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,
/
&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,
/