The netCDF Operators NCO version 4.7.8 have hatched.
http://nco.sf.net (Homepage, Mailing lists, Help)
http://github.com/nco (Source Code, Issues, Releases, Developers)
What's new? Version 4.7.8 contains many improvements to help convert
ESM output into CMIP6 timeseries format. In particular, ncclimo
coordinates better with ncremap when processing MPAS data and
regridding. They can use ncpdq's new feature to convert doubles to
floats, and raw binary output can now be byte-swapped to ease creation
of offline datasets for some models like WRF and CICE.
Work on NCO 5.0.0 has commenced "under the hood". The key leap in that
release will be support for netCDF4 user-defined types. Printing of
netCDF4 user-defined types ENUM and VLEN is ready now (though
unsupported) with the --udt flag. 5.0.0 will contain the finished
version of that, and progress on native weight generation by ncremap.
Enjoy,
Charlie
NEW FEATURES (full details always in ChangeLog):
A. ncclimo and ncremap accept the --d2f flag to turn-on the dbl_flt
packing map that converts double-precision to single-precision.
ncclimo --d2f ...
ncremap --d2f ...
http://nco.sf.net/nco.html#dbl_flt
http://nco.sf.net/nco.html#ncpdq
B. ncremap adds missing values to single-precision MPAS variables as
well as double. Previously it only added _FillValue to doubles.
http://nco.sf.net/nco.html#ncremap
C. NCO takes advantage of faster stride access in netCDF 4.6.2.
Previously NCO used its own workaround to accelerate strides.
It will continue to do so with older version of netCDF.
D. ncremap improves metadata annotation for Tempest monotr maps.
E. ncks provides the --bsa flag to invoke a byte-swap algorithm.
Setting this option causes unformatted binary output (with --bnr)
to be output in byte-swapped order relative to the host machine:
ncks -O -v uint32_var.? --bsa=1 -b foo.bnr in_grp.nc foo.nc
http://nco.sf.net/nco.html#bnr
BUG FIXES:
A. ncatted would exit when the -t option yielded no matches.
This has been fixed.
B. NCO could fail to build with netCDF 4.6.2 snapshots due to a
new way of handling the log_lvl option.
This has been fixed.
C ncremap could fail to execute ERWG commands when started in
a directory in which it had no write access. Now ncremap
invokes ERWG with --no_log to prevent ERWG write attempts
to a (possibly write-protected) working directory.
Full release statement at http://nco.sf.net/ANNOUNCE
--
Charlie Zender, Earth System Sci. & Computer Sci.
University of California, Irvine 949-891-2429 )'(
