<p><b>xinzhang</b> 2009-03-18 13:19:30 -0600 (Wed, 18 Mar 2009)</p><p>Save for chapter 6 updates.<br>
</p><hr noshade><pre><font color="gray">Modified: trunk/wrf/UsersGuide/users_guide_chap6.doc
===================================================================
--- trunk/wrf/UsersGuide/users_guide_chap6.doc 2009-03-17 18:51:12 UTC (rev 143)
+++ trunk/wrf/UsersGuide/users_guide_chap6.doc 2009-03-18 19:19:30 UTC (rev 144)
@@ -1,5 +1,5 @@
-ÐÏࡱá
-
+
The basic gen_be utility for regional model consists of gen_be_stage0_wrf.exe, gen_be_stage1.exe, gen_be_stage2.exe, gen_be_stage2a.exe, gen_be_stage3.exe, gen_be_stage4_regional.exe, and gen_be_diags.exe.
da_updated_bc.exe is used for updating WRF boundary condition after a new WRF-Var analysis is done.
da_advance_time.exe is a very handy and useful tool for date manipulation. Type “da_advance_time” to see its usage instruction.
-Executables for running WRF-Var, gen_be and 3dvar_obs.exe are created at this step. Proceed to the next section to learn how to run OBSPROC.
+In addition to the executables for running WRF-Var, gen_be, obsproc.exe is created at this step too from version 3.1. Proceed to the next section to learn how to run OBSPROC.
Installing WRFNL and WRFPLUS (For 4D-Var only)
If you intend to run WRF 4D-Var, it is necessary to have installed the WRFNL (WRF nonlinear model) and WRFPLUS (WRF adjoint and tangent linear model). WRFNL is a modified WRF V3.1 and
can only be used for 4D-Var purposes. WRFPLUS is the adjoint and tangent linear model based on a simplified WRF model, which only include some simple physical processes such as vertical diffusion and large-scale condensation.
To install WRFNL:
@@ -156,20 +156,25 @@
Assign observational errors based on a pre-specified error file.
Write out the observation file to be used by WRF-Var in ASCII or BUFR format.
Plot the distribution of each observation type.
-The OBSPROC program—3dvar_obs.exe should be found under the directory WRFDA/var/obsproc/src if “compile all_wrfvar” was completed successfully.
+The OBSPROC program—obsproc.exe should be found under the directory WRFDA/var/obsproc/src if “compile all_wrfvar” was completed successfully.
a. Prepare observational data for 3D-Var
To prepare the observation file, say, at the analysis time 0h for 3D-Var, all the observations between ±1h (or ±1.5h) will be processed, as illustrated in following figure, which means that the observations between 23h and 1h are treated as the observations at 0h.
-Before running 3dvar_obs.exe, create the required namelist file namelist.3dvar_obs (see WRFDA/var/obsproc/README.namelist, or the section HYPERLINK \l "_Description_of_Namelist_1"
; Description of Namelist Variables for details).
+Before running obsproc.exe, create the required namelist file namelist.obsproc (see WRFDA/var/obsproc/README.namelist, or the section HYPERLINK \l "_Description_of_Namelist_1" Description of Namelist Variables for details).
For your reference, an example file named “namelist_3dvar_obs.wrfvar-tut” has already been created in the var/obsproc directory. Thus, proceed as follows.
- > cp namelist.3dvar_obs.wrfvar-tut namelist.3dvar_obs
-Next, edit namelist.3dvar_obs.
-In this namelist file, all you need is to change the full path and name of the observation file (ob.little_r) depending upon where this file is downloaded and where it finally resides.
-To run OBSPROC, type
- > 3dvar_obs.exe >&! 3dvar_obs.out
-Once 3dvar_obs.exe has completed successfully, you will see an observation data file, obs_gts_2007-01-02_00:00:00.3DVAR, in the obsproc directory. This is the input observation file to WRF-Var.
+ > cp namelist.obsproc.wrfvar-tut namelist.obsproc
+Nex!
t, edit
namelist.obsproc.
+In this namelist file, you need to change the following variables to accommodate your experiments.
