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Element Description

The Cloud Cover element provides a measurement, in percentage, of how much of the area of a granule (the EOSDIS data unit) is obscured by clouds. Because the definition of a cloud can vary from one data provider to another, this measurement is generally dataset-specific. 

Best Practices

The Cloud Cover element is not a required element. As a result, it is rarely provided. However, in the event that it is provided, please be aware this element varies based on the data provider. 

Examples:

Cloud Cover: "50.0"

Cloud Cover: "0.00"

Cloud Cover: "30.0"

Element Specification

The Cloud Cover element is not required. (Cardinality: 0..1)

ModelElementTypeConstraintsRequired?Cardinality
UMM-GCloudCoverNumber

0 - 100

N0..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. 


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ARC Priority Matrix

Priority CategorizationJustification

This element is categorized as highest priority when:

  • The Cloud Cover is incorrect for the granule.

Not Applicable


Not Applicable


The element is provided and follows all applicable criteria specified in the best practices section above.

ARC Automated Rules

Dialect Mappings

ECHO 10

Cloud Cover is not a required element for ECHO 10.

UMM-G ElementECHO 10 PathTypeConstraintsRequired in ECHO10?Cardinality
CloudCoverCloudCoverDecimal

0 - 100

N0..1


Example Mapping

ECHO 10

<CloudCover>50.0</CloudCover>

UMM

{
  "GranuleUR": "50.0",
}

ISO 19115-2 MENDS

The Cloud Cover element is optional in ISO 19115-2 format (Cardinality: 0..1).

UMM-G ElementISO PathTypeNotes
CloudCover

/gmi:MI_Metadata/gmd:contentInfo/gmd:MD_ImageDescription/gmd:attributeDescription/gco:RecordType = CloudCover
/gmi:MI_Metadata/gmd:contentInfo/gmd:MD_ImageDescription/gmd:contentType/gmd:MD_CoverageContentTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_CoverageContentTypeCode" codeListValue="physicalMeasurement" = physicalMeasurement
/gmi:MI_Metadata/gmd:contentInfo/gmd:MD_ImageDescription/gmd:cloudCoverPercentage/gco:Real = {the actual value}

Decimal

This element maps to the UMM-G Element Cloud Cover.


Example Mapping

ISO 19115-2 MENDS

<gmi:MI_Metadata>
  <gmd:contentinfo>
    <gmd:MD_ImageDescription>
      <gmd:attributeDescription>
        <gco:RecordType>
                <gco:CharacterString>50.0</gco:CharacterString>
        </gco:RecordType>
      </gmd:attributeDescription>
    </gmd:MD_ImageDescription>
  </gmd:contentinfo>
</gmi:MI_Metadata>

UMM

{
  "GranuleUR": "50.0",
}

ISO 19115-2 SMAP

The Cloud Cover element currently does not map to ISO 19115-2 SMAP.

UMM-G ElementISO PathTypeNotes
Cloud Cover

N/A

N/A

N/A


Example Mapping

ISO 19115-2 SMAP

N/A

UMM

{
  "GranuleUR": "50.0",
}


UMM Migration

UMM Version 1.4.0Translation DirectionUMM Version 1.5.0



Future Mappings

ISO 19115-1

The Cloud Cover element currently does not map to ISO 19115-1.

SpecificationPathTypeNotes
ISO 19115-1

N/A

N/A

N/A


Example Mapping

ISO 19115-1

N/A

UMM

{
  "GranuleUR": "50.0",
}

History

UMM Versioning

VersionDateWhat Changed
1.5.001/30/2019No changes were made for Cloud Cover during the transition from version 1.4.0 to 1.5.0.
1.4.008/01/2018No changes were made for Cloud Cover during the transition from version 1.3.0 to 1.4.0.

ARC Documentation

VersionDateWhat ChangedAuthor
1.002/15/2019Recommendations/priority matrix transferred from internal ARC documentation to wiki space

Camille Woods

Jeanne' le Roux

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