Page History

Table of Contents

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Element Description

Note: This page is a draft/ work in progress

The Location Keywords element contains keywords that characterize the study area/region where data was collected from. This allows users to narrow their searches to areas that suit their geographic interest. The Location Keywords are chosen from a controlled keyword hierarchy maintained in the Keyword Management System (KMS). A list of valid Location Keywords can be found here: https://gcmdservices.gsfc.nasa.gov/static/kms/locations/locations.csv ?

Best Practices

Location keywords specify areas where data was collected. The keywords can be chosen to classify broad study areas/regions or very specific places. However, it is suggested that location keywords are as specific as possible to aid in data discovery. At bare minimum, a location keyword/category is required in the hierarchy. If a a certain location keyword is not included in the KMS, a request to have it added can be made through the GCMD Keywords Community Forum.

Examples:

LocationKeywords/Category: "CONTINENT"

LocationKeywords/Topic: "NORTH AMERICA"

LocationKeywords/Subregion1: "UNITED STATES"

LocationKeywords/Subregion2: "ALABAMA"

LocationKeywords/Subregion3: "HUNTSVILLE"

LocationKeywords/DetailedLocation: "THE UNIVERSITY OF ALABAMA IN HUNTSVILLE"

LocationKeywords/Category: "CONTINENT"

LocationKeywords/Topic: "NORTH AMERICA"

LocationKeywords/Subregion1: "CANADA"

LocationKeywords/Subregion2: "ONTARIO"

LocationKeywords/Category: "GEOGRAPHIC REGION"

LocationKeywords/Topic: "TROPICS"

Element Specification

Science Location Keywords are required. An unlimited amount of Science Location Keywords may be provided (Cardinality: 1..*)

Model	Element	Type	Usable Valid Values	Constraints	Required?	Cardinality
UMM-C

ScienceKeywords

LocationKeywords/Category	String	Science Category Keywords	KMS controlled	Yes	1
UMM-C

ScienceKeywords

LocationKeywords/

Topic

Type

String

Science Topic Keywords

KMS controlled

Yes

No	0..1
UMM-C

ScienceKeywords

LocationKeywords/

Term

Subregion1

String

Science Term Keywords

KMS controlled

Yes

No	0..1
UMM-C

ScienceKeywords

LocationKeywords/

VariableLevel1

Subregion2	String	Science Variable_Level_1 Keywords	KMS controlled	No	0..1
UMM-C

ScienceKeywords

LocationKeywords/

VariableLevel2

Subregion3	String	Science Variable_Level_2 Keywords	KMS controlled	No	0..1
UMM-C	ScienceKeywords/

VariableLevel3String

Science Variable_Level_3 Keywords

KMS controlledNo0..1UMM-CScienceKeywords/DetailedVariable

DetailedLocation

String

1 - 80 characters (Uncontrolled/Free-Text)

No

0..1

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).

Lucidchart

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width	1102
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align	Left
height	299

Please see the expandable sections below for flowchart details.

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title	GCMD Metadata QA/QC

Manual Review
- Identify errors, discrepancies or omissions.
- Verify that all pertinent keywords have been applied.
- Verify that existing facets and other controlled keyword values are consistent and suitable for the data.
Automated Review
- Check that the field has been populated.
- Check that the field is populated with a valid value from KMS.
- Check that the field value is not a duplicate.
- Check that the 'Detailed_Variable' field length is not greater than 80 characters.

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title	ARC Metadata QA/QC

ARC Priority Matrix

Priority Categorization	Justification
	This element is categorized as highest priority when: The element is not included at all. The element is included but is empty. The science keyword does not align with the KMS. The science keyword does not exist in KMS. A keyword(s) is missing from the hierarchy. A keyword(s) is placed in the incorrect position of the hierarchy (e.g. a Variable Level 2 keyword is placed in the Variable Level 1 field). The science keyword is not appropriate for the dataset.
	This element is categorized as medium priority when: A recommendation is made to add a relevant science keyword to the metadata. A recommendation is made to add to an existing keyword in the metadata (i.e. i.e. to extend a keyword hierarchy down to a more detailed keyword).
	Not Applicable
	The element is provided and follows all applicable criteria specified in the best practices section above.

