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LTER Science 2050: Challenges, Constraints and Opportunities
Bill Michener
Professor and DataONE Project DirectorUniversity of New Mexico
12 September 2012
LTER ASMYMCA of the Rockies
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• Discovery• Discovery level metadata• Semantic search
• Accessibility• Bit level preservation• Availability—dark vs. light archives• IPR issues, attribution and licensing
• Usability• Interpretability• Data/metadata completeness
• Sufficiency• Data/metadata quality, provenance and relevance
• Semantic mediation tools
Challenges
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Constraints
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• Technical constraints: relatively minor and will be resolved• Sociocultural challenges: large (IPR/licensing, community norms, $)
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Three major components for a flexible, scalable, sustainable network
Member Nodes•diverse institutions•serve local community•provide resources for managing their data•retain copies of data
Coordinating Nodes•retain complete metadata catalog •indexing for search•network-wide services•ensure content availability (preservation) •replication services
Investigator Toolkit
Opportunities—e.g., DataONE
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Kepler
DMP-Tool
Investigator Toolkit Support
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Data Management Planning Tool
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Check for best practices Create metadata Connect to ONEShare
Data & Metadata (EML)
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1. Ontology-based discovery search results
Concepts acquire context: biomass
as Material or biomass as Energy
Concepts acquire context: biomass
as Material or biomass as Energy Additional
search termsAdditional
search terms
Super-classes may have different
properties
Super-classes may have different
properties
1.NCBO ontology repository instance2.Populated with ontologies (e.g., the NASA-JPL Semantic
Web for Earth and Environmental Terminology)3.Queried ontologies and returned results using REST services
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Actual Keywords Suggested Keywords
1. canopy characteristics2. field investigation3. vegetation index4. leaf characteristics5. Satellite6. land cover7. leaf area meter8. Reflectance9. steel measuring tape10. vegetative cover11. plant characteristics12. albedo
[1]field investigation[2]analysis[3]land cover[4]computational model[5]reflectance[6]vegetative cover[7]biomass[8]primary production[9]steel measuring tape[10]weigh balance[11]precipitation amount[12]canopy characteristics[13]leaf characteristics[14]water vapor[15]quadrat sample frame[16]rain gauge[17]surface air temperature[18]air temperature[19]meteorological station[20]human observer[21]vegetation index[22]soil core device[23]plant characteristics[24]surface wind[25]albedo
DAAC DRYAD KNB
Number of Documents 978 1,729 24,249
Total Number of Keywords 7,294 8,266 254,525
Average Keywords/Document 7.46 4.78 10.49
Approach 2: Enrich MN Metadata
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DataONE.org