor of the Online Resource URL.
ECHO 10	/Collection/AssociatedBrowseImageUrls/ProviderBrowseUrl/Description	String		No	0..1	A brief explanation/ description of the browse image.

Example Mapping

ECHO 10

<OnlineResources>
  <OnlineResource>
    <URL>https://doi.org/10.3334/ORNLDAAC/1568</URL>
    <Description>Access the data set landing page for the collection.</Description>
    <Type>DATA SET LANDING PAGE</Type>
  </OnlineResource>
  <OnlineResource>
    <URL>https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html</URL>
    <Description>The guide document contains detailed information about the data set.</Description>
    <Type>USER'S GUIDE</Type>
  </OnlineResource>
  <OnlineResource>
    <URL>https://daac.ornl.gov/graphics/browse/project/act-america_logo.png</URL>
    <Description>Browse Image</Description>
    <Type>GET RELATED VISUALIZATION</Type>
    <MimeType>image/png</MimeType>
  </OnlineResource>
</OnlineResources>

UMM

RelatedUrls: [
  {
    Description: "Access the data set landing page for the collection.",
    URLContentType: "CollectionURL",
    Type: "DATA SET LANDING PAGE",
    URL:  "https://doi.org/10.3334/ORNLDAAC/1568",
  },
  {
    Description: "The guide document contains detailed information about the data set.",
    URLContentType: "PublicationURL",
    Type: "VIEW RELATED INFORMATION",
    Subtype: "USER'S GUIDE",
    URL:  "https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html"
  },
  {
    Description: "Browse Image",
    URLContentType: "VisualizationURL",
    Type: "GET RELATED VISUALIZATION",
    URL: "https://daac.ornl.gov/graphics/browse/project/act-america_logo.png"
  }
]

ISO 19115-2 MENDS

An unlimited amount of Related URLs may be listed (Cardinality: 0..*)

Note: These ISO paths only apply to CollectionURLs and PublicationURLs. Please see the RelatedURLs (GET DATA) wiki page for ISO guidance specific to data access URLs. Please see the RelatedURLs (USE SERVICE API) wiki page for ISO guidance specific to services. Please see the Data Center wiki page for ISO guidance specific to DataCenterURLs. Please see the Data Contact wiki page for ISO guidance specific to DataCenterURLs.

Specification	Path	Type	Notes
ISO 19115-2 MENDS	/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL	String	Where the URL is provided. Maps to the UMM element "RelatedUrls/URL" Note: This path only applies to CollectionURLs and PublicationURLs.
ISO 19115-2 MENDS	/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="Description: "	String	Maps to the UMM element "RelatedUrls/Description" A brief, unique description of the URL should be provided in this field. It is highly recommended that a description be provided for each URL. * The character string should always start with the prefix "Description: " in order for CMR to properly parse out the URL description.
ISO 19115-2 MENDS	/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="URLContentType: "	String	Maps to the UMM element "RelatedUrls/URLContentType" The URL Content Type is required in UMM and is used to specify how the link will display in the Earthdata Search Client. The URL Content Type must be selected from the following controlled vocabulary options: CollectionURL, PublicationURL, DataCenterURL, DistributionURL, DataContactURL, VisualizationURL. Please see the best practices section (above) on guidance on choosing the correct URL Content Type. * The character string should always start with the prefix "URLContentType: " in order for CMR to properly parse out the URL Content Type.
ISO 19115-2 MENDS	/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="Type: "	String	Maps to the UMM element "RelatedUrls/Type" Providing a URL Type is required in UMM. Failing to specify a Type in ISO metadata will result in the field being auto-populated by the CMR, which could result in the URL being mislabeled. URL Type is a GCMD controlled vocabulary field and must be selected from keywords in the KMS. Please see the best practices section (above) on guidance on choosing the correct URL Type. * The character string should always start with the prefix "Type: " in order for CMR to properly parse out the URL Type.
ISO 19115-2 MENDS	/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:aggregationInfo/ gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="Subtype: "	String	Maps to the UMM element "RelatedUrls/Subtype" Providing a URL Subtype is optional, but is encouraged if an appropriate URL Subtype exists. URL Subtype is a GCMD controlled vocabulary field and must be selected from keywords in the KMS. Please see the best practices section (above) on guidance on choosing the correct URL Subtype. * The character string should always start with with the prefix "Subtype: " in order for CMR to properly parse out the URL Subtype.

