NASANSSDC Report to MOIMS DAI

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NASA/NSSDC Report to MOIMS DAI

• May 12, 2004

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Report Topics

• US OAIS Usage
• NSSDC basic charter
• Proposed new NSSDC role in Sun-Earth Connection
  discipline

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US OAIS Related Implementations

• NASA/NSSDC concepts used for new ingest
  projects and for data migration efforts
• NASA/Langley DAAC developing OAIS implementation
  for greatly increased automation
• NASA Life Sciences Data Archive (LSDA) is using
  the OAIS
• as a reference whenever documentation and
  procedures are updated
• as the model for the data mining and preservation
  efforts for the astronaut data.
• NASA is using the OAIS as a reference in the
  design of the new Artificial Gravity Program

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US OAIS Related Implementations-2

• National Snow and Ice Data Center has adopted
  OAIS and is expanding usage of the terminology
  internally and externally
• U.S. National Oceanographic Data Center using it
  to describe their system and identify what is
  missing
• NARA Electronic Records Archives (ERA)using
  OAIS as framework for major procurement
• National Digital Information Infrastructure
  Planning Program (NDIIPP) cites OAIS as a given
• MIT/Hewlett Package jointly developed Dspace
  digital library system is being informed by OAIS
  as to what is missing

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Basic NSSDC Charter

• NSSDC is the NASA Office of Space Science
  Permanent Archive
• Astrophysics
• Planetary and Lunar
• Sun-Earth Connection (including Solar)
• NSSDC acquires data from active archives
• And from projects when mediated by an active
  archive

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Current Active Archives

• Astrophysics
• HEASARC at GSFC
• MAST at Space Telescope, Baltimore
• IPAC at Cal Tech
• LAMBDA at GSFC
• Michelson Science Center Archives at Cal Tech
• Planetary and Lunar
• PDS Central Node at JPL
• Sun-Earth Connection
• SECAA co-resident with NSSDC
• Solar DAC (also at GSFC)

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New View for Sun-Earth Connection
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Current model for data life cycle
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Proposed paradigm forlife cycle of mission data
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Features

• Resident Archive
• Retain under the supervision of the project team
• SMM at SDAC
• E.g. Yohkoh at MSSU (Acton)
• SAMPEX may go to CIT (Stone)
• Genesis solar wind data at LANL
• Serve the community as well as the managers of
  the resident archives
• Delays the final delivery to a permanent
  archive
• Peer Review
• Determine the end of the resident archive tenure
• Assess performance of the resident archives
• Recommend corrections/improvements
• Mission Data Archive Arrangement
• Between the mission and the NSSDC
• Arranged as part of a missions proposal to a
  senior review
• Managed by the NSSDC
• The NSSDC is the permanent archive authority, but
  
• Accept the principle of antiquing of science
  data

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The antiquing of science data

• The value of a missions data declines over time
• Each data set has its own value-time profile
  half life
• Attributes of value include retrievals / cites
  in publications / perception
• Resources applied to preserving / maintaining
  antique data, documentation, associated tools
  needs to be proportional to the assessed value
• A certain burden is implied on behalf of
  researchers working w/ antique data
• The less valuable data may take more of the
  researchers resources to exploit
• This is a dynamic that must be factored into the
  management of the long term archives

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Managed by the NSSDC

• The permanent data authority needs to transform
  from
• A collector of assorted mission data
• To the manager of distributed data holdings
• What does this mean?
• The NSSDC enters into contractual arrangements
  with each of the resident and permanent archives
• These archives do not have to be in B26 at GSFC
• They can be assigned by agreement or competitive
  process
• NSSDC can solicit for the re-assignment of these
  archives
• The NSSDC becomes the auditor of the active,
  resident, and permanent archives
• Key attributes to monitor
• Where are the data gt maintain the inventory
• performance against tbd standards
• Redundancy, security
• Maintenance, etc.
• Accessibility, etc.
• tbd