+obs_gts_filename='/karri/users/xinzhang/support/ob/2007010200/ob.little_r'
+time_window_min = '2007-01-01_23:00:00',: The earliest time edge as ccyy-mm-dd_hh:mn:ss
+time_analysis = '2007-01-02_00:00:00', : The analysis time as ccyy-mm-dd_hh:mn:ss
+time_window_max = '2007-01-02_01:00:00',: The latest time edge as ccyy-mm-dd_hh:mn:ss
+use_for = '3DVAR', ; used for 3D-Var, default
+ To run OBSPROC, type
+ > obsproc.exe >&! obsproc.out
+Once obsproc.exe has completed successfully, you will see an observation data file, obs_gts_2007-01-02_00:00:00.3DVAR, in the obsproc directory. This is the input observation file to WRF-Var.
obs_gts_2007-01-02_00:00:00.3DVAR is an ASCII file that contains a header section (listed below) followed by observations. The meanings and format of observations in the file are described in the last six lines of the header sec
tion.
TOTAL = 24424, MISS. =-888888.,
SYNOP = 1014, METAR = 2551, SHIP = 270, BUOY = 295, BOGUS = 0, TEMP = 122,
@@ -208,12 +213,34 @@
b. Prepare observational data for 4D-Var
-To prepare the observation file, say, at the analysis time 0h for 4D-Var, the general way is to process all observations between ±1h (or ±1.5h), as described in following figure, which means that the observations between 23h and 1h are treated as the observations at 0h.
+To prepare the observation file, say, at the analysis time 0h for 4D-Var, all observations from 0h to 6h will be processed and grouped in 7 sub-window from slot1 to slot7, as illustrated in following figure.
+Before running obsproc.exe, create the required namelist file namelist.obsproc
+In this namelist file, you need to change the following variables to accommodate your experiments.
+obs_gts_filename='/karri/users/xinzhang/support/ob/2007010200/ob.little_r'
+time_window_min = '2007-01-002_00:00:00',: The earliest time edge as ccyy-mm-dd_hh:mn:ss
+time_analysis = '2007-01-02_03:00:00', : The analysis time as ccyy-mm-dd_hh:mn:ss
+time_window_max = '2007-
01-02_06:00:00',: The latest time edge as ccyy-mm-dd_hh:mn:ss
+use_for = '4DVAR', ; used for 3D-Var, default
+; num_slots_past and num_slots_ahead are used ONLY for FGAT and 4DVAR:
+num_slots_past = 3, ; the number of time slots before time_analysis
+num_slots_ahead = 3, ; the number of time slots after time_analysis
+To run OBSPROC, type
+ > obsproc.exe >&! obsproc.out
+Once obsproc.exe has completed successfully, you will see 7 observation data files:
+obs_gts_2007-01-02_00:00:00.4DVAR
+obs_gts_2007-01-02_01:00:00.4DVAR
+obs_gts_2007-01-02_02:00:00.4DVAR
+obs_gts_2007-01-02_03:00:00.4DVAR
+obs_gts_2007-01-02_04:00:00.4DVAR
+obs_gts_2007-01-02_05:00:00.4DVAR
+obs_gts_2007-01-02_06:00:00.4DVAR
+They are the input observation files to WRF-4DVar.
+
Running WRF-Var
a. Download Test Data
The WRF-Var system requires three input files to run: a) A WRF first guess input format file output from either WPS/real (cold-start) or WRF (warm-start), b) Observ
ations (in ASCII format or PREBUFR), and c) A background err!
or stati
stics file (containing background error covariance currently calculated via the NMC-method), using “gen_be” utility of WRF-Var.
