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Element Description


Free text description of the quality of the collection data. Description may include: 1) succinct description of the quality of data in the collection; 2) Any quality assurance procedures followed in producing the data in the collection; 3) indicators of collection quality or quality flags - both validated or invalidated; 4) recognized or potential problems with quality; 5) established quality control mechanisms; and 6) established quantitative quality measurements.

Examples of appropriate element information include: A) succinct description; B) indicators of resource quality or quality flags - both validated, invalidated, or unvalidated; C) recognized or potential problems with quality; D) established quality control mechanisms; and E) established quantitative quality measurements.



Best Practices

This element is found only in GCMD and its value is an uncontrolled block of text describing the quality assessment. Both ISO conventions (19115-1 & 2) have sub-fielded text that more precisely describe the quality assessment of a resource.  Please refer to ISO 19157 (Geographic information – Data quality) for more information about data quality in ISO.

  

Examples:

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details."



Element Specification

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

ModelElementTypeConstraintsRequired?Cardinality
UMM-CQualityString

1 - 12000 characters

No0..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).

Please see the expandable sections below for flowchart details.


  • Manual Review
    • Check that the purpose description is appropriate for the data set
  • Automated Review
    • Check that the field has been populated
    • Check that the field length is not greater than 1000 characters

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ARC Priority Matrix

Priority CategorizationJustification

This element is categorized as highest priority when:

  • The ancillary keyword contains a spelling error
  • The element is being used incorrectly

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 data set

N/A


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 "np"
  • Otherwise, return is "OK"

Dialect Mappings

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

DIF 10

SpecificationPathTypeConstraintsRequired in DIF 10?Cardinality
DIF 10Quality

String


No

0..1


Example Mapping

DIF 10

<Quality>Nucleic extraction blanks were carried out through amplification steps and sequence analysis quality control measures were followed on data analyzed. Oceanographic instruments were calibrated at SeaBird before the cruise and sample blanks were periodically run for chlorophyll and nutrient analyses.</Quality>

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.",

ECHO 10

Quality does not map to ECHO 10.

SpecificationPathTypeConstraintsRequired in ECHO10?CardinalityNotes
ECHO 10N/AN/A

N/A

N/AN/A

Quality does not map to ECHO10.


Example Mapping

ECHO 10

N/A



UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.",

ISO 19115-2 MENDS

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

SpecificationPathTypeNotes
ISO 19115-2 MENDS/gmi:MI_Metadata/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report/gmd:DQ_QuantitativeAttributeAccuracy/gmd:evaluationMethodDescription/gco:CharacterString

String

Maps to the UMM element Quality


Example Mapping

ISO 19115-2 MENDS

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

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.",

ISO 19115-2 SMAP

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

SpecificationPathTypeNotes
ISO 19115-2 SMAP

/gmd:DS_Series/gmd:seriesMetadata/gmi:MI_Metadata/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report/gmd:DQ_QuantitativeAttributeAccuracy/gmd:evaluationMethodDescription/gco:CharacterString

String

Maps to the UMM element Quality


Example Mapping

ISO 19115-2 SMAP

<gmd:dataQualityInfo>
      <gmd:DQ_DataQuality>
         <gmd:scope>
            <gmd:DQ_Scope>
               <gmd:level>
                  <gmd:MD_ScopeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode"
                                    codeListValue="series">series</gmd:MD_ScopeCode>
               </gmd:level>
            </gmd:DQ_Scope>
         </gmd:scope>
         <gmd:report>
            <gmd:DQ_AccuracyOfATimeMeasurement>
               <gmd:measureIdentification>
                  <gmd:MD_Identifier>
                     <gmd:code>
                        <gco:CharacterString>PrecisionOfSeconds</gco:CharacterString>
                     </gmd:code>
                  </gmd:MD_Identifier>
               </gmd:measureIdentification>
               <gmd:result>
                  <gmd:DQ_QuantitativeResult>
                     <gmd:valueUnit/>
                     <gmd:value>
                        <gco:Record xsi:type="gco:Real_PropertyType">
                           <gco:Real>1</gco:Real>
                        </gco:Record>
                     </gmd:value>
                  </gmd:DQ_QuantitativeResult>
               </gmd:result>
            </gmd:DQ_AccuracyOfATimeMeasurement>
         </gmd:report>
         <gmd:lineage>
            <gmd:LI_Lineage>
               <gmd:processStep>
                  <gmi:LE_ProcessStep>
                     <gmd:description gco:nilReason="unknown"/>
                     <gmd:processor>
                        <gmd:CI_ResponsibleParty>
                           <gmd:organisationName>
                              <gco:CharacterString>SEDAC</gco:CharacterString>
                           </gmd:organisationName>
                           <gmd:role>
                              <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode"
                                               codeListValue="processor">processor</gmd:CI_RoleCode>
                           </gmd:role>
                        </gmd:CI_ResponsibleParty>
                     </gmd:processor>

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.",

UMM Migration

UMM Version 1.9.0Translation DirectionUMM Version 1.10.0



Future Mappings

ISO 19115-1

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

SpecificationPathTypeNotes
ISO 19115-1

/mdb:MD_Metadata/mdb:dataQualityInfo/mdq:DQ_DataQuality/mdq:report/mdq:DQ_DomainConsistency/mdq:result/mdq:DQ_DescriptiveResult/mdq:statement/gco:CharacterString

String

Maps to the UMM element Quality


Example Mapping

ISO 19115-1

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

UMM

Quality: "Users are advised that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document (https://lpdaac.usgs.gov/sites/default/files/public/aster/docs/ASTER_SWIR_User_Advisory_July%2018_08.pdf) for more details.",

History

UMM Versioning

VersionDateWhat Changed
1.10.05/2/2018

No changes were made for Ancillary Keywords during the transition from version 1.9.0 to 1.10.0

1.9.0

ARC Documentation

VersionDateWhat ChangedAuthor
1.010/12/18Recommendations/priority matrix transferred from internal ARC documentation to wiki spaceJeanne' le Roux



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