Experiment setup

  • EXP1:
    • WRFVar 3DVar (05/15/2004 at 00Z) on Domains 1&2
    • "cool-start" (i.e. background=WRF 12h forecast)
    • "Reference" observation file (CONV + GEOS winds + MODIS winds)
    • WRF 36h forecast on D1,2,3,4 (nested 2-way).
  • EXP2: idem to EXP1 + AIRSRET observations

Background file

1- Get Jordan "wrfout" files (see below)
2- Extract the analysis time into a separate NetCDF file (see below)
3- Make sure to set in WRFVar wrapper script: "export FILE_TYPE=wrfout"

Jordan:

I have re-run the polar WRF 12-hr forecast for the May 15, 2004 case.
You may get the files to use as a first-guess for the runs you wanted to do.
These files are on MSS. These have the hr 12 forecast that you want.

/POWERS/WRFV3/MAY04/3011_60_CTRL_PWRF_1412/WRFOUT_D01_051500

/POWERS/WRFV3/MAY04/3011_60_CTRL_PWRF_1412/WRFOUT_D02_051422

/POWERS/WRFV3/MAY04/3011_60_CTRL_PWRF_1412/WRFOUT_D03_051500

/POWERS/WRFV3/MAY04/3011_60_CTRL_PWRF_1412/WRFOUT_D04_051500

The run was initialized at 1200 UTC 14 May. The files contain
hourly output. The first hour in the files for D01, D03, and D04
is forecast hr 12, 0000 UTC 15 May. The third hour in the file
for D02 is forecast hr 12. Note that the D02 file timestamp is different.

if you don't want to use D03 and D04, then you only have to get
/POWERS/WRFV3/MAY04/3011_60_CTRL_PWRF_1412/WRFOUT_D01_051500
and
/POWERS/WRFV3/MAY04/3011_60_CTRL_PWRF_1412/WRFOUT_D02_051422

Hui-Chuan:

Split WRF NetCDF file:
ncks -d Time,0,0 in.nc out.nc

Time is the dimension name.
0,0 is the index - extracting the first timestep data.
1,1

Observations

CONV+MODIS_Winds Observation file from Jordan:

/ptmp/powers/obs
all obs + modis (global coverage):
obs_all_modis_qc.2004051500

obs after obsproc for 60-km domain 1
and 20-km domain 2:
/ptmp/powers
obs_gts.3dvar_d1_modis_qc
obs_gts.3dvar_d2_modis_qc

Executables and Scripts

WRF_DIR from Jordan: /ptmp/powers/pwrf_all_417.tar
WRFVAR_DIR and OBSPROC directory on bluefire:/ptmp/auligne/WRFV3.1
SCRIPTS_DIR=/ptmp/auligne/TOOLS/var/scripts

Experiment options (Namelist)

Jordan:

1) WRF namelists
/ptmp/powers
namelist_pwrf.input_1500
namelist_pwrf.input_1412

2) WRF-Var namelists
/ptmp/powers
namelist_3dvar.input_d1
namelist_3dvar.input_d2

Background Error Statistics

Jordan:

The BE files for the WRF 60/20 km grid setup
for AMPS are on bluefire on:
/ptmp/powers/be_domain1
/ptmp/powers/be_domain2

Boundary Conditions

wrfbdy files (GFS) from Jordan

Domains

  • WRFVar: Domain 1 (res=60km) and Domain 2 (20km)
  • WRF: D1, D2, D3 (6.6km) and D4 (2.2km). Forecast is nested 2-way.
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