REGRID Tutorial : Run regridder
cd to regridder directory from pregrid directory:
cd ../regridder
ls -l
and you should see this:
-rw-r--r-- 1
mesouser users 260096 Dec 12 2002
ALMX_FILE
drwxr-xr-x 2 mesouser users 8192
Dec 23 12:30 Doc/
-rw-r--r-- 1 mesouser users 283
Feb 18 2000 Makefile
-rw-r--r-- 1 mesouser users 84448
Dec 3 13:49 SIVT_FILE:1957-09-01_12
-rw-r--r-- 1 mesouser users 1944
Dec 12 2002 namelist.input
drwxr-xr-x 2 mesouser users 8192
Dec 23 12:30 src/
Edit namelist.input
for the regridder program.
- Again it is already edited to run the SOC case. But do check
if everything is set up correctly. Especially you should make
sure that the path for the TERRAIN file is correctly set.
- The example namelist file has the important namelist variables
highlighted. These will be the ones you must change if you run
your own case.
- For more details on the namelist variables, refer to Chapter
5 of the Tutorial Notes.
- Note: the namelist variable 'root'
refers to the prefixes in the file names before the ':' as generated
by pregrid. For example, if a pregrid output file name is NCEP_SST:2001-05-16_00,
then the root name is NCEP_SST.
Once the namelist file is edited, type the following to run regridder:
regridder >& log
&
If the job runs successfully, you should see the following file
generated:
-rw-r--r--
1 mesouser users 2177888 Mar 17 18:26 REGRID_DOMAIN1
This is the binary output file that can be used either in RAWINS,
LITTLE_R or INTERPF.
Note that the size of this file may vary depending on parameter
choices you have made in the TERRAIN program.
This file contains meteorological fields, winds, temperature,
relative humidity and geopotential height, on mandatory pressure
levels,1000, 850, 700, 500, 400, 300, 250, 200, 150, 100 mb [up
to ptop], and additional levels you specify in the namelist.input
file, and surface. If you choose certain datasets (such as Eta
AWIP, NCEP/NCAR Reanalysis), and use Vtable for SOIL variables
in pregrid, you also get a few soil temperature and moisture variables
in the regridder output.
If you are going to run the RAWINS program next (we do recommend
running LITTLE_R and not RAWINS), pay attention to the print
statement near the end of the log file: it tells you how to set
the parameter statement in RAWINS (which is a Fortran 77 program
and requires parameter statements):
****************************************************************************************
Attention RAWINS users!
Here is a handy PARAMETER statement
you can use for RAWINS.
Increase the LMX value by the
number of new pressure levels that you want RAWINS to add.
PARAMETER ( IMX =
35, JMX = 41, LMX
= 21)
****************************************************************************************
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If you used the IEXP option
(and AEXP=360.) in the TERRAIN program, the expanded domain
dimensions for domain 1 will be IX=45,
and JX=51. |
| |
Unlike program TERRAIN, REGRID doesn't
generate any plot files.
To check whether your output files are correct (REGRID_DOMAIN1),
you can run RIP / GRAPH
if you have NCAR Graphics on your machine, or the MM5toGrADS
converter if you have GrADS on your machine.
|
You can now move to the next program: LITTLE_R.
|
If you do not plan on running Objective Analysis (LITTLE_R/RAWINS) you can
move directly to the INTERPF
section. |
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