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Change to the experiment directory labelled by the date chosen:
There are two experiment directories: cf000 and pf001. cf000 is for the control forecast which is not used here. pf001 is the single perturbation forecast.
Understand what the different files in the experiment directory are for. ICM* : these are the initial starting files. ICMGG* are the initial gridpoint files, ICMSH* are the initial spectral fields. Use the 'grib_ls' command to examine the initial files:
The file: namelistfc is the model 'NAMELIST'. It contains a list of variable settings or 'switches' that control what the model does. These variables are grouped into separate fortran namelists. |
Creating the OpenIFS batch job
The namelist file: namelistfc
cp namelistfc fort.4
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Set the ensemble member
In IFS, each ensemble member uses the stochastic physics schemes to generate uncertainty. A random number 'seed' is used by the stochastic scheme to generate a different forecast. This random number seed is changed by altering the ensemble member value in the model's namelist. Each ensemble member must have a unique number and therefore random number seed, in order to produce a different forecast.
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Make a copy of the namelist file and edit it to set the ensemble member value to the one you are given. Make sure you are in the 'pf001' directory.
and make the following changes to the namelist variables:
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Submit job: qsub jobN
Checking job status: qstatu
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