Warning

Iceberg was decommissioned on 30th November 2020. Users of Iceberg need to switch to using ShARC and/or Bessemer instead.

CDO¶

CDO is a collection of command line Operators to manipulate and analyse Climate and NWP model Data. Supported data formats are GRIB 1/2, netCDF 3/4, SERVICE, EXTRA and IEG. There are more than 600 operators available.

Interactive Usage¶

After connecting to Iceberg (see Establishing a SSH connection), start an interactive session with the qsh or qrsh command.

To add the cdo command to the system PATH, execute the following command

module load apps/gcc/5.3/cdo/1.7.2

Documentation¶

The CDO manual is available online at https://code.zmaw.de/projects/cdo/embedded/index.html

Installation notes¶

Installation

(1) Download the latest current version:

    wget https://code.zmaw.de/attachments/download/12350/cdo-current.tar.gz

(2) Extract the files into a working directory  ( I have used /data/te1st/2016/cdo ) :

    gunzip cdo-current.tar.gz
    tar -xvf cdo-current.tar

(3) Install the program  ( I have used /usr/local/extras/CDO ):

    module load compilers/gcc/5.3
    ./configure  --prefix=/usr/local/extras/CDO --with-netcdf=/usr/local/extras/netcdf/4.3.2
    make install

Modulefile¶

The module file is on the system at /usr/local/modulefiles/apps/gcc/5.3/cdo

Its contents are

#%Module1.0#####################################################################
##
## CDO Climate Data Operators Module file.
##

## Module file logging
source /usr/local/etc/module_logging.tcl
##

proc ModulesHelp { } {
       puts stderr "Makes Climate Data Operator $version available"
 }

set version 1.7.2
set BIN_DIR /usr/local/extras/CDO/$version

module-whatis   "Makes CDO (Climate Data Operators) $version available"

prepend-path PATH $BIN_DIR/bin