[netcdfgroup] netCDF Operators NCO version 5.2.3 paddle imua

• To: NCO Announce Mail List <nco-announce@xxxxxxxxxxxxxxxxxxxxx>, netCDF Mail List <netcdfgroup@xxxxxxxxxxxxxxxx>
• Subject: [netcdfgroup] netCDF Operators NCO version 5.2.3 paddle imua
• From: Charlie Zender <zender@xxxxxxx>
• Date: Wed, 3 Apr 2024 13:51:44 -0700

netCDF Operators NCO version 5.2.3 paddle imua

http://nco.sf.net (Homepage, Mailing lists, Help)
http://github.com/nco/nco (Source Code, Issues, Releases)

What's new?
Version 5.2.3 introduces ...
ncclimo now automates the correct options for regional averages
of timeseries of subgridscale fields (useful for ELM/CLM).)
Other fixes to ncclimo splitter behavior are included.
No major new features are implemented.
Skip this release if these changes are not important to you.

Work on NCO 5.2.4 has commenced and aims to add support for Zarr S3
stores, and to enhance the vertical regridder.

Enjoy,
Charlie

NEW FEATURES (full details always in ChangeLog):

A. ncclimo automatically supports ELM/CLM regional averages.
Previously, ncclimo required non-obvious options to correctly invoke
regional averages of timeseries with sub-gridscale (SGS) fractions,
like surface models often have. Now, when ncclimo is invoked with the
surface model name as the processing type, e.g., ncclimo -P elm ...,
the command internally selects the correct SGS field (landfrac, in
this case) for weighting spatial averages.
ncclimo -P elm --split -v TBOT -s 1 -e 9 -o $out in*.nc
ncclimo --sgs_frc=landfrac --split -v TBOT -s 1 -e 9 -o $out in*.nc
http://nco.sf.net/nco.html#rgn_avg

B. ncremap's documentation has been updated to include newer weight
generation algotihms and naming conventions. In particular, three
new TempestRemap algorithms are supported and described. Moreover,
the preferred names of about eight algorithms have changed to align
with E3SM conventions. The older names are still supported to ensure
back-compatibility.
ncremap -a ncoaave --map=map.nc in.nc out.nc # New name
ncremap -a esmfaave --map=map.nc in.nc out.nc # New name
ncremap -a esmfbilin --map=map.nc in.nc out.nc # New name
ncremap -a traave --map=map.nc in.nc out.nc # New name
ncremap -a traave --map=map.nc in.nc out.nc # New name
ncremap -a trbilin --map=map.nc in.nc out.nc # New algorithm
ncremap -a trintbilin --map=map.nc in.nc out.nc # New algorithm
ncremap -a trfv2 --map=map.nc in.nc out.nc # New algorithm
http://nco.sf.net/nco.html#alg_typ

BUG FIXES:

A. ncclimo fixes an error where it would output, without warning,
unvarying, time-constant timeseries regional averages for ELM.
Those averages are incorrect, and they should vary with time.
There is no workaround. The solution is to upgrade.
Thanks to Sha Feng (PNNL) and Ryan Forsyth (LLNL) for reporting this.

B. ncclimo fixes a recently introduced bug where, when clm_md=hfc
or clm_md=hfs, ncclimo could fail to find input files when run from a
working directory distinct from the specified input directory.
There is no workaround. The solution is to upgrade.
Thanks to Tony Bartoletti (PNNL) for reporting this.

Full release statement at http://nco.sf.net/ANNOUNCE
--
Charlie Zender, Dept. of Earth System Science
University of California, Irvine 949-891-2429