Element Description
The Ancillary Keywords element allows metadata authors to provide words or phrases beyond the controlled Science Keyword vocabulary, to further describe the the collection.
Best Practices
The Ancillary Keywords element is optional, and is an uncontrolled free-text field. It can be leveraged to provide any additional keywords needed to describe the collection in addition to the Science Keywords (which must be selected from a controlled vocabulary list). This can be useful for providing tags needed for other applications or for providing niche keywords which may not fit in the current scope of the controlled science keyword vocabulary. Ancillary keywords are indexed for search using the CMR API, however, they do not appear as faceted keywords in the Earthdata Search Client user interface.
Examples:
"Hurricane Katrina"
"Mineral Resources"
"BEDI"
"Modified SAVI"
"Discrete-Band Normalized Difference Water Index"
"Principal Component Analysis"
"Hydrology"
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 | AncillaryKeywords | String | 1 - 255 characters | No | 0..* |
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 |