ARC Automated Checks

Category
- If no value is provided, return is: "This is a required field. Recommend providing at least one science keyword hierarchy relevant to this data set. This field should contain the Category keyword as specified in the hierarchy (EARTH SCIENCE). Science keywords are GCMD controlled and should be chosen from the following list: https://gcmdservices.gsfc.nasa.gov/static/kms/sciencekeywords/sciencekeywords.csv?ed_wiki_keywords_page"
- If the provided value is in the incorrect position of the hierarchy, return is: "<provided value> is in the incorrect position of the project keyword hierarchy."
- If the provided value does not conform to GCMD, return is: "<provided value> does not conform to GCMD."
Topic
- If no value is provided, return is: "This is a required field. Recommend providing at least one science keyword hierarchy relevant to this data set. This field should contain the Topic keyword as specified in the hierarchy. Science keywords are GCMD controlled and should be chosen from the following list: https://gcmdservices.gsfc.nasa.gov/static/kms/sciencekeywords/sciencekeywords.csv?ed_wiki_keywords_page"
- If the provided value is in the incorrect position of the hierarchy, return is: "<provided value> is in the incorrect position of the project keyword hierarchy."
- If the provided value does not conform to GCMD, return is: "<provided value> does not conform to GCMD."
Term
- If no value is provided, return is: "This is a required field. Recommend providing at least one science keyword hierarchy relevant to this data set. This field should contain the Term keyword as specified in the hierarchy. Science keywords are GCMD controlled and should be chosen from the following list: https://gcmdservices.gsfc.nasa.gov/static/kms/sciencekeywords/sciencekeywords.csv?ed_wiki_keywords_page"
- If the provided value is in the incorrect position of the hierarchy, return is: "<provided value> is in the incorrect position of the project keyword hierarchy."
- If the provided value does not conform to GCMD, return is: "<provided value> does not conform to GCMD."
Variable Level 1 - Variable Level 3
- If no value is provided, return is "np"
- If the provided value is in the incorrect position of the hierarchy, return is: "<provided value> is in the incorrect position of the project keyword hierarchy."
- If the provided value does not conform to GCMD, return is: "<provided value> does not conform to GCMD."
Detailed Variable
- If no value isprovided, return is "np"
- If a value is provided, return is "OK"

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title	CMR Validation

<>

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

Science_Keywords are required. An unlimited amount of Science Keywords may be provided (Cardinality: 1..*)

Specification	Path	Type	Constraints	Required in DIF 10?	Cardinality	Notes
DIF 10	/DIF/Science_Keywords/Category	String	KMS controlled	Yes	1	The category keyword will always be "EARTH SCIENCE"
DIF 10	/DIF/Science_Keywords/Topic	String	KMS controlled	Yes	1
DIF 10	/DIF/Science_Keywords/Term	String	KMS controlled	Yes	1
DIF 10	/DIF/Science_Keywords/Variable_Level_1	String	KMS controlled	No	0..1
DIF 10	/DIF/Science_Keywords/Variable_Level_2	String	KMS controlled	No	0..1
DIF 10	/DIF/Science_Keywords/Variable_Level_3	String	KMS controlled	No	0..1
DIF 10	/DIF/Science_Keywords/Detailed_Variable	String	1 - 80 characters (Uncontrolled/Free-Text)	No	0..1

Example Mapping

Section

Column

width	50%

DIF 10

No Format

<Science_Keywords>
  <Category>EARTH SCIENCE</Category>
  <Topic>BIOSPHERE</Topic>
  <Term>VEGETATION</Term>
  <Variable_Level_1>VEGETATION INDEX</Variable_Level_1>
  <Variable_Level_2>NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)</Variable_Level_2>
  <Detailed_Variable>0.9 DENSITY</Detailed_Variable>
</Science_Keywords>
<Science_Keywords>
  <Category>EARTH SCIENCE</Category>
  <Topic>BIOSPHERE</Topic>
  <Term>VEGETATION</Term>
  <Variable_Level_1>EVERGREEN VEGETATION</Variable_Level_1>
</Science_Keywords>

Column

width	50%

UMM

No Format

ScienceKeywords: [
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "VEGETATION INDEX"
    VariableLevel2: "NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)"
    DetailedVariable: "0.9 DENSITY"
  },
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "EVERGREEN VEGETATION"
  }
],

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title	ECHO 10

ECHO 10

Science Keywords are required. An unlimited amount of Science Keywords may be provided (Cardinality: 1..*)

Specification	Path	Type	Constraints	Required in ECHO10?	Cardinality	Notes
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/CategoryKeyword	String	KMS controlled	Yes	1	The category keyword will always be "EARTH SCIENCE"
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/TopicKeyword	String	KMS controlled	Yes	1
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/TermKeyword	String	KMS controlled	Yes	1
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/VariableLevel1Keyword/Value	String	KMS controlled	No	0..1
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/VariableLevel1Keyword/VariableLevel2Keyword/Value	String	KMS controlled	No	0..1
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/VariableLevel1Keyword/VariableLevel2Keyword/VariableLevel3Keyword/Value	String	KMS controlled	No	0..1
ECHO 10	/Collection/ScienceKeywords/ScienceKeyword/DetailedVariableKeyword	String	Uncontrolled (Free-Text)	No	0..1

