Preservation Use Case Obtsaining Data

From Earth Science Information Partners (ESIP)

Obtaining Data[edit | edit source]

This use case involves all of the ways users obtain data. The range of mechanisms considered range from ad-hoc methods such as consulting your colleagues at a meeting, finding out about a data set and contacting the scientist who has it to get it, to using one of the major data centers systems (or GCMD/ECHO) to find and assess and obtain relevant data sets.

Actors[edit | edit source]

  • the researcher who need data
  • data producers/scientists
  • data curators who may be
    • graduate student who takes care of the data during a project
    • data repository personnel
    • IT folks assigned to manage the storage
    • software systems and analysis tools
    • hardware systems like FTP sites
  • QA people and systems
  • Google and other search engines
  • reputable scientists or colleagues
  • Data recommenders
  • Citation indices for data
  • advertisements such as data casts, etc.
  • Discovery tools

Sequence of Events[edit | edit source]

The general consensus was that no matter the route to actually obtaining the data, the steps involved are always the same:

  • data must be made available
  • data must be advertised
  • data must be accessible
  • must be a feedback mechanism

PCCS artifacts[edit | edit source]

Note: Artifacts with an * are only needed if some issue with the data is observed

  • the data itself
  • processing version
  • source code *
  • Format
  • Size of data
  • parameter descriptions
  • content descriptions
  • tools and web apps needed to read/use/transform the data
  • reputation of source
  • validation status
  • calibration method
  • processing method
  • algorithms used *
  • difference from previous versions *
  • data version
  • processing history *
  • history of what has happened to the data since it was created *
  • data inputs used *
  • pre-cursor products used *
  • instrument schematics, etc. *
  • instrument capabilities and characteristics
  • calibration/validation data *
  • validation method *