Example Mapping

ISO 19115-2 MENDS

<gmi:MI_Metadata>
...
  <gmd:identificationInfo>
  <gmd:MD_DataIdentification>
    <gmd:aggregationInfo>
    <gmd:MD_AggregateInformation>
      <gmd:aggregateDataSetName>
        <gmd:CI_Citation>
          <gmd:citedResponsibleParty>
          <gmd:CI_ResponsibleParty>
            <gmd:contactInfo>
              <gmd:onlineResource>
              <gmd:CI_OnlineResource>
                <gmd:linkage>
                  <gmd:URL>https://doi.org/10.3334/ORNLDAAC/1568</gmd:URL>
                </gmd:linkage>
                <gmd:description>
                  <gco:CharacterString>Description: Access the data set landing page for the collection. URLContentType: CollectionURL URLType: DATA SET LANDING PAGE</gco:CharacterString>
                </gmd:description>
              </gmd:CI_OnlineResource>
              </gmd:onlineResource>
            </gmd:contactInfo>
          </gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
          <gmd:citedResponsibleParty>
          <gmd:CI_ResponsibleParty>
            <gmd:contactInfo>
              <gmd:onlineResource>
              <gmd:CI_OnlineResource>
                <gmd:linkage>
                  <gmd:URL>https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html</gmd:URL>
                </gmd:linkage>
                <gmd:description>
                  <gco:CharacterString>Description: The guide document contains detailed information about the data set. URLContentType: PublicationURL URLType: VIEW RELATED INFORMATION URLSubtype: USER'S GUIDE</gco:CharacterString>
                </gmd:description>
              </gmd:CI_OnlineResource>
              </gmd:onlineResource>
            </gmd:contactInfo>
          </gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
        </gmd:CI_Citation>
      </gmd:aggregateDataSetName>
    </gmd:MD_AggregateInformation>
    </gmd:aggregationInfo>
  </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
...
</gmi:MI_Metadata>       







            <gmd:aggregationInfo>
                <gmd:MD_AggregateInformation>
                    <gmd:aggregateDataSetName>
                        <gmd:CI_Citation>
                            <gmd:title gco:nilReason="missing"/>
                            <gmd:date gco:nilReason="missing"/>
                            <gmd:citedResponsibleParty>
                                <gmd:CI_ResponsibleParty>
                                    <gmd:contactInfo>
                                    <gmd:CI_Contact>
                                    <gmd:onlineResource>
                                    <gmd:CI_OnlineResource>
                                    <gmd:linkage>
                                    <gmd:URL>https://dx.doi.org/10.5067/ZX7YX2Y2LHEB</gmd:URL>
                                    </gmd:linkage>
                                    <gmd:description>
                                    <gco:CharacterString>Description:Provides access to data, documentation, tools, citation information, support, and other resources. URLContentType:CollectionURL Type:DATA SET LANDING PAGE</gco:CharacterString>
                                    </gmd:description>
                                    </gmd:CI_OnlineResource>
                                    </gmd:onlineResource>
                                    </gmd:CI_Contact>
                                    </gmd:contactInfo>
                                    <gmd:role gco:nilReason="missing"/>
                                </gmd:CI_ResponsibleParty>
                            </gmd:citedResponsibleParty>
                        </gmd:CI_Citation>
                    </gmd:aggregateDataSetName>
                    <gmd:associationType gco:nilReason="missing"/>
                </gmd:MD_AggregateInformation>
            </gmd:aggregationInfo>

UMM

RelatedUrls: [
  {
    Description: "Access the data set landing page for the collection.",
    URLContentType: "CollectionURL",
    Type: "DATA SET LANDING PAGE",
    URL:  "https://doi.org/10.3334/ORNLDAAC/1568",
  },
  {
    Description: "The guide document contains detailed information about the data set.",
    URLContentType: "PublicationURL",
    Type: "VIEW RELATED INFORMATION",
    Subtype: "USER'S GUIDE",
    URL:  "https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html"
  }
]

ISO 19115-2 SMAP

An unlimited amount of Related URLs may be listed (Cardinality: 0..*)

Note: These ISO paths only apply to CollectionURLs and PublicationURLs. Please see the RelatedURLs (GET DATA) wiki page for ISO guidance specific to data access URLs. Please see the RelatedURLs (USE SERVICE API) wiki page for ISO guidance specific to services. Please see the Data Center wiki page for ISO guidance specific to DataCenterURLs. Please see the Data Contact wiki page for ISO guidance specific to DataCenterURLs.