Example Mapping

Section

Column

width	50%

ECHO 10

No Format

<ScienceKeyword>
  <CategoryKeyword>EARTH SCIENCE</CategoryKeyword> 
  <TopicKeyword>BIOSPHERE</TopicKeyword> 
  <TermKeyword>VEGETATION</TermKeyword> 
  <VariableLevel1Keyword>
    <Value>VEGETATION INDEX</Value>
      <VariableLevel2Keyword>
        <Value>NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)</Value>
      </VariableLevel2Keyword>
  </VariableLevel1Keyword>
  <DetailedVariableKeyword>0.9 DENSITY</DetailedVariableKeyword>
</ScienceKeyword>
<ScienceKeyword>
  <CategoryKeyword>EARTH SCIENCE</CategoryKeyword> 
  <TopicKeyword>BIOSPHERE</TopicKeyword> 
  <TermKeyword>VEGETATION</TermKeyword> 
  <VariableLevel1Keyword>
    <Value>EVERGREEN VEGETATION</Value>
  </VariableLevel1Keyword>
</ScienceKeyword>

Column

width	50%

UMM

No Format

ScienceKeywords: [
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "VEGETATION INDEX"
    VariableLevel2: "NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)"
    DetailedVariable: "0.9 DENSITY"
  },
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "EVERGREEN VEGETATION"
  }
],

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title	ISO 19115-2 MENDS

ISO 19115-2 MENDS

Science Keywords are required. An unlimited amount of Science Keywords may be provided (Cardinality: 1..*)

Specification

Path

Type

Notes

ISO 19115-2 MENDS

/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/ gmd:keyword/gco:CharacterString (list each value of the keyword hierarchy delimited by > )

String

KMS controlled. This is where the entire keyword hierarchy should be listed. Each keyword in the hierarchy must be separated by ">". If any keyword is missing and there exists a keyword later in the hierarchy (such as DetailedLocation), use NONE to fill in the values in between. The CMR will not translate the NONE values they are only used to place each keyword in its correct space in the hierarchy.

/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/ gmd:keyword/gmd:type/MD_KeywordTypeCode[@codeListValue="theme"]

Codelist

codeList=https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml #MD_KeywordTypeCode

Select the value "theme" from the codelist. This codelist value does not directly map to a UMM element; choosing "theme" indicates to CMR that the Science Keywords should be mapped.

Example Mapping

Section

Column

width	50%

ISO 19115-2 MENDS

No Format

...
<gmd:identificationInfo>
  <gmd:MD_DataIdentification>
    <gmd:descriptiveKeywords>
      <gmd:MD_Keywords>
        <gmd:keyword>
          <gco:CharacterString>EARTH SCIENCE&gt;BIOSPHERE&gt;VEGETATION&gt;VEGETATION INDEX&gt;NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)&gt;NONE&gt;0.9 DENSITY</CharacterString>
        </gmd:keyword>
        <gmd:keyword>
          <gco:CharacterString>EARTH SCIENCE&gt;BIOSPHERE&gt;VEGETATION&gt;EVERGREEN VEGETATION</CharacterString>
        </gmd:keyword>
        <gmd:type>
          <gmd:MD_KeywordTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
        </gmd:type>
      </gmd:MD_Keywords> 
    </gmd:descriptiveKeywords>
  </gmd:MD_DataIdentification>
</gmd:identificationInfo>
...

Column

width	50%

UMM

No Format

ScienceKeywords: [
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "VEGETATION INDEX"
    VariableLevel2: "NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)"
    DetailedVariable: "0.9 DENSITY"
  },
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "EVERGREEN VEGETATION"
  }
],

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title	ISO 19115-2 SMAP

ISO 19115-2 SMAP

Science Keywords are required. An unlimited amount of Science Keywords may be provided (Cardinality: 1..*)

Specification

Path

Type

Notes

ISO 19115-2 SMAP

/gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/ gmd:MD_Keywords/gmd:keyword/gco:CharacterString (list each value of the keyword hierarchy delimited by > )

String

KMS controlled. This is where the entire keyword hierarchy should be listed. Each keyword in the hierarchy must be separated by ">". If any keyword is missing and there exists a keyword later in the hierarchy (such as DetailedLocation), use NONE to fill in the values in between. The CMR will not translate the NONE values they are only used to place each keyword in its correct space in the hierarchy.

ISO 19115-2 SMAP

/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/ gmd:type/MD_KeywordTypeCode[@codeListValue="theme"]

Codelist

codeList=https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml #MD_KeywordTypeCode

Select the value "theme" from the codelist. This codelist value does not directly map to a UMM element; choosing "theme" indicates to CMR that the Science Keywords should be mapped.

