<p><b>xinzhang</b> 2009-03-23 16:47:21 -0600 (Mon, 23 Mar 2009)</p><p>Save changes of chapter 6.<br>
</p><hr noshade><pre><font color="gray">Modified: trunk/wrf/UsersGuide/users_guide_chap6.doc
===================================================================
--- trunk/wrf/UsersGuide/users_guide_chap6.doc 2009-03-23 22:14:01 UTC (rev 149)
+++ trunk/wrf/UsersGuide/users_guide_chap6.doc 2009-03-23 22:47:21 UTC (rev 150)
@@ -1,5 +1,5 @@
-ࡱ
-
+
> setenv DAT_DIR your_choice_of_dat_dir
Here, "your_choice_of_dat_dir" is the directory where you aim to store the WRF-Var input data. Create this directory if it does not exist, and type
> cd $DAT_DIR
-Download the tutorial test data for a con200 case valid at 00 UTC 02 January 2007 from HYPERLINK "http://www.mmm.ucar.edu/wrf/src/data/WRFV3.1-Var-testdata.tar.gz" http://www.mmm.ucar.edu/wrf/src/data/WRFV3.1-Var-testdata.tar.gz
+Download the tutorial test data for a Tutorial case valid at 00 UTC 02 January 2007 from HYPERLINK "http://www.mmm.ucar.edu/wrf/src/data/WRFV3.1-Var-testdata.tar.gz" http://www.mmm.ucar.edu/wrf/src/data/WRFV3.1-Var-testdata.tar.gz
Once you have downloaded WRFV3.1-Var-testdata.tar.gz file to $DAT_DIR, extract it by typing
> gunzip WRFV3.1-Var-testdata.tar.gz > tar -xvf WRFV3.1-Var-testdata.tar
Now you should find the following three sub-directories/files under $DAT_DIR
-ob/200802
0512/ob.2008020512.gz### Observation data in little_r format rc/2008020512/wrfinput_d01 ###First guess file rc/2008020512/wrfbdy_d01 ### lateral boundary file be/be.dat ### Background error file
+ob/2008020512/ob.2008020512.gz # Observation data in little_r format rc/2008020512/wrfinput_d01 # First guess file rc/2008020512/wrfbdy_d01 # lateral boundary file be/be.dat # Background error file
+......
You should first go through the section Running Observation Preprocessor (OBSPROC) and have a WRF-3DVar-ready observation file (obs_gts_2008-02-05_12:00:00.3DVAR) generated in your OBSPROC working directory. You could then copy or move obs_gts_2008-02-05_12:00:00.3DVAR to be in $DAT_DIR/ob/2008020512/ob.ascii.
If you want to try 4D-Var, please go through the section Running Observation Preprocessor (OBSPROC) and have WRF-4DVar-ready observation files (obs_gts_2008-02-05_12:00:00.4DVAR,). You could copy or move the observation files to
$DAT_DIR/ob using following commands:
mv obs_gts_2008-02-!
05_12:00
:00.4DVAR $DAT_DIR/ob/2008020512/ob.ascii+
@@ -268,7 +269,7 @@
b. Run The Case3D-Var
The data for this case is valid at 12 UTC 5th February 2008. The first guess comes from the NCEP global final analysis system (FNL), passed through the WRF-WPS and real programs.
To run WRF-Var, first create a working directory, for example, WRFDA/var/test, then follow the steps below:
-cd WRFDA/var/test/tutorial (go to the working directory)
+cd WRFDA/var/test/tutorial
ln -sf WRFDA/run/LANDUSE.TBL ./LANDUSE.TBL
ln -sf $DAT_DIR/rc/2008020512/wrfinput_d01 ./fg (link first guess file as fg)
ln -sf WRFDA/var/obsproc/obs_gts_2008-02-05_12:00:00.3DVAR ./ob.ascii (link OBSPROC processed observation file as ob.ascii)
@@ -484,7 +485,7 @@
WRF-Var produces a number of diagnostic files that contain useful information on how the data assimilation has performed. This section will introduce you to some of these files, and what to look for.
