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Element Description
Note: This page is a draft
This The Measured Parameters element provides the geophysical parameters that were obtained during data collection. It contains not only the name of the parameters , but it also includes the with the option to provide associated data quality stats statistics and data quality flags. The data quality stats statistics provide information on the measurement of the quality of the data while the data quality flags represent the overall quality assurance levels placed on the granule's parameters.
Best Practices
Measured Parameters is an optional element; however, at bare minimum, the parameter names must be provided if a data provider chooses to provide this element. If provided, then the parameter name(s) must be given.
- Parameter Name: The name of the measured geophysical parameters represented in the data.
- QA Stats: Provides a measured of the The QA Stats sub-elements provide a measure of select data quality statistics associated with the data measured parameter. Each of these statistics must be expressed as a percentage value between 0 and 100. QA Stats sub-elements include:
- QA Percent
- Percent Missing Data: Provides the The percent of the data that is missing at the granule level.
- QA Percent Out of Bounds Data: Provides the The percent of the granule data that was is out of bounds.
- QA Percent Interpolated Data: Provides the The percent of the granule data that was interpolated
- .
- QA
- Automatic Quality Flag:
- Automatic Quality Flag Explanation:
- Operational Quality Flag:
- Operational Quality Flag Explanation:
- Science Quality Flag:
- Science Quality Flag Explanation:
Examples:
Parameter Name: "BIOMASS", "FORESTS", "CROWN", "PLANT CHARACTERISTICS", "VEGETATION SPECIES"
Element Specification
The Measured Parameters element is optional. (Cardinality: 0..*) If measured parameters are provided, the parameter name(s) are required.
PASSED
FAILED
SUSPECT
UNDETERMINED
PASSED
FAILED
BEING INVESTIGATED
NOT INVESTIGATED
INFERRED PASSED
INFERRED FAILED
SUSPECT
UNDETERMINED
PASSED
FAILED
BEING INVESTIGATED
NOT INVESTIGATED
INFERRED PASSED
INFERRED FAILED
SUSPECT
HOLD
UNDETERMINED
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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This element is categorized as highest priority when:
- The Measured Parameters are not provided when applicable.
- The Measured Parameters are incorrect for the granule.
Not Applicable
Not Applicable
ARC Automated Rules
Dialect Mappings
- Percent Cloud Cover: The percent of the granule data covered by clouds; keep in mind that the definition of a cloud can vary from one data provider to another.
- QA Flags: The QA Flags sub-elements provide science, operational and automatic quality flags associated with the measured parameter. The criteria for passing each QA flag is specified by the data provider. The actual value of the QA flag must be selected from an enumerated list of values, whereas the criteria or explanation of the QA flag can be provided as free text with a maximum text length of 2,048 characters. QA Flag sub-elements include:
- Automatic Quality Flag: Indicates an automated measure of quality of the specified measured parameter based on guidelines set by the data provider.
- Valid values for Automatic Quality Flag include: "Passed", "Failed", "Suspect", "Undetermined"
- Automatic Quality Flag Explanation: This sub-element details the criteria utilized for determining the automatic quality flag, including thresholds.
- Operational Quality Flag: Indicates an operational measure of quality of the specified measured parameter based on guidelines set by the data provider.
Valid values for Operational Quality Flag include: "Passed", "Failed", "Being Investigated", "Not Investigated", "Inferred Passed", "Inferred Failed", "Suspect", "Undetermined"
- Operational Quality Flag Explanation: This sub-element details the criteria utilized for determining the operational quality flag, including thresholds.
- Science Quality Flag: Indicates a measure of science quality of the specified measured parameter based on guidelines set by the data provider.
- Valid values for Science Quality Flag include: "Passed", "Failed", "Being Investigated", "Not Investigated", "Inferred Passed", "Inferred Failed", "Suspect", "Hold", "Undetermined"
- Science Quality Flag Explanation: Details the criteria utilized for determining the science quality flag.
- Automatic Quality Flag: Indicates an automated measure of quality of the specified measured parameter based on guidelines set by the data provider.
Providing all of the aforementioned sub-elements is completely optional; however, if a data provider chooses to provide any QA Stats or QA flags information, at least one sub-element from its respective category must be provided.
Examples:
Example 1: Only Measured Parameter Names are provided | Example 2: One Measured Parameter is provided along with select QA Stats and QA Flags for the parameter |
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Parameter Name: VEGETATION SPECIES Parameter Name: BIOMASS Parameter Name: DIAMETER AT BREAST HEIGHT Parameter Name: FOREST TYPE | Parameter Name: PRECIPITATION AMOUNT QA Stats: QA Percent Missing Data: 5 QA Percent Interpolated Data: 55 QA Percent Cloud Cover: 0 QA Flags: Automatic Quality Flag: Passed Automatic Quality Flag Explanation: Indicates whether data were successfully processed. Absence of error messages during data processing is considered passed. Presence of error messages during data processing will label the data suspect. Science Quality Flag: Inferred Passed Science Quality Flag Explanation: The data in this granule has passed preliminary quality tests. Please refer to the user's guide for further details regarding data accuracy, validation, and limitations for use. |
Element Specification
The Measured Parameters element is optional, and may be repeated (Cardinality: 0..*). If provided, the Parameter Name is required.
