Version 5.3.8 of the netCDF Operators (NCO) has been released. NCO is an Open Source package that consists of a dozen standalone, command-line programs that take netCDF files as input, then operate (e.g., derive new data, average, print, hyperslab, manipulate metadata) and output the results to screen or files in text, binary, or netCDF formats.

The NCO project is coordinated by Professor Charlie Zender of the Department of Earth System Science, University of California, Irvine. More information about the project, along with binary and source downloads, are available on the SourceForge project page.

From the release message:

Version 5.3.8 contains fixes to ncclimo problems introduced with 5.3.7. The ncclimo "flexible-months" feature suffered from incorrect behavior for some inputs, and introduced a regression in seasonal filenames. The only new feature is that ncclimo now supports generating climos from high-frequency input data that are instantaneous (not mean) values. Documentation now reflects the new CF Convention Homepage URL.

Users who upgraded to 5.3.7 should upgrade to 5.3.8, and 5.3.7 should not be used anymore.

New Features
  1. ncclimo now supports generating climos from high-frequency input data that are instantaneous (not mean) values. This mainly means that that the time bounds and climatology bounds variables now use the instantaneous time from the original time coordinate input, rather than the average value of the time coordinate input.
    http://nco.sf.net/nco.html#ncclimo
  2. All links to documentation now point to the newish CF Homepage at https://cf-convention.github.io/cf-conventions.

Additional details are available in the ChangeLog.