Data Management Considerations for IGOS

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Data Management Considerations for IGOS
Mark Parson, NSIDC
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Some Basics to Consider

• Look at whats been done before.
• Of note NRC 95. Finding the Forest for the Trees
• Fundamentally it is a question of data
  preservation and accesstwo sides of the same
  coin
• Data management is about peopleinvolve
  professionals early
• People need to understand best practicesOAIS is
  great and should be adopted

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More Basics to Consider

• Know your users--and recognize they will change
  in unanticipated ways
• Document well - especially data uncertainty
• Scientists and data managers need to work
  together on documentation
• Documentation always takes more time and effort
  than you think it will
• Data management costs money--there is no good
  business model but NRC 95 estimates 10 of total
  project cost.

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Facilitating Integration - Issues for Observing
systems

• Define and enforce data standards and methods,
  e.g
• Data and metadata formats
• Spatial and temporal scales and grids
• Data collection methods
• Data transfer methods and interfaces
• Data quality and accountability procedures
• Put someone in charge of keeping track of all
  this herding the cats
• More and better data integration and information
  mining tools will be available but they require
  good data.

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The equatorial biasa problem in the cryosphere
Many view the world as a flat earth
A manner of representing the distances which
gives the worst results of all.
- Claudius Ptolemy (c. 100 AD)
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The equatorial biasa problem in the cryosphere
We see a round (spherical) Earth
This informs grids, projections,search tools,
subsetting methods, etc. If you consider the
poles it is easy to handle the equator, but not
the other way around.
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An example85 false positives