@@ -738,10 +765,10 @@
-WRF-ARW V3: User’s Guide 6- PAGE 10
+WRF-ARW V3: User’s Guide 6- PAGE 8
-WRF-ARW V3: User’s Guide 6- PAGE 11
+WRF-ARW V3: User’s Guide 6- PAGE 1
@@ -762,12 +789,12 @@
-
+
h•+t
-&
&
&
-Päx 4 È#\'ð*„.2¬5@9
-
+Päx 4 È#\'ð*„.2¬5@9
& Fâ
&
-&
+&
+&
+& Fâ
& Fâ
-&
-& Fâ
-&
-h•+t
-&
+&
+h•+t
+&
+J
v
v
-
-W
-h•+t
+YU
+
+X
+a
+h•+t
l
-l
+l
+a
l
-l
-\
-\
+l
l
-l
+l
l
-l
tH
-h•+t
+t
+h•+t
+{
+š
¬
e¾
-h•+t
-h•+t
+`„tõgd•+t
+¾
amp;É
ƒ¹#
l
-&
-h•+t
+Î
+h•+t
+h•+t
l
-
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+Ñ
ƒ¹#
-l
ƒ¹#
-l
+h•+t
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+h•+t
ƒ¹#
-l
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+ã
+h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
+ã
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
+h•+t
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+é
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+ó
+h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
+l
+ó
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
+h•+t
ƒ¹#
l
l
-
-h•+t
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
d¹#
l
d¹#
-l
d¹#
-l
+h•+t
d¹#
-l
d¹#
-l
d¹#
-l
-h•+t
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
-
d¹#
-l
d¹#
-l
+h•+t
d¹#
-l
d¹#
-l
+
d¹#
-l
d¹#
-l
-h•+t
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
d¹#
-l
+l
l
d¹#
-l
+l
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+h•+t
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
-h•+t
ƒ¹#
-l
ƒ¹#
-l
+l
l
ƒ¹#
-l
+l
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
+
+
+
ƒ¹#
-l
+
+
+
+
+
ƒ¹#
-l
+l
+
+
+
+
+
+
l
ƒ¹#
-l
+l
+
+
+
+
+
+
l
ƒ¹#
l
+
+
+
+
+
+
+
l
ƒ¹#
l
+
+
+
+
+
ƒ¹#
l
-ñ
+›
ƒ¹#
l
l
-
+h•+t
+h•+t
l
-
-
-
-
-h•+t
-h•+t
+
l
ƒ¹#
-l
+l
l
ƒ¹#
l
+
ƒ¹#
l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
ƒ¹#
-l
&
ƒ¹#
-l
+l
l
¹#
-l
+l
+h•+t
¹#
l
¹#
-l
-
-
-
-
+l
¹#
l
-
-
-
-
-
-
+
l
¹#
-l
-
-
-
-
-
-
-
-
-
-
-
-
-h•+t
-
-
-
-
-
-
+l
¹#
l
¹#
-l
-
+l
l
¹#
l
+
¹#
l
¹#
-l
+l
¹#
l
l
+
¹#
l
¹#
-l
¹#
@@ -2073,12 +2129,12 @@
¹#
l
¹#
l
¹#
@@ -2087,7 +2143,7 @@
¹#
-l
¹#
@@ -2095,7 +2151,7 @@
l
¹#
@@ -2104,7 +2160,11 @@
¹#
-l
+h•+t
¹#
@@ -2113,12 +2173,12 @@
