CWB Project
Welcome to the CWB Project page!
(January 2006)
The work
schedule for 2005 CWB project (27 April 2005) Work_Schedule (The doc file of
the Work Schedule Work_Schedule )
<
The meeting note
on 27 April 2005 Meeting_Note
A, Shell and code
Observation processing
1) CWB observation
Decoder program for CWB data including
the conventional data and bogus (TC bogus and Global bogus) data is OBS_FGGE_PROC.tar.gz
(20060117).
* "gunzip" and un-tarred this file, you will se a "README"
file to tell you how to use this program;
* The observation errors for global bogus soundings are
same as the real soundings specified by OBS preprocessor
"3DVAR_OBSPROC".
The observation errors for
TC bogus are defined in the "module_bogus_ty.F" under the
directory "OBS_FGGE_PRO/src":
! for
observation errors
REAL, DIMENSION (200) :: uerr,
verr
REAL
:: slperr, tc_lat, tc_lon, dis_degree, ratio
REAL,
PARAMETER :: max_dis_degree = 6.
REAL,
PARAMETER :: vb0 = 0.5, vb1 =
1.5 !wind error m/s at 1000hPa
REAL,
PARAMETER :: vt0 = 1.0, vt1 =
2.5 !wind error m/s at 400hPa
REAL,
PARAMETER :: ps0 = 50., ps1 =
200. !slp error Pa
* Because the CWB operational TC Bogus
data do not include the SLP (Sea Level Pressure) values, the subroutine
module_bogus_ty.F
is
modified to retrive the SLP from the 1000 hPa height based on the
hydrostatic assumption. (Y.R. Guo and H.-C. Lin, 20060117)
*
a utility advance_cymdh from the program advance_cymdh.f90 (20050902)
should
be under your ~/bin directory when you run OBS_FGGE_PROC
for the time
advancing.
2) GPS RO data
The shell script to
download the level2/wetPrf data from COSMIC/CDAAC is Download_wetPrf.csh
(20050902).
The decoder program
for wetPrf data (netCDF file to ASCII little_r file) is wetPrf_decoder.tar.gz
(20050902)
After "gunzip" and untarred this file, you'll see
a README file under the directory
"wetPrf_decoder" and a shell script "Run_wetPrf_decoder.csh". Read
these files, and edit the shell script to get
the ASCII little_r file for
3D-Var OBS preprocessor.
3) 3D-Var OBS preprocessor
There
are more functions (specification
for new GPS Ref errors, global bogus error, etc.) particular for
CWB project in 3D-Var OBS preprocessor,
which is different from that in the
released WRF-Var code. The 3D-Var preprocessor program must be
downloaded here: 3DVAR_OBSPROC.tar.gz
(20060202).
You can find what is updated from 3DVAR_OBSPROC/README
file after un-tarred the 3DVAR_OBSPROC.tar.gz.
Data
assimilation
The updated 3D-Var assimilation code
can be downloaded here: wrfvar_2.1.tar.gz
(20051027). This is the version 2.1 of the WRF-Var code with the most recent
bugs fixed. After un-tarred the
wrfvar_2.1.tar.gz, you can find the recent changes from the directory: wrfva_2.1/da_3dvar/changes.
After you got the new analysis at the initial
time by 3D-Var assimilation with WRF-Var, you need to update the
boundary condition file "wrfbdy" by
using
utility program downloaded from the above web site by clicking WRF BC update tar file from the web
site
http://www.mmm.ucar.edu/wrf/users/download/get_source2.html.
WRF model
The WRF forecast model can also
be dowloaded from the web below site by clicking WRF model tar file.
http://www.mmm.ucar.edu/wrf/users/download/get_source2.html
Background
error statistics (gen_be)
Document
for Stage0 (doc file)
A complete description of the Background
Error Statistics (BES) in WRF 3D-Var can be found from WRFVAR_BE, and the ppt file can be
downloaded
from WRFVAR_BE_Guo.ppt.
Before starting Stage0, user must split the
WRF model multiple times
forecast files into the single time
forecast files for input to Stage0. A utility program, wrfout_split,
has been
developed. Users can find the shell script, time_split.csh, after un-tarred the
"wrfout_split.tar.gz" file,
and edit this script for your application.
A simplified gen_be_Stage0
code has developed and intensively tested in PC Linux with CWB/WRF
forecast data (45-km domain, period of 2003081500Z to 2003091500Z).
The results are identical to
those from WRFVAR-Stage0 code, but with much short and clean code and
compiling much faster. This code can be applied to both MM5 and
WRF
regional models. A README file is included in the tar file (gen_be_Stage0.tar.gz
(20060111)).
B,
Status of the 2005 CWB project
The briefly description of the staus of 2005 CWB project
can be found from CWB_progress_200508(doc file) (not completed).
The presentation for
FORMOSA-3 (ppt file) Science
workshop, 7 October 2005, Taiwan.
We reported the 2005
CWB progresses to Mr. Shen, Director
of IT Division, CWB on 7 October 2005 in NCAR. The ppt file can be found from
Report_CWB_Oct2005, including
the plan for future work (2006 Tasks).
The annual report
(doc file) from NCAR has
been sent to Dr. Terng, CWB on 2 December 2005.
C, Typhoon Dujuan
experiments
The
Typhoon
Dujuan track data can be found from
Dujuan
Track .
The namelist files for experiment at 2003082812Z are
1) wrfsi.nl for running wrfsi with
NCEP AVN data from ftp.ucar.edu
anonymous account under directory: /pub/mmm/guo/AVN_Dujuan
2) namelist.3dvar_obs for
running 3D-Var OBS preprocessor 3DVAR_OBSPROC;
3)
namelist.nfs for running
converter nfs2wrfvar
(20051012) in
CWB machine (Linux):
msccs1.msc.cwb:/users4/hclin/WRFVAR
4)
namelist.3dvar for running
wrf 3D-Var: wrfvar;
5)
namelist.input for
running the WRF
model;
The 72-h WRF forecasts from the
6-h cycling mode by assimilating the conventional, global bogus, and TC
bogus data with WRFVAR starting from
1200 UTC 28 to 1200 UTC 31
August 2003 can be obtained from ftp.ucar.edu:anonymous account under
the directory:
/pub/mmm/guo/CYC_CVB
or from NCAR MASS Storage System (MSS) under the path:
/MAXX/palm/exp3/wrfout
D, Typhoon Haitang
The best track (plot) of Typhoon
Haitang (data).
The distribution of the GPS
RO soundings during the period of 2005071500Z to 2005072100Z.
The OBSERVATION data for Typhoon Haitang can be
found from she.cosmic.ucar.edu:/she6/hclin/data/Haitang_OBS.
E, Typhoon Longwang
The best track (plot) of Typhoon
Longwang (data).
The distribution of the GPS RO soundings during the period of 2005092800Z to 200510400Z.
The OBSERVATION data for Typhoon Longwang can be found from: she.cosmic.ucar.edu:/she6/hclin/data/Longwang_OBS.
For comments, send email to mesouser@ucar.edu
Last Modified: 28 April 2005
