The Day Night Flag element is used to identify whether a granule was collected during the day, night (between sunset and sunrise), or both.
Day Night Flag is a required element under Data Granule. This is a controlled vocabulary field with 4 options:
If no Day Night Flag information is available for the granule, the "Unspecified" value should be used.
The Day Night Flag element is required in UMM-G (Cardinality: 1)
Model | Element | Type | Constraints | Required? | Cardinality |
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UMM-G | DataGranule/DayNightFlag | Enumeration | Day Night Both Unspecified | Yes | 1 |
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 Automated Checks ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information. |
ECHO 10Day Night Flag is required in ECHO 10 (Cardinality: 1)
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ISO 19115-2 MENDSThe 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).
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ISO 19115-2 SMAPThere is currently no mapping between UMM-G and ISO 19115-2 SMAP for Day Night Flag.
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N/A
Future Mappings
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Version | Date | What Changed |
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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. |
Version | Date | What Changed | Author |
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1.0 | 03/26/2019 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space |