1. login in to ecaccess.ecmwf.int using the training id and securID password.
2. ssh ccb to access the Cray HPCF.
3. Initial files for the observed SST experiment, 'ob00', and the climatological experiment 'clim', have been created and are made available in the directory : /perm/rd/openifs/oifs_workshop_2017/expts-inidata/
This directory contains multiple dates for each experiment:
ob00/2015110100 to ob00/2015110100 etc.
4. Before creating the experiment, we first need to create the initial data. If you plan to rerun the ob00 or clim experiments and use the initial data 'as-is' you can skip this step.
In this example, we will simply create a new experiment id from the existing ob00 experiment, without changing any of the data itself. This new experiment is intended for a 50 member ensemble run. We want to use a new experiment id to distinguish it from ob00 which only used 10 ensemble members.
First step is to make a copy of the ob00 data to your /scratch directory:
cd scratch # starting from your home directory mkdir -p inidir/ob50 # our new experiment id cd inidir/ob50 cp -rL /perm/rd/openifs/oifs_workshop_2017/expts-inidata/ob00/2015110100 .
Make sure you use the -L option! This ensures any 'linked' files are copied as actual files and not symbolic links (true for the fort.4 file). Not doing so will make the fort.4 uneditable.
Ignore any errors about files not being copies because of permission problems.
cd inidir/ob50 cp -rL /perm/rd/openifs/oifs_workshop_2017/expts-inidata/ob00/2015110[1-5]* .
cd inidir/ob50 cp -rL /perm/rd/openifs/oifs_workshop_2017/expts-inidata/ob00/201511* .