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Element Description

The Ancillary Keywords element allows metadata authors to provide words or phrases beyond the controlled Science Keyword vocabulary, to further describe the the collection.

Best Practices

The Ancillary Keywords element is optional and is an uncontrolled free-text field. It can be leveraged to provide any additional keywords needed to describe the collection in addition to the Science Keywords (which must be selected from a controlled vocabulary list). This can be useful for providing tags needed for other applications or for providing niche keywords which may not fit in the current scope of the controlled science keyword vocabulary. Ancillary keywords are indexed for search using the CMR API, however, they do not appear as faceted keywords in the Earthdata Search Client user interface.

Examples:

"Hurricane Katrina"

"Mineral Resources"

"BEDI"

"Modified SAVI"

"Discrete-Band Normalized Difference Water Index"

"Principal Component Analysis"

"Hydrology"

Element Specification

Providing Ancillary Keywords is optional. An unlimited number of Ancillary Keywords may be listed (Cardinality: 0..*)

Model	Element	Type	Constraints	Required?	Cardinality
UMM-C	AncillaryKeywords	String	1 - 255 characters	No	0..*

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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title	GCMD Metadata QA/QC

Manual Review
- Check that the purpose description is appropriate for the dataset.
Automated Review
- Check that the field has been populated.
- Check that the field length is not greater than 1000 characters.

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title	CMR Validation

If this element is used it must contain at least 1 character and be no longer than 255 characters in length.

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title	ARC Metadata QA/QC

ARC Priority Matrix

Priority Categorization	Justification
Red = High Priority Finding	This element is categorized as highest priority when: The ancillary keyword Ancillary Keyword contains a spelling error. The element is being used incorrectly.
Yellow = Medium Priority Finding	This element is categorized as medium priority when: A recommendation is made to change an existing keyword. The ancillary keyword is unnecessarily long. The keyword doesn't seem appropriate or in any way related to the dataset. N/A
Blue = Low Priority Finding	Not Applicable
Green = No Findings/Issues	The element is provided and follows all applicable criteria specified in the best practices section above.

ARC Automated Rules

If novalue is provided, return is "np."

Checks

ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information.

Otherwise, return is "OK."

Dialect Mappings

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title	DIF 9

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

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title	DIF 10

DIF 10

Providing Ancillary_Keywords is optional. An unlimited number of Ancillary_Keywords may be listed (Cardinality: 0..*)

UMM-C Element	DIF 10 Path	Type	Constraints	Required in DIF 10?	Cardinality
AncillaryKeywords	Ancillary_Keyword	String	n/a	No	0..*

Example Mapping

Section

Column

width	50%

DIF 10

No Format
<Ancillary_Keyword>Water Resources</Ancillary_Keyword> <Ancillary_Keyword>Energy and Mineral Resources</Ancillary_Keyword> <Ancillary_Keyword>Hydrology</Ancillary_Keyword>

Column

width	50%

UMM

No Format
"AncillaryKeywords": [ "Water Resources", "Energy and Mineral Resources", "Hydrology" ]

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title	ECHO 10

ECHO 10

Ancillary Keywords does not map to ECHO 10.

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title	ISO 19115-2 MENDS

ISO 19115-2 MENDS

Providing Ancillary Keywords is optional. An unlimited number of Ancillary Keywords may be listed (Cardinality: 0..*)

UMM-C Element	ISO Path	Type
AncillaryKeywords	/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharacterString	String

Example Mapping

Section

Column

width	50%

ISO 19115-2 MENDS

No Format

<gmi:MI_Metadata>
  ...
  <gmd:identificationInfo>
    <gmd:MD_DataIdentification>
      ...
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Water Resources</gco:CharacterString>
          </gmd:keyword>
          <gmd:keyword>
            <gco:CharacterString>Energy and Mineral Resources</gco:CharacterString>
          </gmd:keyword>
          <gmd:keyword>
            <gco:CharacterString>Hydrology</gco:CharacterString>
          </gmd:keyword>
          ...
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      ...
    </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
  ...
</gmi:MI_Metadata>

Column

width	50%

UMM

No Format
"AncillaryKeywords": [ "Water Resources", "Energy and Mineral Resources", "Hydrology" ]

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title	ISO 19115-2 SMAP

ISO 19115-2 SMAP

Providing Ancillary Keywords is optional. An unlimited number of Ancillary Keywords may be listed (Cardinality: 0..*)

