ICE Thickness/Accumulation - CANICE variable in the WRF

utkarsh-7 · Apr 6, 2023

Hi,
I was actually facing difficulty in figuring out whether the CANICE(mm) output in WRF is incremental or cumulative(total ice accumulated from start till that particular time instant)?
The reason why I am asking is because I ran a simulations for an ice storms and then after observing the output this variable was showing very small values when actually it should be showing very large values of ice accumulation.

Also if you can suggest some changes in the namelist files to get accurate output for ice accumulation.

Output -

Time

south_north

west_east

XLAT

XLONG

XTIME

CANICE

1	0	32.68152	-96.9915	03-02-2022 09:20	0
1	1	32.68532	-96.9635	03-02-2022 09:20	0.034570932
1	2	32.68915	-96.9354	03-02-2022 09:20	0.035885155
1	3	32.69304	-96.9074	03-02-2022 09:20	0.047002126
1	4	32.69687	-96.8793	03-02-2022 09:20	0.054122966
1	5	32.7007	-96.8513	03-02-2022 09:20	0.08609927
1	6	32.7045	-96.8232	03-02-2022 09:20	0.1374387
1	7	32.70839	-96.7952	03-02-2022 09:20	0.3059743

Namelist files -
wps -

&share
nocolons = .true.
max_dom = 2
start_date = '2022-02-02_00:00:00', '2022-02-02_00:00:00'
end_date = '2022-02-03_21:00:00', '2022-02-03_21:00:00'
interval_seconds = 10800
/

&geogrid
parent_id = 1, 1
parent_grid_ratio = 1, 3
i_parent_start = 1, 3
j_parent_start = 1, 4
e_we = 10, 10
e_sn = 10, 10
map_proj = 'lambert'
dx = 9000
dy = 9000
ref_lon = -96.808891
ref_lat = 32.779167
geog_data_res = 'lowres', 'lowres'
geog_data_path = '/wrf_14/DATA/geog/WPS_GEOG_LOW_RES'
truelat1 = 3.5
truelat2 = 7.0
stand_lon = 4.0
/

&metgrid
fg_name = 'FILE'
/

input -

&time_control
start_year = 2022, 2022
start_month = 2, 2
start_day = 02, 02
start_hour = 00, 00
end_year = 2022, 2022
end_month = 2, 2
end_day = 03, 03
end_hour = 21, 21
interval_seconds = 10800
input_from_file = .true., .true.
history_interval = 10, 10
frames_per_outfile = 100, 100
restart = .false.
restart_interval = 7200
io_form_history = 2
io_form_restart = 2
io_form_input = 2
io_form_boundary = 2
start_minute = 0, 0
start_second = 0, 0
end_minute = 0, 0
end_second = 0, 0
nocolons = .true.
/

&domains
time_step = 40
time_step_fract_num = 0
time_step_fract_den = 1
max_dom = 2
e_we = 10, 10
e_sn = 10, 10
e_vert = 44, 44
p_top_requested = 1000
num_metgrid_levels = 34
num_metgrid_soil_levels = 4
dx = 9000.0, 3000.0
dy = 9000.0, 3000.0
grid_id = 1, 2
parent_id = 1, 1
i_parent_start = 1, 3
j_parent_start = 1, 4
parent_grid_ratio = 1, 3
parent_time_step_ratio = 1, 3
feedback = 1
smooth_option = 0
/

&physics
physics_suite = 'CONUS'
sf_surface_physics = 4,4
mp_physics = 4, 4
sf_sfclay_physics = 2, 2
mp_zero_out = 2
cu_physics = 1, 1
ra_lw_physics = 1,1
ra_sw_physics = 1,1
bl_pbl_physics = 2,2
isfflx = 1
radt = 9, 3
bldt = 0, 0
cudt = 0, 0
icloud = 2
num_land_cat = 21
sf_urban_physics = 1, 1
/

&noah_mp
dveg = 4,
opt_crs = 1,
opt_btr = 1,
opt_run = 3,
opt_sfc = 1,
opt_frz = 1,
opt_inf = 1,
opt_rad = 3,
opt_alb = 2,
opt_snf = 1,
opt_tbot = 2,
opt_stc = 1,
opt_gla = 1,
opt_rsf = 1,
opt_soil = 1,
opt_pedo = 1,
opt_crop = 0,
/

&dynamics
hybrid_opt = 2
w_damping = 0
diff_opt = 1, 1
km_opt = 4, 4
diff_6th_opt = 0, 0, 0
diff_6th_factor = 0.12, 0.12
base_temp = 290.0
damp_opt = 3
zdamp = 5000.0, 5000.0
dampcoef = 0.2, 0.2
khdif = 0, 0
kvdif = 0, 0
/

&bdy_control
spec_bdy_width = 5
specified = .true.
/

&fdda
/

&namelist_quilt
/

Thank you for your help,
Utkarsh

ICE Thickness/Accumulation - CANICE variable in the WRF

utkarsh-7

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