Clearinghouse

• Steve - lots of functional testing involved of all three clearinghouses, using the Eliot Christian Z39.50 tool. USGS clearinghouse did much better. Not clear why that work went into Yang's group.
  
• Consolidated clearinghouse requirements document - registries, clearinghouses, portals.
• Connection to AIP-3:
• Can GEOSS Common Record (GCR) metadata be harvested?
• Can the clearinghouse be queried for GCR mapped from other harvested metadata?

Common Record

• Addition of Data Quality Status -
  
• Joan - connected to GEO "Label" expression of data quality for GEOSS use.
• Josh - tend to have the problem of needing "quality of metadata" measures, or meta-metadata, which is not yet well standardized
• Stefan - within air community, quality propagation and provenance is a concern. QA4EO may be concerned with this, but focus and current activity seem to be on cross-calibration, not propagation or documentation
• Stefan - contextual metadata issue - who else has used data, what are its limitations or intended use? Connection between quality and suitability. Potential conflict with GEOSS goal of "unintended use".
• Josh - in particular, data product may be correlated with / derived from another product which someone else tests / corroborates with the first product. Can we suggest test of these particular examples of inappropriate usage.
• Data quality flags from EPA --- need to see whether those are general, and also useful. Tend to be for individual values, such as "outside of calibration range"

Actions:

• Josh - check with Doug Nebert / Phil Yang about clearinghouse support for GCR
• Joan - review ISO Core values for completeness
• Steve - link to consolidated requirements
• Nadine - Check with George on workshop outcomes - task coordination
• Stefan - more generalized data quality flags
  

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