NetCDF-4

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NetCDF-4

• Combining the Strengths of NetCDF and HDF5
• Ed Hartnett, Unidata
• 10/28/2004

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Project Contacts and Information

• NetCDF-4 Web site
• http//my.unidata.ucar.edu/content/software/netcdf
  /netcdf-4/index.html
• PI Russ Rew, Unidata russ_at_unidata.ucar.edu
• PI Mike Folk, NCSA mfolk_at_ncsa.uiuc.edu
• Ed Hartnett, Unidata ed_at_unidata.ucar.edu

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NetCDF-4 Architecture
NetCDF-4
NetCDF-3
HDF5
HDF5 Files, netCDF-4 Files
netCDF-3 Files
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NetCDF-4 HDF5 File
Global Objects
Group Metadata
temperature
Variable Metadata
Variable Metadata
Attribute Metadata
Attribute Metadata
Dimension Metadata
pressure
Attribute
comments
Variable Metadata
Dataset
Attribute Metadata
netCDF-4 Metadata
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Schedule

• Release NetCDF 4.0 alpha1 - October, 2004
• Multiple dynamic dimensions.
• Merge with netCDF-3.6.0 to form netCDF-4.0 alpha.
  (Requires that HDF5 be installed).
• NetCDF Release 4.0 alpha2 - January, 2005
• Parallel I/O
• Additional data types, including string, and
  compound data.
• Anonymous dimensions.

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Acknowledgement

• This work is supported by the NASA Earth Science
  Technology Office under NASA award AIST-02-0071.