NetCDF 4.4.1

Version 4.4.1 of the NetCDF-C library is now available. This release provides official support for libhdf5 1.10.0.

Note: netCDF library 4.4.0 or earlier, combined with libhdf5 1.10.0 or greater, will generate netCDF-4 format files that cannot be read by software using earlier versions of libhdf5 (1.8.x), regardless of the version of netCDF.

NetCDF Library VersionHDF5 Library VersionMinimum HDF5 version required to read (no minimum version of netCDF for reading)
4.4.0 or earlier1.8.x1.8.x
4.4.0 or earlier1.10.0+1.10.0+
4.4.1 or later1.10.0+ or 1.8.x1.8.x

Note: As documented, netCDF-4 format support requires a minimum hdf5 library version of 1.8.9.

Note: NetCDF-3 format files are not affected by this issue. NetCDF-3 files remain forward and backward compatible through all netCDF library versions 3.x through 4.x.

Additional highlights of this release beyond support for libhdf5 version 1.10.0 include:

  • Modified nc_inq_type() so that it would work more broadly without requiring a valid ncid.
  • Speedier var and dim retrieval in nc3 files.
  • Added provenance information to files created. This information consists of a persistent attribute named _NCProperties plus two computed attributes, _IsNetcdf4 and _SuperblockVersion.
  • Starting with release 4.4.1, netCDF-4 files will have superblock version 0 instead of superblock version 2, as in previous netCDF versions. This is due to a workaround required to avoid backward read and write incompatibility when using libhdf5 1.10.x or greater. Superblock versions 0 and 2 appear to be forward- and backward-compatible for both reading and writing. Superblock 1 files made by direct HDF5 applications are hypothetically also compatible, but this is not yet confirmed. Other than a different superblock number, all user data and metadata should remain consistent.
  • Bug fixes and build process enhancements.

Detailed information about the release is available in the Release Notes.

Complete information about using this release can be found in the NetCDF Documentation.

Source-code zip and tar.gz archives can be found on Unidata's NetCDF-C GitHub site.

Pre-built Windows binaries for use with Visual Studio) are available from this page.

Users of the netCDF FORTRAN and C++ Libraries Note

You can use the upgraded C library without upgrading your FORTRAN or C++ library.


I would like to read mateorological data

Posted by Hiro Y on July 07, 2016 at 08:16 PM MDT #

I would like to read mateorological data for Sudan

Posted by Muaz Omer on July 12, 2016 at 03:09 AM MDT #

use space time cube to mining space time pattern

Posted by gishong on July 17, 2016 at 08:48 PM MDT #

I have a hope to construct wrf model for internatinal cooperation.

Posted by Nobutaka Noguchi on August 17, 2016 at 08:16 PM MDT #

i would like to know more on how to use NetCDF to read/convert HDF files to excel format data

Posted by sharafa bolaji on August 20, 2016 at 03:43 PM MDT #

i need a link to a sample VBA program that can succesfully read MxD04/MxD08 NetCDF data

Posted by sharafa bolaji on August 22, 2016 at 07:14 PM MDT #

to read EMEP deposition data

Posted by eloy sara on September 12, 2016 at 04:18 AM MDT #

I am engage in weather forcast ,especialy in short-term climate forcast.

Posted by QIjian Zhang on September 12, 2016 at 08:35 PM MDT #

I need to run lis

Posted by Seung Hyub, Baeck on December 22, 2016 at 01:26 AM MST #

i want netcdf for my job

Posted by thanh on December 25, 2016 at 08:18 PM MST #

I need to run POM2K

Posted by Huangxing on December 26, 2016 at 02:27 AM MST #


Posted by gaolei on February 01, 2017 at 08:48 AM MST #

Data is needed for research purposes.

Posted by jung young sim on February 20, 2017 at 07:33 AM MST #

For research. Thank you!

Posted by xiaohou on February 22, 2017 at 12:12 PM MST #

I would like to read the atmospheric data, whihc are in .nc and hdf mode. How will I read it? Kindly send the link of software.

Posted by Dr. Vimal Saraswat on March 06, 2017 at 03:09 AM MST #


You can download the netCDF libraries here:

Documentation is available here:

If you have additional questions, please contact

Posted by unidatanews on March 06, 2017 at 07:05 AM MST #

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