Specification	Path	Type	Notes
ISO 19115-2 SMAP	gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL	String	Where the URL is provided. Maps to the UMM element "RelatedUrls/URL" Note: This path only applies to CollectionURLs and PublicationURLs.
ISO 19115-2 SMAP	gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="Description:"	String	Maps to the UMM element "RelatedUrls/Description" It is highly recommended that a description be provided for each URL. Provide a brief, unique description of the URL in this field. The value must start with the string "Description: " in order for CMR to properly identify the URL description.
ISO 19115-2 SMAP	gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="URLContentType:"	String	Maps to the UMM element "RelatedUrls/URLContentType" The value must start with the string "URLContentType: " in order for CMR to properly identify the URL Content Type. The URL Content Type is required in UMM and is used to specify how the link will display in the Earthdata Search Client. The URL Content Type must be selected from the following controlled vocabulary options: CollectionURL, PublicationURL, DataCenterURL, DistributionURL, DataContactURL, VisualizationURL. Please see the best practices section (above) on guidance on choosing the correct URL Content Type.
ISO 19115-2 SMAP	gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="Type:"	String	Maps to the UMM element "RelatedUrls/Type." The value must start with the string "Type: " in order for CMR to properly identify the URL Type. Providing a URL Type is required in UMM. Failing to specify a Type in ISO metadata will result in the field being auto-populated by the CMR, which could result in the URL being mislabeled. URL Type is a GCMD controlled vocabulary field and must be selected from keywords in the KMS. Please see the best practices section (above) on guidance on choosing the correct URL Type.
ISO 19115-2 SMAP	gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/ gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/ gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/ gmd:contactInfo/gmd:onlineResource/gmd:CI_OnlineResource/gmd:description/gco:CharacterString="Subtype:	String	Maps to the UMM element "RelatedUrls/Subtype" The value must start with the string "Subtype: " in order for CMR to properly identify the URL Subtype. Providing a URL Subtype is optional, but is encouraged if an appropriate URL Subtype exists. URL Subtype is a GCMD controlled vocabulary field and must be selected from keywords in the KMS. Please see the best practices section (above) on guidance on choosing the correct URL Subtype.

Example Mapping

ISO 19115-2 SMAP

<gmd:DS_Series>
<gmd:seriesMetadata>
<gmi:MI_Metadata>
...
  <gmd:identificationInfo>
  <gmd:MD_DataIdentification>
    <gmd:aggregationInfo>
    <gmd:MD_AggregateInformation>
      <gmd:aggregateDataSetName>
        <gmd:CI_Citation>
          <gmd:citedResponsibleParty>
          <gmd:CI_ResponsibleParty>
            <gmd:contactInfo>
              <gmd:onlineResource>
              <gmd:CI_OnlineResource>
                <gmd:linkage>
                  <gmd:URL>https://doi.org/10.3334/ORNLDAAC/1568</gmd:URL>
                </gmd:linkage>
                <gmd:description>
                  <gco:CharacterString>Description: Access the data set landing page for the collection. URLContentType: CollectionURL URLType: DATA SET LANDING PAGE</gco:CharacterString>
                </gmd:description>
              </gmd:CI_OnlineResource>
              </gmd:onlineResource>
            </gmd:contactInfo>
          </gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
          <gmd:citedResponsibleParty>
          <gmd:CI_ResponsibleParty>
            <gmd:contactInfo>
              <gmd:onlineResource>
              <gmd:CI_OnlineResource>
                <gmd:linkage>
                  <gmd:URL>https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html</gmd:URL>
                </gmd:linkage>
                <gmd:description>
                  <gco:CharacterString>Description: The guide document contains detailed information about the data set. URLContentType: PublicationURL URLType: VIEW RELATED INFORMATION URLSubtype: USER'S GUIDE</gco:CharacterString>
                </gmd:description>
              </gmd:CI_OnlineResource>
              </gmd:onlineResource>
            </gmd:contactInfo>
          </gmd:CI_ResponsibleParty>
          </gmd:citedResponsibleParty>
        </gmd:CI_Citation>
      </gmd:aggregateDataSetName>
    </gmd:MD_AggregateInformation>
    </gmd:aggregationInfo>
  </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
...
</gmi:MI_Metadata> 
</gmd:seriesMetadata>  
</gmd:DS_Series>

