I am having a problem with the global configuration of WRF. Over the polar regions, there are standing waves in vertical velocity in almost the whole column. Please have a look on the file in the link below for vertical velocity on an eta level at around 100 hPa.
https://drive.google.com/folderview?id=0B9BCWDo1IXS8SWhOdmEzQWF6dzg&usp=sharing
The simulation is initiated and set run freely for 2 months, with SST and sea-ice updated every 6 hours. ERA-Interim (N48) was used for initiation and lower boundary forcing. The horizontal resolution is approximately 2.8 x 2.8 in degree.
Has anyone using the global configuration or limited domains over the polar regions met this problem? Is there something wrong with my configuration? This is my first experience with the global configuration of WRF.
Thanks for any suggestions and helps!
Here is my namelist.input
- Code: Select all
&time_control
run_days = 61,
run_hours = 0,
run_minutes = 0,
run_seconds = 0,
start_year = 2000
start_month = 08,
start_day = 01,
start_hour = 00,
start_minute = 00,
start_second = 00,
end_year = 2000,
end_month = 10,
end_day = 01,
end_hour = 00,
end_minute = 00,
end_second = 00,
history_interval = 360,
interval_seconds = 21600
input_from_file = .true.,
frames_per_outfile = 300,
restart = .false.,
restart_interval_h = 720,
io_form_history = 2
io_form_restart = 2
io_form_input = 2
io_form_boundary = 2
debug_level = 0
auxinput4_inname = "wrflowinp_d<domain>",
auxinput4_interval = 360,
io_form_auxinput4 = 2
diag_print = 1,
/
&domains
time_step = 600
time_step_fract_num = 00
time_step_fract_den = 112
max_dom = 1,
e_we = 129,
e_sn = 65,
e_vert = 60,
p_top_requested = 100,
num_metgrid_levels = 38,
num_metgrid_soil_levels = 4,
dx = 312686.7,
dy = 312686.7,
p_top_requested = 100
grid_id = 1,
parent_id = 0,
i_parent_start = 1,
j_parent_start = 1,
parent_grid_ratio = 1,
parent_time_step_ratio = 1,
feedback = 1,
smooth_option = 00,
eta_levels = 1.000, 0.993, 0.983, 0.97, 0.954,
0.934, 0.909, 0.88, 0.853079, 0.8261579,
0.7992369, 0.7723159, 0.7226719, 0.6756638, 0.6311747,
0.5890926, 0.5493093, 0.5117208, 0.4762273, 0.4427324,
0.4111437, 0.3813723, 0.3533327, 0.3269428, 0.3021236,
0.2787994, 0.2568975, 0.2363479, 0.2170837, 0.1990405,
0.1821567, 0.166373, 0.151751, 0.1384065, 0.1262277,
0.1151129, 0.1049691, 0.09571141, 0.08726252, 0.07955173,
0.07251457, 0.06609218, 0.05488158, 0.04554416, 0.03776693,
0.0312892, 0.02589383, 0.02139997, 0.01765699, 0.01453943,
0.01194278, 0.008838166, 0.006478205, 0.004684289, 0.003320651,
0.001997098, 0.001078898, 0.0004419062, 9.581947e-05, 0.,
/
&physics
mp_physics = 3,
ra_lw_physics = 5,
ra_sw_physics = 5,
radt = 30,
sf_sfclay_physics = 1,
sf_surface_physics = 1,
bl_pbl_physics = 1,
bldt = 0,
cu_physics = 2,
cudt = 0,
isfflx = 1,
ifsnow = 0,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 5,
mp_zero_out = 0,
sst_update = 1,
/
&fdda
/
&dynamics
diff_opt = 1,
km_opt = 4,
diff_6th_opt = 2,
diff_6th_factor = 0.12,
damp_opt = 3,
base_temp = 290.
zdamp = 15000.,
dampcoef = 0.2,
khdif = 0,
kvdif = 0,
non_hydrostatic = .true.,
moist_adv_opt = 0,
scalar_adv_opt = 0,
chem_adv_opt = 0,
tke_adv_opt = 0,
fft_filter_lat = 45.,
w_damping = 1,
/
&bdy_control
periodic_x = .true.,
symmetric_xs = .false.,
symmetric_xe = .false.,
open_xs = .false.,
open_xe = .false.,
periodic_y = .false.,
symmetric_ys = .false.,
symmetric_ye = .false.,
open_ys = .false.,
open_ye = .false.,
nested = .false.,
polar = .true. ,
/
&grib2
/
&namelist_quilt
nio_tasks_per_group = 0,
nio_groups = 1,
/
Xuan Tien
