Element Description
The Day Night Flag element is used to identify whether a granule was collected during the day, night (between sunset and sunrise), or both.
Best Practices
Day Night Flag is a required element under Data Granule. This is a controlled vocabulary field with 4 options:
- Day
- Night
- Both
- Unspecified
If no Day Night Flag information is available for the granule, the "Unspecified" value should be used.
Element Specification
The Day Night Flag element is required in UMM-G (Cardinality: 1)
Model | Element | Type | Constraints | Required? | Cardinality |
---|---|---|---|---|---|
UMM-G | DataGranule/DayNightFlag | Enumeration | Day Night Both Unspecified | Yes | 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
N/A
History
UMM Versioning
Version | Date | What Changed |
---|---|---|
1.6.0 | 11/4/2019 | No changes were made for Day Night Flag during the transition from version 1.5.0 to 1.6.0. |
1.5.0 | 01/30/2019 | No changes were made for Day Night Flag during the transition from version 1.4.0 to 1.5.0. |
1.4.0 | 08/01/2018 | No changes were made for Day Night Flag during the transition from version 1.3.0 to 1.4.0. |
ARC Documentation
Version | Date | What Changed | Author |
---|---|---|---|
1.0 | 03/26/2019 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space |