Having run WRF-Var, it is important to check a number of output files to see if the assimilation appears sensible.
The content of some useful diagnostic files are as follows:
-cost_fn and grad_fn: These files hold (in ASCII format) WRF-Var cost and gradient function values, respectively, for the first and last iterations. However, if you run with PRINT_DETAIL_GRAD=true, these values will be listed for each iteration; this can be helpful for visualization purposes. The NCL script WRFDA/var/graphcs/ncl/plot_cost_grad_fn.ncl may be used to plot the content of cost_fn and grad_fn, if these files are generated with PRINT_DETAIL_GRAD=true.
+cost_fn and grad_fn: These files hold (in ASCII format) WRF-Var cost and gradient function values, respectively, for the first and last ite
rations. However, if you run with PRINT_DETAIL_GRAD=true, these values will be listed for each iteration; this can be helpful for visualization purposes. The NCL script WRFDA/var/graphcs/ncl/plot_cost_grad_fn.ncl may be used to plot the content of cost_fn and grad_fn, if these files are generated with PRINT_DETAIL_GRAD=true.
Note: Make sure that you removed first two lines (header) in cost_fn and grad_fn before you plot. Also you need to specify the directory name for these two files.
gts_omb_oma_01: It holds (in ASCII format) information of all observations that got passed in WRF-Var. Each observation has its observed value, quality flag, observation error, observation minus background (OMB), and observation minus analysis (OMA). This information is very useful for (both analysis or forecasts) verification purposes.
namelist.input: WRF-Var input namelist file. It displays all the non-default options which user defined. If any of your namelist defined options di
d not appear in this file, you may like to check its name an!
d match
it with the WRFDA/Registry/Registry.wrfvar.
@@ -525,7 +526,7 @@
This is a simple procedure performed by the WRF-Var utility called da_updated_bc.exe.
Note: Make sure that you have da_update_bc.exe in WRFDA/var/da directory. This executable should be created when you compiled WRF-Var code,
To run da_update_bc.exe, follow the steps below:
-cd WRFDA/var/test (the directory where you ran WRF-Var)
+cd WRFDA/var/test/update_bc
cp p $DAT_DIR/rc/2007010200/wrfbdy_d01 ./wrfbdy_d01 (IMPORTANT: make a copy of wrfbdy_d01 as the wrf_bdy_file will be overwritten by da_update_bc.exe)
vi parame.in
&control_param
@@ -748,10 +749,10 @@
-WRF-ARW V3: Users Guide 6- PAGE 20
+WRF-ARW V3: Users Guide 6- PAGE 10
-WRF-ARW V3: Users Guide 6- PAGE 21
+WRF-ARW V3: Users Guide 6- PAGE 11
@@ -772,12 +773,12 @@
-
+
h.
-&
h.
&
-&
-Px 4 #\'*.25@9
+Px 4 #\'*.25@9
& F
& F
&
-&
-h.
-& F
+&
+h.
&
-& F
-&
-h.
-&
.
-h.
+&
+& F
+& F
+h.
+&
+h.
l
-l
+l
l
-l
+l
l
-l
+l
l
-l
-k
-m
-h.
-r
{
-}
-
r
+t
+x
+
+
+h.
-
-
-h.
-
a$gd.
+h.
+h.
-&
-h.
+&
l
#
-l
+
+h.
#
l
#
-l
#
-l
+
#
-l
+
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
-h.
+l
#
l
+h.
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
#
l
#
-l
+l
l
#
-l
+l
#
l
#
-l
#
-l
#
-l
#
-l
#
-l
-h.
+h.
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
-h.
#
-l
+h.
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
#
l
#
-l
-h.
+h.
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
-h.
+h.
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
#
l
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
#
l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
-
-
-h.
