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..*)
Model | Element | Type | Constraints | Required? | Cardinality |
---|---|---|---|---|---|
UMM-C | Quality | String | 1 - 12000 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).
Please see the expandable sections below for flowchart details.
Dialect Mappings
UMM Migration
UMM Version 1.9.0 | Translation Direction | UMM Version 1.10.0 |
---|---|---|
Future Mappings
History
UMM Versioning
Version | Date | What Changed |
---|---|---|
1.10.0 | 5/2/2018 | No changes were made for Ancillary Keywords during the transition from version 1.9.0 to 1.10.0 |
1.9.0 |
ARC Documentation
Version | Date | What Changed | Author |
---|---|---|---|
1.0 | 10/12/18 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space | Jeanne' le Roux |