| Section | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
...
| Code Block | ||||
|---|---|---|---|---|
| ||||
cd inidir/ob01
cp -rL /perm/rd/openifs/oifs_workshop_2017/expts-inidata/ob00/2015110[1-5]* . # this will take some time |
Please only copy the initial dates you intend to use. Each date uses 0.5 Gbyte of file storage.
| Code Block | ||||
|---|---|---|---|---|
| ||||
cd inidir/ob01
cp -rL /perm/rd/openifs/oifs_workshop_2017/expts-inidata/ob00/2015110[1-3]* . # this will take some time. |
Change experiment id
OpenIFS forecasts are identified by an 'experiment id', a four letter string.
Change experiment id
OpenIFS forecasts are identified by an 'experiment id', a four letter string.
An experiment could consist of a single forecast date or multiple starting dates. It can be of any length and could also include a restarted forecastAn experiment could consist of a single forecast date or multiple starting dates. It can be of any length and could also include a restarted forecast. However, an experiment only has one horizontal and vertical resolution.
...
| Code Block | ||
|---|---|---|
| ||
troifs0@cca-login3:~> createEX -d 2015110100 -e ob01 -i scratch/inidir -m 10 -i scratch/inidir -m 10 |
We tell this command it can find our new initial files in scratch/inidir. By default, this command will create the experiment directory also in scratch. Be careful not to confuse the initial data directory with the experiment directory. These should be kept separate.
| Info |
|---|
Note, one ensemble member '00' is always created, so the -m argument lists the total number of members and defaults to 1. Note directories Directories are numbered starting from zero. Only use 10 members in total otherwise you will not be able to compare with the climatological SST experiment which uses 10 members. |
...
| Code Block | ||||
|---|---|---|---|---|
| ||||
CTYPE="pf", ! the type of forecast: 'pf=perturbed', 'cf=control'. The control (unperturbed) forecast is only used in medium-range forecasts, not in seasonal forecasts.
NENSFNB=2, ! the ensemble member number.
LSTOPH_SPBS=true, ! enables the stochastic backscatter scheme in the model dynamics. This is only used in medium-range forecasts and will be 'false' for seasonal forecasts.
LSPSDT=true, ! enables the stochastic scheme for the physics tendencies. |
...
tendencies. |
The only namelist variable that needs changing in these experiments is NENSFNB, which the run_all_ens command does for you.
| Note |
|---|
The stochastic backscatter scheme LSTOPH_SPBS should be disabled for OpenIFS 43r3 and beyond as it's use has been deprecated since 40r1. It's impact is very small, less so on the newer cubic grids, and is not recommended. |
Create and submit Cray batch job
...
| Panel | ||||||
|---|---|---|---|---|---|---|
| ||||||
When the model completes the forecast successfully, the following files will be found in the output directory. ICMSH are the spectral fields, ICMGG are the gridpoint fields. ICMGGclim_10u ICMGGclim_ci ICMGGclim_lsp ICMGGclim_sd ICMGGclim_sst ICMGGclim_stl4 ICMGGclim_swvl3 ICMGGclim_tsr ICMSHclim_sp NODE.001_01 ICMGGclim_10v ICMGGclim_cp ICMGGclim_msl ICMGGclim_slhf ICMGGclim_stl1 ICMGGclim_str ICMGGclim_swvl4 ICMGGclim_ttr ICMSHclim_t ifs.stat ICMGGclim_2d ICMGGclim_e ICMGGclim_nsss ICMGGclim_sshf ICMGGclim_stl2 ICMGGclim_swvl1 ICMGGclim_tcc ICMSHclim_d ICMSHclim_vo oifs.log ICMGGclim_2t ICMGGclim_ewss ICMGGclim_q ICMGGclim_ssr ICMGGclim_stl3 ICMGGclim_swvl2 ICMGGclim_tp ICMSHclim_lnsp ICMSHclim_z ICMGGclim_2d ICMGGclim_e ICMGGclim_nsss ICMGGclim_sshf ICMGGclim_stl2 ICMGGclim_swvl1 ICMGGclim_tcc ICMSHclim_d ICMSHclim_vo oifs.log ICMGGclim_2t ICMGGclim_ewss ICMGGclim_q ICMGGclim_ssr ICMGGclim_stl3 ICMGGclim_swvl2 ICMGGclim_tp ICMSHclim_lnsp ICMSHclim_z |
Rerun the model job
A small file 'job1' (or jobN where N is the run number you used), is created in each of the ensemble member directories; 00, 01, 02, etc.
If for any reason the model fails, once you have determined the problem and corrected it, then the run can be submitted by:
| Code Block |
|---|
qsub job1 |
There is no need to rerun the run_all_ens command as this will resubmit ALL the ensemble members again.
| Anchor | ||||
|---|---|---|---|---|
|
...
This command only processes one date at a time. It needs to be run run separately for multiple dates in the same experiment id.
Monthly mean files
After the oifs_to_mv command finishes, the monthly mean files can be found in the directory 'mmeans' inside the top level date directory. For example, for experiment id ob01, date 2015110100, the directory is: ob01/2015110100/mmeans.
...
The monthly mean files can be transferred to ICTP with the ftp sftp command, to be used on the classroom PC with metview.
Useful Unix commands
| Code Block | ||
|---|---|---|
| ||
qsub job |
...
| Code Block |
|---|
Quota for $HOME and $PERM:
Disk quotas for user troifs0 (uid 16144):
Filesystem blocks quota limit grace files quota limit grace
cnasa1:/vol/home
226M 480M 500M 132 20000 22000
Disk quotas for user troifs0 (uid 16144):
Filesystem blocks quota limit grace files quota limit grace
cnasa2:/vol/perm
0 26624M 27648M 1 200k 210k
Quota for $SCRATCH ($TEMP) including $SCRATCHDIR ($TMPDIR):
Disk quotas for user troifs0 (uid 16144):
Filesystem kbytes quota limit grace files quota limit grace
/lus/snx11062 767099824 32212254720 32212254720 - 116570 5000000 5000000 -
Disk quotas for group ectrain (gid 1400):
Filesystem kbytes quota limit grace files quota limit grace
/lus/snx11062 767105640 0 0 - 118078 0 0 -
|
...
| Excerpt Include | ||||||
|---|---|---|---|---|---|---|
|