Radiance Data Assimilation in 4dvar

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Wilson
Posts: 2
Joined: Mon Jul 20, 2020 1:20 am

Radiance Data Assimilation in 4dvar

Post by Wilson » Mon Jul 20, 2020 1:37 am

Hello, in WRFDA (V3.8.1), I use 4DVAR to run Radiance Data Assimilation.Although I have opened the deviation correction, the deviation correction does not work.OMB With BC is the same as OMB No BC.But when I use 3d variational time, the deviation correction works fine.
&wrfvar1
var4d=true,
var4d_lbc=false,
var4d_bin=3600,
var4d_bin_rain=21600,
print_detail_obs=.true.,
print_detail_grad=.true.,
/
&wrfvar2
/
&wrfvar3
num_fgat_time=7,
/
&wrfvar4
use_amsuaobs=.true.
/
&wrfvar5
check_max_iv=true,
/
&wrfvar6
max_ext_its=1,
ntmax=1,
orthonorm_gradient=true,
/
&wrfvar7
cv_options=3
as1(3) = 0.1,0.4,0.6
as2(3) = 0.1,0.4,0.6
as3(3) = 0.1,0.4,0.6
as4(3) = 0.1,0.4,0.6
as5(3) = 0.1,0.4,0.6
/
&wrfvar8
/
&wrfvar9
/
&wrfvar10
test_transforms=false,
test_gradient=false,
/
&wrfvar11
/
&wrfvar12
/
&wrfvar13
/
&wrfvar14
rtminit_nsensor=1,
rtminit_platform=1
rtminit_satid=19
rtminit_sensor=3
thinning=true,
thinning_mesh=60.0,
qc_rad=false,
write_iv_rad_ascii=true,
write_oa_rad_ascii=true,
rtm_option=2,
only_sea_rad=false,
crtm_cloud=true,
use_varbc=true,
use_crtm_kmatrix =true,
freeze_varbc=false,
varbc_factor=1,
/
&wrfvar15
/
&wrfvar16
/
&wrfvar17
/
&wrfvar18
analysis_date=2015-08-03_06:00:00.0000,
/
&wrfvar19
/
&wrfvar20
/
&wrfvar21
time_window_min=2015-08-03_06:00:00.0000,
/
&wrfvar22
time_window_max=2015-08-03_12:00:00.0000,
/
&wrfvar23
/
&time_control
run_hours=6,
start_year=2015,
start_month=08,
start_day=03,
start_hour=06,
end_year=2015,
end_month=08,
end_day=03,
end_hour=12,
interval_seconds=21600,
/
&fdda
/
&domains
time_step=180,
e_we=121,
e_sn=121,
e_vert=42,
num_metgrid_levels=32,
p_top_requested=1000,
interp_type=2,
t_extrap_type=2,
dx=30000,
dy=30000,
/
&dfi_control
/
&tc
/
&physics
mp_physics=2,
ra_lw_physics=1,
ra_sw_physics=1,
radt=30,
sf_sfclay_physics=1,
sf_surface_physics=2,
bl_pbl_physics=1,
cu_physics=1,
cudt=0,
num_soil_layers=4,
mp_zero_out=2,
co2tf=0,
/
&scm
/
&dynamics
w_damping=1,
diff_opt=1,
km_opt=4,
dampcoef=0.2,
time_step_sound=4,
base_temp=290.0,
use_baseparam_fr_nml=true,
/
&bdy_control
specified=true,
real_data_init_type=3,
/
&grib2
/
&fire
/
&namelist_quilt
/
&perturbation
trajectory_io=true,
enable_identity=false,
jcdfi_use=false,
jcdfi_diag=1,
jcdfi_penalty=1000.0,
var4d_detail_out=true,
/

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