#
-l
+
+h.
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
-
+l
#
l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
-
#
-l
+
#
-l
#
-l
#
-l
-
-h.
+h.
#
-l
#
-l
+l
l
#
-l
+l
#
l
#
-l
#
-l
+l
l
#
-l
-
+l
#
l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
#
l
l
-
-h.
+h.
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
d#
l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
+l
h.
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
-
-
+
-h.
+h.
d#
-l
d#
-l
d#
-l
-
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
d#
-l
+l
+
l
d#
-l
-
+l
#
l
-
#
-l
#
-l
+
+YU
h.
#
-l
#
-l
+l
l
#
-l
+l
#
l
#
-l
#
-l
#
-l
#
-l
+l
l
#
-l
+l
l
#
l
+
l
#
l
+
#
l
-3
+
#
l
l
-
l
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
h.
-h.
+h.
l
#
-l
-
+l
l
#
l
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
#
l
-
-
-
+
+
+
+
+
#
-l
+
+
#
-l
#
-l
#
-l
#
-l
#
-l
&
#
-l
+l
l
#
-l
+l
#
l
#
-l
-h.
#
l
l
#
-l
+l
+h.
#
l
#
-l
+l
l
#
l
+
#
l
#
-l
+l
#
l
l
+
#
l
#
-l
+l
#
l
#
l
#
l
+
#
l
#
-l
+l
#
l
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
#
l
#
-l
-h.
+h.
#
l
#
l
+
l
#
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
#
l
#
-l
+l
#
l
#
l
+
l
#
l
+
#
l
#
-l
+l
m
#
@@ -2214,174 +2217,165 @@
#
l
+
#
l
+
#
l
#
-l
-
-#
-h.
+l
#
l
#
l
-
+
+h.
#
l
-
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
-#
+
#
l
#
-l
+l
#
l
#
l
+
#
l
-&
-h.
+
+$
#
l
#
-l
+l
+$
+h.
#
l
#
l
+
#
l
+
#
l
#
-l
+l
#
l
#
l
+
#
l
+
)].w
@@ -2738,9 +2732,9 @@
>.$vܜR @̓ ';;$qU~PvVVW
pg^%
-31
+31
-
+
bWV
g0a@ >Dž>gz_ V:\n~{Iu>f{a {y®k'\"ᠰ~hǵʰ. kk~c})l6#쨰^:n|6ʰ&8=, Wk1[aͣքa;;̵f2,õo? ,d-m؛5apͰz0 eް^kXcusV=VxG(߾{X ~a{a
;2l]ذ0o ~a&
@@ -7472,7 +7466,7 @@
+
-
-
-
-
-
-
-ư
-
-
+
+
+
+
+@
+@
+Dư
+@
+
-l
-w
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+n
+r
+}
+
)
+
+
+
+
+
+
+
+
+
+
+
+
@5
g
m0ŀ
Š
0Š
0Š
0
0Š
a;0ŀ
0ŀ
0
0Š
Š
0Š
0Š
0
-l
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
)
+
+
+
+
+
+
+
+
+
+
+
+
@@ -7588,121 +7574,115 @@
-
+
@
@
-@
0
0
-
-
-
-
+@
0
0
+
+
+
+
+
-
-
+
+
-
+
+]
&
A
-X
-l
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Fi
-l
-m
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+a
+j
+n
+
+
+
+
+
+
+
+
+
+
+
+
+n
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
l,6
W"(
-`GT^5bBJ>*N
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+`GT^5bBJ>*N
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-o
+
wwo~wo~o~ww
ZJRo{Zg9RR^cRJR^Z^kZJRo{R
RZg9kZ^ZRNswZNsVZRcwkZRNskZJR^ckZZg9s^VkZVZRs
swo{wo{o{ww
wwwww
+
r
-
+
-
+
+
-
\ No newline at end of file
+
+
\ No newline at end of file
</font>
</pre>