UMM-C Element	ISO Path	Type
AncillaryKeywords	/gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharacterString	String

Example Mapping

Section

Column

width	50%

ISO 19115-2 SMAP

No Format

<gmd:DS_Series>
  <gmd:seriesMetadata>
    <gmi:MI_Metadata>
      ...
      <gmd:identificationInfo>
        <gmd:MD_DataIdentification>
          ...
          <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
              <gmd:keyword>
                <gco:CharacterString>Water Resources</gco:CharacterString>
              </gmd:keyword>
              <gmd:keyword>
                <gco:CharacterString>Energy and Mineral Resources</gco:CharacterString>
              </gmd:keyword>
              <gmd:keyword>
                <gco:CharacterString>Hydrology</gco:CharacterString>
              </gmd:keyword>
              ...
            </gmd:MD_Keywords>
          </gmd:descriptiveKeywords>
          ...
        </gmd:MD_DataIdentification>
      </gmd:identificationInfo>
      ...
    </gmi:MI_Metadata>
  </gmd:seriesMetadata>
</gmd:DS_Series>

Column

width	50%

UMM

No Format
"AncillaryKeywords": [ "Water Resources", "Energy and Mineral Resources", "Hydrology" ]

UMM Migration

None

Excerpt

hidden	true

Future Mappings

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title	ISO 19115-1

ISO 19115-1

Providing Ancillary Keywords is optional. An unlimited number of Ancillary Keywords may be listed (Cardinality: 0..*)

UMM-C Element	ISO Path	Type
AncillaryKeywords	/mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:descriptiveKeywords/mri:MD_Keywords/mri:keyword/gco:CharacterString	String

Example Mapping

Section

Column

width	50%

ISO 19115-1

No Format

<mdb:MD_Metadata>
  ...
  <mdb:identificationInfo>
    <mri:MD_DataIdentification>
      ...
      </mri:descriptiveKeywords>
        <mri:MD_Keywords>
          <mri:keyword>
            <gco:CharacterString>Water Resources</gco:CharacterString>
          </mri:keyword>
          <mri:keyword>
            <gco:CharacterString>Energy and Mineral Resources</gco:CharacterString>
          </mri:keyword>
          <mri:keyword>
            <gco:CharacterString>Hydrology</gco:CharacterString>
          </mri:keyword>
        </mri:MD_Keywords>
        ...
      </mri:descriptiveKeywords>
      ...
    </mri:MD_DataIdentification>
  </mdb:identificationInfo>
  ...
</mdb:MD_Metadata>

Column

width	50%

UMM

No Format
"AncillaryKeywords": [ "Water Resources", "Energy and Mineral Resources", "Hydrology" ]

History

UMM Versioning

Version	Date	What Changed
1.15.5	12/3/2020	No changes were made for Ancillary Keywords during the transition from version 1.15.4 to 1.15.5
1.15.4	9/18/2020	No changes were made for Ancillary Keywords during the transition from version 1.15.3 to 1.15.4
1.15.3	7/1/2020	No changes were made for Ancillary Keywords during the transition from version 1.15.2 to 1.15.3
1.15.2	5/20/2020	No changes were made for Ancillary Keywords during the transition from version 1.15.1 to 1.15.2
1.15.1	3/25/2020	No changes were made for Ancillary Keywords during the transition from version 1.15.0 to 1.15.1
1.15.0	2/26/2020	No changes were made for Ancillary Keywords during the transition from version 1.14.0 to 1.15.0
1.14.0	10/21/2019	No changes were made for Ancillary Keywords during the transition from version 1.13.0 to 1.14.0
1.13.0	04/11/2019	No changes were made for Ancillary Keywords during the transition from version 1.12.0 to 1.13.0
1.12.0	01/22/2019	No changes were made for Ancillary Keywords during the transition from version 1.11.0 to 1.12.0.
1.11.0	11/28/2018	No changes were made for Ancillary Keywords during the transition from version 1.10.0 to 1.11.0.
1.10.0	05/02/2018	No changes were made for Ancillary Keywords during the transition from version 1.9.0 to 1.10.0.

ARC Documentation

Version	Date	What Changed	Author
1.0	10/12/18	Recommendations/priority matrix transferred from internal ARC documentation to wiki space	Jeanne' le Roux

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Versions Compared

Old Version 23

New Version Current

Key

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