¹#
l
¹#
l
¹#
@@ -2127,12 +2187,7 @@
¹#
-l
-
-h•+t
¹#
@@ -2141,8 +2196,7 @@
¹#
l
-
l
¹#
l
¹#
@@ -2159,7 +2213,7 @@
¹#
-l
+l
¹#
@@ -2169,13 +2223,13 @@
¹#
l
+
¹#
l
¹#
@@ -2184,7 +2238,7 @@
¹#
-l
¹#
@@ -2193,13 +2247,13 @@
¹#
l
¹#
l
¹#
@@ -2209,7 +2263,7 @@
¹#
-l
¹#
@@ -2218,7 +2272,7 @@
¹#
l
l
¹#
l
¹#
@@ -2235,7 +2289,13 @@
¹#
-l
+
+"
+h•+t
¹#
@@ -2244,12 +2304,12 @@
¹#
l
¹#
l
¹#
@@ -2258,7 +2318,8 @@
¹#
-l
+
¹#
@@ -2267,18 +2328,13 @@
¹#
l
-
-h•+t
+
¹#
l
-
¹#
@@ -2287,8 +2343,7 @@
¹#
-l
-
¹#
@@ -2297,12 +2352,12 @@
¹#
l
¹#
l
¹#
@@ -2311,7 +2366,8 @@
¹#
-l
+"
¹#
@@ -2320,12 +2376,13 @@
¹#
l
+"
¹#
l
¹#
@@ -2334,7 +2391,7 @@
¹#
-l
¹#
@@ -2343,12 +2400,12 @@
¹#
l
¹#
l
¹#
@@ -2357,7 +2414,7 @@
¹#
-l
¹#
@@ -2366,12 +2423,20 @@
¹#
l
¹#
l
+h•+t
¹#
@@ -2380,7 +2445,7 @@
¹#
-l
¹#
@@ -2389,12 +2454,12 @@
¹#
l
¹#
l
¹#
@@ -2404,13 +2469,7 @@
¹#
-l
-h•+t
¹#
@@ -2419,12 +2478,12 @@
¹#
l
¹#
l
¹#
@@ -2433,7 +2492,7 @@
¹#
-l
¹#
@@ -2442,14 +2501,14 @@
¹#
l
¹#
l
+
ð
ùü)].wÿ
@@ -9760,7 +9819,7 @@
&
-
+
dh
+
+
-
+
+
+
+
+[
Æ°
-
-V
-ú
-
-
-
-
-
-
-
-
-
0
€ÓÁ
Á
©
Á
D
pÁ
0
+[
+u
+”
+Ë
+Ý
+ã
+í
+
+
+
+
+
+
+
+
+
+
+
0
+
]0Å
0
€
ÓÁ0Å
Å
©
àÓÁ0Å
0Å
0
-V
-ú
-
-
-
-
-
-
+[
+u
+”
+Ë
+Ý
+ã
+í
+
+
+
+
+
+
+
+
+
+
+
+@
+
+@
+
+
+
+
+
Ù
0« «
«
0
€
«
€
+
+
+
+
+
-
-
-
Ù
0« «
›
0
€
«
€
-
-
-
-
-
+
+
+"
-
-V
+
+
+
ð
-ð
+ð
-8
-J
-a
-|
-
-‚
-‹
-¡
-¯
-ê
-ó
-
-
-
-
-
-
-
+3
+E
<font color="gray">
+€
A
+
+
+
+
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
e
+i
+ž
+Ô
+Ý
+í
+
+
+
+
+
+
-8
-¯
-È
-û
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
ÿþþÿÿÿèÌüÅÿ
Øêä¶ÿÿÿÿÿÿÿÿÿ
l,6Âÿÿÿÿÿÿÿÿÿ
W"(
ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÕ
ÿÿÿÿÿÿÿÿ
2X
-ßä¢à`GT¾^5bÚô—úBJ>*NÞ ²ù¼§‰
-V
-ú
-
-
-
-
-
-
-
-
+ßä¢à`GT¾^5bÚô—úBJ>*NÞ ²ù¼§‰
+[
+Ë
+Ý
+ã
+í
+
+
+
+
+
+
+
+
+
+
-€€ÿÿ
+
+€€ÿÿ
w¾w¾ÿÿo~w¾o~o~ÿw¾w¾Âÿ
1ÿVµcR”VµkZ^÷ZÖÿJRo{ZÖg9R”R”^÷cR”ÿJR^÷ÿZÖ^÷kZJRo{R”òÿ
R”ZÖg9ÿÿkZ^÷ZÖR”Nsw½þÿZÖNsVµZÖþÿR”cw½þÿkZR”NskZþÿJR^÷þÿckZZÖg9sœ^÷VµkZÿÿVµZÖÿR”sœóÿ
sœÿw½ÿo{w½o{o{ÿw½w½õÿ
-w½ÿÿw½ÿÿw½ÿw½ÿw½ðÿ
+w½ÿÿw½ÿÿw½ÿw½ÿw½ðÿ
r
-
-
+
+
-
+
+
@@ -10496,8 +10570,8 @@
-
+
-
\ No newline at end of file
+
+
\ No newline at end of file
</font>
</pre>