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GES DISC Experience with HDF Formats for MeaSUREs Projects

GES DISC Experience with HDF Formats for MeaSUREs Projects. by James Johnson NASA/GES DISC (Wyle Inc.) April 17, 2012. What is MEaSUREs?. Making Earth Science Data Records for Use in Research Environments (MEaSUREs) ROSES-2006 Proposal with 29 projects

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GES DISC Experience with HDF Formats for MeaSUREs Projects

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  1. GES DISC Experience with HDF Formats for MeaSUREs Projects by James Johnson NASA/GES DISC (Wyle Inc.) April 17, 2012

  2. What is MEaSUREs? Making Earth Science Data Records for Use in Research Environments (MEaSUREs) ROSES-2006 Proposal with 29 projects Create Earth Science Data Records (ESDRs): long-term, consistent, and calibrated data and products that are valid across multiple missions and satellite sensors GES DISC supports 7 MEaSUREs projects

  3. GES DISC MEaSUREs Projects

  4. GES DISC Recommendations GES DISC proposed recommendations for file names, formats (HDF5, HDF-EOS5, netCDF4), and metadata (CF-1 and S4PA) Work with data teams to reach ‘recommended’ requirements Goal to get consistency among the various MEaSUREs data projects Why? Primarily for benefit of users and also for interoperability software such as OPeNDAP Harness full power of 'self-describing' file formats

  5. Problems and Issues • Ad-hoc HDF5 implementations cause problems with OPeNDAP handler and other generic tools (particularly if no CF-1 conventions used). • HDF-EOS5 has a well described data model for a generic handler. Recommend CF-1/udunits conventions for attributes. • netCDF4 implementations have not been tested yet, except classic netCDF implementations using CF-1 conventions. • GES DISC would like to remove the HDF5 recommendation to prevent future problems.

  6. GES DISC MEaSUREs Page • For further information about these projects: http://disc.gsfc.nasa.gov/measures/ • OPeNDAP access to available data at: http://measures.gsfc.nasa.gov/opendap/

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