pkg-descr

CDO is a collection of command line Operators to manipulate and analyse Climate
model Data. Supported file formats are GRIB, netCDF, SERVICE, EXTRA and IEG.
There are more than 250 operators available. The following table gives a short
overview about the main categories.

* File information (info, sinfo, diff, ...)
* File operations (copy, cat, merge, split*, ...)
* Selection (selcode, selvar, sellevel, seltimestep, ...)
* Missing values (setctomiss, setmisstoc, setrtomiss)
* Arithmetic (add, sub, mul, div, ...)
* Mathematical functions (sqrt, exp, log, sin, cos, ...)
* Comparision (eq, ne, le, lt, ge, gt, ...)
* Conditions (ifthen, ifnotthen, ifthenc, ifnotthenc)
* Field statistic (fldsum, fldavg, fldstd, fldmin, fldmax, ...)
* Vertical statistic (vertsum, vertavg, vertstd, vertmin, ...)
* Time range statistic (timavg, yearavg, monavg, dayavg, ...)
* Ensemble statistic (enssum, ensavg, ensstd, ensmin, ...)
* Regression (detrend)
* Field interpolation (remapbil, remapcon, remapdis, ...)
* Vertical interpolation (ml2pl, ml2hl)
* Time interpolation (inttime, intyear)

WWW: http://www.mpimet.mpg.de/fileadmin/software/cdo/

pkg-message

Since CDO version 1.0.6, three new environment variables were introduced:
- CDO_DISABLE_HISTORY:
If set to 1, the netCDF history attribute of input datasets is not used.
- CDO_DISABLE_FILESUFFIX:
If set to 1, file suffix (.grb, .nc, ...) will not be added to the output
file name of split*.
- IGNORE_ATT_COORDINATES:
If set to 1, netCDF variable attribute "coordinates" will be ignored.