Example Mapping

Section

Column

width	50%

ISO 19115-2 SMAP

No Format

...
<gmd:identificationInfo>
  <gmd:MD_DataIdentification>
    <gmd:descriptiveKeywords>
      <gmd:MD_Keywords>
        <gmd:keyword>
          <gco:CharacterString>EARTH SCIENCE&gt;BIOSPHERE&gt;VEGETATION&gt;VEGETATION INDEX&gt;NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)&gt;NONE&gt;0.9 DENSITY</CharacterString>
        </gmd:keyword>
        <gmd:keyword>
          <gco:CharacterString>EARTH SCIENCE&gt;BIOSPHERE&gt;VEGETATION&gt;EVERGREEN VEGETATION</CharacterString>
        </gmd:keyword>
        <gmd:type>
          <gmd:MD_KeywordTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
        </gmd:type>
      </gmd:MD_Keywords> 
    </gmd:descriptiveKeywords>
  </gmd:MD_DataIdentification>
</gmd:identificationInfo>
...

Column

width	50%

UMM

No Format

ScienceKeywords: [
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "VEGETATION INDEX"
    VariableLevel2: "NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)"
    DetailedVariable: "0.9 DENSITY"
  },
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "EVERGREEN VEGETATION"
  }
],

UMM Migration

None

Future Mappings

Expand

title	ISO 19115-1

ISO 19115-1

Science Keywords are required. An unlimited amount of Science Keywords may be provided (Cardinality: 1..*)

Specification

Path

Type

Notes

ISO 19115-1

/mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:descriptiveKeywords/

mri:MD_Keywords/mri:keyword/gco:CharacterString

(list each value of the keyword hierarchy delimited by > )

String

KMS controlled. This is where the entire keyword hierarchy should be listed. Each keyword in the hierarchy must be separated by ">". If any keyword is missing and there exists a keyword later in the hierarchy (such as DetailedLocation), use NONE to fill in the values in between. The CMR will not translate the NONE values they are only used to place each keyword in its correct space in the hierarchy.

ISO 19115-1

/mdb:MD_Metadata/mdb:identificationInfo/mri:MD_DataIdentification/mri:descriptiveKeywords/

mri:MD_Keywords/mri:keyword/mri:type/mri:MD_KeywordTypeCode[@codeListValue="theme"]

Codelist

codeList=http://standards.iso.org/iso/19115/resources/Codelist/cat/codelists.xml#MD_KeywordTypeCode

Select the value "theme" from the codelist. This codelist value does not directly map to a UMM element; choosing "theme" indicates to CMR that the Science Keywords should be mapped.

Section

Column

width	50%

ISO 19115-1

No Format

...    
    <mdb:identificationInfo>
        <mri:MD_DataIdentification>

            <mri:descriptiveKeywords>
                <mri:MD_Keywords>
                    <mri:keyword>
                        <gco:CharacterString>EARTH SCIENCE&gt;BIOSPHERE&gt;VEGETATION&gt;VEGETATION INDEX&gt;NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)&gt;NONE&gt;0.9 DENSITY</gco:CharacterString>
                    </mri:keyword>
                    <mri:keyword>
                        <gco:CharacterString>EARTH SCIENCE&gt;BIOSPHERE&gt;VEGETATION&gt;EVERGREEN VEGETATION</gco:CharacterString>
                    </mri:keyword>
                    <mri:type>
                        <mri:MD_KeywordTypeCode
                            codeList="http://standards.iso.org/iso/19115/resources/Codelist/cat/codelists.xml#MD_KeywordTypeCode"
                            codeListValue="MD_KeywordTypeCode_theme">theme</mri:MD_KeywordTypeCode>
                    </mri:type>
                </mri:MD_Keywords>
            </mri:descriptiveKeywords>
         </mri:MD_DataIdentification>
    </mdb:identificationInfo>       
...

Column

width	50%

UMM

No Format

ScienceKeywords: [
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "VEGETATION INDEX"
    VariableLevel2: "NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)"
    DetailedVariable: "0.9 DENSITY"
  },
  {
    Category: "EARTH SCIENCE",
    Topic: "BIOSPHERE",
    Term: "VEGETATION",
    VariableLevel1: "EVERGREEN VEGETATION"
  }
],

History

UMM Versioning

Version	Date	What Changed
1.10.0	5/2/2018	No changes were made to Science Keywords in the transition from UMM Version 1.9.0 to 1.10.0
1.9.0

ARC Documentation

Version	Date	What Changed	Author
1.0	5/4/18	Recommendations/priority matrix transferred from internal ARC documentation to wiki space	Jeanne' le Roux

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Versions Compared

Old Version 8

New Version 9

Key

Element Description

Best Practices

Element Specification

Metadata Validation and QA/QC

DIF 10

ECHO 10

ISO 19115-2 MENDS

ISO 19115-2 SMAP

UMM Migration

ISO 19115-1

History

UMM Versioning

ARC Documentation