UMM

RelatedUrls: [
  {
    Description: "Access the data set landing page for the collection.",
    URLContentType: "CollectionURL",
    Type: "DATA SET LANDING PAGE",
    URL:  "https://doi.org/10.3334/ORNLDAAC/1568",
  },
  {
    Description: "The guide document contains detailed information about the data set.",
    URLContentType: "PublicationURL",
    Type: "VIEW RELATED INFORMATION",
    Subtype: "USER'S GUIDE",
    URL:  "https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html"
  }
]

UMM Migration

None

Future Mappings

ISO 19115-1

An unlimited amount of Related URLs may be listed (Cardinality: 0..*)

Note: These ISO paths only apply to CollectionURLs and PublicationURLs. Please see the RelatedURLs (GET DATA) wiki page for ISO guidance specific to data access URLs. Please see the RelatedURLs (USE SERVICE API) wiki page for ISO guidance specific to services. Please see the Data Center wiki page for ISO guidance specific to DataCenterURLs. Please see the Data Contact wiki page for ISO guidance specific to DataCenterURLs.

Specification	Type	Notes
ISO 19115-1	String	Where the URL is provided. Maps to the UMM element "RelatedUrls/URL" Note: This path only applies to CollectionURLs and PublicationURLs.
ISO 19115-1	String	Maps to the UMM element "RelatedUrls/Description" It is highly recommended that a description be provided for each URL. Provide a brief, unique description of the URL in this field. The value must start with the string "Description: " in order for CMR to properly identify the URL description.
ISO 19115-1	String	Maps to the UMM element "RelatedUrls/URLContentType" The value must start with the string "URLContentType: " in order for CMR to properly identify the URL Content Type. The URL Content Type is required in UMM and is used to specify how the link will display in the Earthdata Search Client. The URL Content Type must be selected from the following controlled vocabulary options: CollectionURL, PublicationURL, DataCenterURL, DistributionURL, DataContactURL, VisualizationURL. Please see the best practices section (above) on guidance on choosing the correct URL Content Type.
ISO 19115-1	String	Maps to the UMM element "RelatedUrls/Type" The value must start with the string "Type: " in order for CMR to properly identify the URL Type. Providing a URL Type is required in UMM. Failing to specify a Type in ISO metadata will result in the field being auto-populated by the CMR, which could result in the URL being mislabeled. URL Type is a GCMD controlled vocabulary field and must be selected from keywords in the KMS. Please see the best practices section (above) on guidance on choosing the correct URL Type.
ISO 19115-1	String	Maps to the UMM element "RelatedUrls/Subtype" The value must start with the string "Subtype: " in order for CMR to properly identify the URL Subtype. Providing a URL Subtype is optional, but is encouraged if an appropriate URL Subtype exists. URL Subtype is a GCMD controlled vocabulary field and must be selected from keywords in the KMS. Please see the best practices section (above) on guidance on choosing the correct URL Subtype.

Example Mapping

ISO 19115-1

UMM

RelatedUrls: [
  {
    Description: "Access the data set landing page for the collection.",
    URLContentType: "CollectionURL",
    Type: "DATA SET LANDING PAGE",
    URL:  "https://doi.org/10.3334/ORNLDAAC/1568",
  },
  {
    Description: "The guide document contains detailed information about the data set.",
    URLContentType: "PublicationURL",
    Type: "VIEW RELATED INFORMATION",
    Subtype: "USER'S GUIDE",
    URL:  "https://daac.ornl.gov/ACTAMERICA/guides/ACTAMERICA-PICARRO_Ground.html"
  }
]

History

UMM Versioning

Version	Date	What Changed
1.10.0	5/2/2018	<>
1.9.0

ARC Documentation

Version	Date	What Changed	Author
1.0	7/25/18	Recommendations/priority matrix transferred from internal ARC documentation to wiki space	Jeanne' le Roux

Page tree

Related URLs

Element Description

Best Practices

Element Specification

Metadata Validation and QA/QC

Dialect Mappings

DIF 10

ECHO 10

ISO 19115-2 MENDS

ISO 19115-2 SMAP

UMM Migration

Future Mappings

ISO 19115-1

History

UMM Versioning

ARC Documentation