Model help

Access prepIFS via java interface here.

Click here for top level model page.
Click here for main page.

Useful information

Setting up a forcing run

To copy data into your data directory (for use by the model)

ecp filename.grib ec:/rg6/Forcing/filename.grib

Note: Also els.

To introduce the anomalies, once a job is submitted it should be suspended (via cdp), and the ocean.h file amended. This can be found in;

/vol/msverify/sms/USERID/b.../include/ocean.h

An example of the additions needed for a combines taux, tauy anomaly run is as follows:

OCPERT_TAUX='x/1/grib/""'
OCEC_TAUX="/rg6/Forcing/force_taux_new.grib"
OCPERT_TAUY='y/1/grib/""'
OCEC_TAUY="/rg6/Forcing/force_tauy_new.grib"

The format for the control line is as follows:

OCPERT_TAUX='x/1/grib/""'

where....	x	=	taux perturbation
	1	=	add perturbation (0 indicates substitution)
	grib	=	format (grib/ieee etc)

Note: If model falls over at the

/rg6/b../ox/control/control0/an/model

stage due to errors in the perturbation fields (and said fields are then updated), at least one step needs to be rerun : getoce. To make sure I also reran forcing, linkoce and addforce.

Forecast specific

OCODBROOT
In ocean.h, the variable OCODBROOT needs to be set to a directory that can be written to (default directory cannot). Therefore change (in my case)
```
OCODBROOT=/vol/seasonal/newodb
```
to
```
OCODBROOT=/home/ms/gb/rg6/seasonal/newodb
```
The ./seasonal/newodb directory structure needs to be created before hand.
CPU time
With increased diagnostic output, the archibe stage can run out of CPU time. In:
```
/vol/msverify/sms/rg6/b***/arcfc.sms
```
replace
```
# QSUB -lt 1000
```
with a higher limit.
Wrong parameters
On most of my model runs, fields requested for archiving don't exist. This should actually be fixed in prepIFS now, but will persist if I create new runs by copying old
In ocsfc.sms, change (two instances)
```
param     = 229/230/231/232/233/245,
```
to
```
param     = 229/233/245,
```
Note: Also make changes (twice) in include/wm_create_sfc and include/mm_create_sfc.

Steve George | s.e.george@reading.ac.uk

Last Updated : Wed Apr 21 13:08:08 BST 2004