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