dust mode

[sugalong]

Hello, I am studying a sandstorm in China. I simulated a sandstorm this year, and the simulated dust transport process will stop in the central part of China and not continue to transport to the east. I would like to ask why this is happening. I look forward to receiving feedback. Thank you. Here is my namelist. input
&time_control
run_days = 61,
run_hours = 0,
run_minutes = 0,
run_seconds = 0,
start_year = 2023, 2023,
start_month = 04, 04,
start_day = 16, 16,
start_hour = 00, 00,
start_minute = 00, 00,
start_second = 00, 00,
end_year = 2023, 2023,
end_month = 04, 04,
end_day = 23, 23,
end_hour = 00, 00,
end_minute = 00, 00,
end_second = 00, 00,
interval_seconds = 3600,
input_from_file = .true., .true.,
history_interval = 60, 180,
frames_per_outfile = 1, 1,
restart = .false.,
restart_interval = 72000,
write_hist_at_0h_rst = .false.
io_form_history = 2,
io_form_restart = 2,
io_form_input = 2,
io_form_boundary = 2,
io_form_auxinput2 = 2,
io_form_auxinput4 = 2
auxinput1_inname = "met_em.d<domain>.<date>",
auxinput4_inname = "wrflowinp_d<domain>",
auxinput4_interval = 60, 60,
debug_level = 0,
/

&domains
time_step = 50,
time_step_fract_num = 0,
time_step_fract_den = 1,
max_dom = 1,
s_we = 1, 1,
s_sn = 1, 1,
e_we = 632, 496,
e_sn = 433, 496,
s_vert = 1, 1,
e_vert = 50, 50,
num_metgrid_levels = 38,
num_metgrid_soil_levels = 4,
p_top_requested = 5000,
dx = 9000, 3000,
dy = 9000, 3000,
grid_id = 1, 2,
parent_id = 0, 1,
i_parent_start = 1, 110,
j_parent_start = 1, 100,
parent_grid_ratio = 1, 3,
parent_time_step_ratio = 1, 3,
feedback = 1,
smooth_option = 0,
/

&physics
mp_physics = 8, 1,
cu_physics = 3, 3,
ra_lw_physics = 4, 4,
ra_sw_physics = 4, 4,
bl_pbl_physics = 1, 1,
sf_sfclay_physics = 1, 1,
sf_surface_physics = 2, 2,
radt = 10, 10,
bldt = 0, 0,
cudt = 0, 0,
ifsnow = 1,
icloud = 1,
num_land_cat = 61,
num_soil_layers = 4,
/

&fdda
grid_fdda =1, 1,
gfdda_inname ="wrffdda_d<domain>"
gfdda_end_h =2400, 2400,
gfdda_interval_m = 60,
fgdt = 0
if_no_pbl_nudging_uv = 0, 0,
if_no_pbl_nudging_t = 0, 0,
if_no_pbl_nudging_q = 0, 0,
guv = 0.0003
gt = 0.0003
gq = 0.0003
/

&dynamics
w_damping = 1,
diff_opt = 1, 1,
km_opt = 4, 4,
diff_6th_opt = 0, 0,
diff_6th_factor = 0.12, 0.12,
base_temp = 290.
damp_opt = 0,
zdamp = 5000., 5000.,
dampcoef = 0.2, 0.2,
khdif = 0, 0,
kvdif = 0, 0,
non_hydrostatic = .true., .true.,
moist_adv_opt = 1, 1,
scalar_adv_opt = 1, 1,
/

&bdy_control
spec_bdy_width = 5,
spec_zone = 1,
relax_zone = 4,
specified = .true.,.false.,
nested = .false.,.true.,
/

&grib2
/

&namelist_quilt
nio_tasks_per_group = 0,
nio_groups = 1,
/

&chem
kemit = 1,
chem_opt =300, 401,
bioemdt = 0, 0,
photdt = 0, 0,
chemdt = 10, 10,
io_style_emissions = 0,
emiss_opt = 3, 3,
emiss_opt_vol = 0, 0,
emiss_ash_hgt =20000.,
chem_in_opt = 0, 0,
phot_opt = 0, 0,
gas_drydep_opt = 0, 0,
aer_drydep_opt = 1, 1,
bio_emiss_opt = 0, 0,
ne_area = 0,
dust_opt = 4,
dust_schme = 1,
dmsemis_opt = 1,
seas_opt = 1,
depo_fact = 0.25, 0.25,
gas_bc_opt = 0, 0,
gas_ic_opt = 0, 0,
aer_bc_opt = 1, 1,
aer_ic_opt = 1, 1,
gaschem_onoff = 0, 0,
aerchem_onoff = 1, 1,
wetscav_onoff = 0, 0,
cldchem_onoff = 0, 0,
vertmix_onoff = 1, 1,
chem_conv_tr = 0, 0,
conv_tr_wetscav = 0,
conv_tr_aqchem = 0,
biomass_burn_opt = 0, 0,
plumerisefire_frq = 30, 30,
have_bcs_chem = .false., .false.,
aer_ra_feedback = 0, 0,
aer_op_opt = 0, 0,
opt_pars_out = 0,
diagnostic_chem = 0,
/

 

[SLeGrand]

Can you please clarify your question? When you say "simulated dust transport process will stop in the central part of China," do you mean that WRF-Chem simulated dust emissions correctly, but the associated plume didn't advect as far east as you were expecting it to? or do you mean the dust transport simulation failed part way through your model run (e.g., a code or model configuration problem)?