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This report updates the metadata evaluation that we did during 2016 and provides an opportunity to identify how the CMR metadata have evolved over the year. The total number of records increased by over 50% during this time. We introduced a new visualization to summarize this comparison. This Table summarizes the results and provides links to Tables that show the elements that changed:
The largest change identified is forty-eight elements that were introduced to the metadata during 2017. The deletion of twenty-one elements that existed in some collections in 2016 and in none during 2017 was primarily due to an improvement in the translation from the CMR into ISO.
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Table 1. Metadata Groups in the Common Metadata Repository (CMR)
Group Title | # Records | Group History | Major components - # Records |
NASA | 6367 | Traditional DAAC Metadata – ECHO Dialect | GES-DISC – 1044 ORNL – 1216 18 DAAC Collections |
IDN | 8702 | Non-NASA Collections – Managed by SciOps – Typically, DIF dialect | NOAA_NCEI – 5488 AU_AADC – 2559 8 Miscellaneous Collections |
SciOps (formerly GCMD) | 5465 | Miscellaneous, mostly non-NASA – DIF Dialect | NZ – 857 UCAR – 437 ACADIS – 393 Korea Polar - 329 |
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- Commonly Used Documentation Objects (CUDOs)
- Comparing element usage in NASA 2016 vs NASA 2017 metadata collections in the CMR
- Comparing element usage in NASA vs Other IDN metadata collections in the CMR
- Comparing element usage in NASA vs SciOps metadata collections in the CMR
- UMM-Collection Metadata Completeness in the CMR
- UMM-Collection Metadata Usage
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