Model | Element | Type | Constraints | Required? | Cardinality | Notes |
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UMM-G | MeasuredParameter/ParameterName | String | 1 - 250 characters | Yes, if applicable | 1 | Only required if measured parameters are provided. |
UMM-G | MeasuredParameter/QAStats/QAPercentMissingData | Number | 0 - 100 | No | 0..1 | |
UMM-G | MeasuredParameter/QAStats/QAPercentOutOfBoundsData | Number | 0 - 100 | No | 0..1 | |
UMM-G | MeasuredParameter/QAStats/QAPercentInterpolatedData | Number | 0 - 100 | No | 0..1 | |
UMM-G | MeasuredParameter/QAStats/QAPercentCloudCover | Number | 0 - 100 | No | 0..1 | |
UMM-G | MeasuredParameter/QAFlags/AutomaticQualityFlag | Enumeration | Passed Failed Suspect Undetermined | No | 0..1 | |
UMM-G | MeasuredParameter/QAFlags/AutomaticQualityFlagExplanation | String | 1 - 2048 characters | No | 0..1 | |
UMM-G | MeasuredParameter/QAFags/OperationalQualityFlag | Enumeration | Passed Failed Being Investigated Not Investigated Inferred Passed Inferred Failed Suspect Undetermined | No | 0..1 | |
UMM-G | MeasuredParameter/QAFlags/OperationalQualityFlagExplanation | String | 1 - 2048 characters | No | 0..1 | |
UMM-G | MeasuredParameter/QAFlags/ScienceQualityFlag | Enumeration | Passed Failed Being Investigated Not Investigated Inferred Passed Inferred Failed Suspect Hold Undetermined | No | 0..1 | |
UMM-G | MeasuredParameter/QAFlags/ScienceQualityFlagExplanation | String | 1 - 2048 characters | 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 rich-viewer false autofit true name Copy of Wiki Page Metadata Evaluation Workflow-1939-51df84 width 1102 pages-to-display id 98e5dc28-3252-4209-953f-66f1378e1cf4 align Left height 299
Please see the expandable sections below for flowchart details.
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ARC Automated Checks ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information. |
Dialect Mappings
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ECHO 10The Measured Parameters element is optional, and may be repeated (Cardinality: 0..*). If provided, the Parameter Name is required.
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ISO 19115-2 MENDSThe Measured Parameters element is optional, and may be repeated (Cardinality: 0..*). If provided, the Parameter Name is required by the CMR.
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UMM-G Element | ECHO 10 Path | Type | Constraints | Required in ECHO10? | Cardinality | Notes | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Measured Parameter/Parameter Name | ParameterName | String | 1 - 250 characters | Yes, if applicable | 1 | Only required if measured parameters are provided. | Measured Parameter/QA Stats/QAPercent Missing Data | QAPercentMissingData | Decimal | N/A | No | 0..1 | Measured Parameter/QA Stats/QA Percent Out of Bounds Data | QAPercentOutofBounds | Decimal | N/A | No | 0..1 | Measured Parameter/QA Stats/QAPercent Interpolated Data | QAPercentInterpolatedData | Decimal | N/A | No | 0..1 | Measured Parameter/QA Stats/QA Percent Cloud Cover | QAPercentCloudCover | Decimal | N/A | No | 0..1 | Measured Parameter/QA Flags/Automatic Quality Flag | AutomaticQualityFlag | String | 1 - 80 characters | No | 0..1 | Measured Parameter/QA Fags/Operational Quality Flag | OperationalQualityFlag | String | 1 - 80 characters | No | 0..1 | Measured Parameter/QA Flags/Operational Quality Flag Explanation | OperationalQualityFlagExplanation | String | 1 - 2048 characters | No | 0..1 | Measured Parameter/QA Flags/Science Quality Flag | ScienceQualityFlag | String | 1 - 80 characters | No | 0..1 | Measured Parameter/QA Flags/Science Quality Flag Explanation | ScienceQualityFlagExplanation | String | 1 - 2048 characters | No | 0..1 | Example Mapping
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title | ISO 19115-2 MENDS |
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ISO 19115-2 MENDS
The path where Granule UR is provided in ISO is optional, however, a Granule UR is required for all granule metadata submitted to the CMR (Cardinality: 0..1).
[=>/gmd:dimension/gmd:MD_Band [==>
[==>/gmd:sequenceIdentifier/gco:MemberName/gco:aName/gco:CharacterString {the value}
[==>/gmd:sequenceIdentifier/gco:MemberName/gco:attributeType/gco:TypeName/gco:aName/gco:CharacterString = MeasuredParameters
(CMR write only)
/gmi:MI_Metadata/gmd:DQ_DataQuality/gmd:scope/gmd:DQ_Scope/gmd:levelDescription/gmd:MD_ScopeDescription/gmd:attributes/gco:CharacterString = ParameterName
String
Maps to the UMM element Measured Parameters
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title | ISO 19115-2 SMAP |
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ISO 19115-2 SMAP
Measured Parameters currently does not map to ISO 19115-2 SMAP.
N/A
N/A
N/A
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UMM Migration
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Future Mappings
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ISO 19115-12 SMAPMeasured Parameters currently does not map to ISO 1991519115-12 SMAP.
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UMM Migration
UMM Version 1.4.0 | Translation Direction | UMM Version 1.5.0 |
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History
UMM Versioning
Version | Date | What Changed |
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1.6.0 | 11/4/2019 | No changes were made for Measured Parameters during the transition from version 1.5.0 to 1.6.0. |
1.5.0 | 01/30/2019 | No changes were made for Measured Parameters during the transition from version 1.4.0 to 1.5.0. |
1.4.0 | 08/01/2018 | No changes were made for Measured Parameters during the transition from version 1.3.0 to 1.4.0. |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 02/15/2019 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space |