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Element Description
The Purpose element contains suggested usage for the data and/or a description for why the resource exists. Any limitations on the resource (including, but not limited to, special restrictions, legal prerequisites, and terms and conditions) should be placed into the Use Constraints element and not into the Purpose element.
Best Practices
The Purpose element is optional. It can be leveraged to communicate to a user the broad applications the data is designed to be used for, and/or why the data were generated.
Examples:
"To assess species composition, abundance, distribution and biomass of zooplankton within the Bering and Chukchi Seas , 1985-1989."
"To provide VIIRS 375m resolution active fire locations in Near Real-Time in easy to use formats."
"To serve a wide user community by providing composite Landsat images and raw data for urban areas that can be used in interdisciplinary studies of remote sensing and the environment."
Element Specification
Model | Element | Type | Constraints | Required? | Cardinality |
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UMM-C | Purpose | String | 1 - 10000 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).
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ARC Automated Rules If novalue is provided, return is "np"Checks ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information. Otherwise, return is "OK" |
Dialect Mappings
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DIF 9 (Note: DIF-9 is being phased out and will no longer be supported after 2018) |
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DIF 10Purpose is an optional element. Purpose can only be provided once (Cardinality: 0..1)
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ECHO 10Suggested Usage is an optional element. Suggested Usage can only be provided once (Cardinality: 0..1)
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ISO 19115-2 MENDSPurpose is an optional element. Purpose can only be provided once in CMR (Cardinality: 0..1)
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ISO 19115-2 SMAPPurpose is an optional element. Purpose can only be provided once in CMR (Cardinality: 0..1)
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UMM Migration
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Future Mappings
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History
UMM Versioning
Version | Date | What Changed |
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1.15.5 | 12/3/2020 | No changes were made for Purpose during the transition from version 1.15.4 to 1.15.5 |
1.15.4 | 9/18/2020 | No changes were made for Purpose during the transition from version 1.15.3 to 1.15.4 |
1.15.3 | 7/1/2020 | No changes were made for Purpose during the transition from version 1.15.2 to 1.15.3 |
1.15.2 | 5/20/2020 | No changes were made for Purpose during the transition from version 1.15.1 to 1.15.2 |
1.15.1 | 3/25/2020 | No changes were made for Purpose during the transition from version 1.15.0 to 1.15.1 |
1.15.0 | 2/26/2020 | No changes were made for Purpose during the transition from version 1.14.0 to 1.15.0 |
1.14.0 | 10/21/2019 | No changes were made for Purpose during the transition from version 1.13.0 to 1.14.0 |
1.13.0 | 04/11/2019 | No changes were made for Purpose during the transition from version 1.12.0 to 1.13.0 |
1.12.0 | 01/22/2019 | No changes were made for Purpose during the transition from version 1.11.0 to 1.12.0. |
1.11.0 | 11/28/2018 | No changes were made for Purpose during the transition from version 1.10.0 to 1.11.0. |
1.10.0 | 05/02/2018 | No changes were made for Purpose during the transition from version 1.9.0 to 1.10.0. |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 10/05/2018 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space | Jeanne' le Roux |