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我用四层嵌套运算的结果用NCL画出来后出现局部点出现不正常的骤升骤降,是什么原因导致的呢?下图分别是温度图和速度图。
namelist.input文件如下所示:
&time_control
run_days = 0,
run_hours = 18,
run_minutes = 0,
run_seconds = 0,
start_year = 2014, 2014, 2014, 2014,
start_month = 08, 08, 08, 08,
start_day = 23, 23, 23, 23,
start_hour = 18, 18, 18, 18,
start_minute = 00, 00, 00, 00,
start_second = 00, 00, 00, 00,
end_year = 2014, 2014, 2014, 2014,
end_month = 08, 08, 08, 08,
end_day = 24, 24, 24, 24,
end_hour = 12, 12, 12, 12,
end_minute = 00, 00, 00, 00,
end_second = 00, 00, 00, 00,
interval_seconds = 21600,
input_from_file = .true., .true., .true., .true.,
history_interval = 60 , 60 , 60, 60,
frames_per_outfile = 100, 100, 100, 100,
restart = .false.,
restart_interval = 5000,
io_form_history = 2,
io_form_restart = 2,
io_form_input = 2,
io_form_boundary = 2,
debug_level = 0,
/
&domains
use_adaptive_time_step = .false.
step_to_output_time = .true.
target_cfl = 1.05,1.05,1.05,1.05,
max_step_increase_pct = 5,51,51,51,
starting_time_step = -1,-1,-1,-1,
max_time_step = -1,-1,-1,-1,
time_step = 12,
time_step_fract_num = 0,
time_step_fract_den = 1,
max_dom = 4,
e_we = 100,88,76,100,
e_sn = 100,88,76,100,
e_vert = 31, 31, 31, 31,
p_top_requested = 5000,
num_metgrid_levels = 27,
num_metgrid_soil_levels = 4,
dx = 9000, 3000, 1000, 333.333
dy = 9000, 3000, 1000, 333.333
grid_id = 1, 2, 3, 4,
parent_id = 1, 1, 2, 3,
i_parent_start = 1,40,15,33,
j_parent_start = 1,40,15,33,
parent_grid_ratio = 1, 3, 3, 3,
parent_time_step_ratio = 1, 3, 3, 3,
feedback = 0,
smooth_option = 0,
/
&physics
mp_physics = 6, 6, 6, 6,
ra_lw_physics = 4, 4, 4, 4,
ra_sw_physics = 4, 4, 4, 4,
radt = 10, 10, 10, 10,
sf_sfclay_physics = 1, 1, 1, 1,
sf_surface_physics = 2, 2, 2, 2,
bl_pbl_physics = 1, 1, 1, 1,
bldt = 0, 0, 0, 0,
cu_physics = 1, 0, 0, 0,
cudt = 0, 0, 0, 0,
isfflx = 1,
ifsnow = 0,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 4,
sf_urban_physics = 0, 0, 0, 0,
/
&fdda
/
&dynamics
w_damping = 1,
diff_opt = 1,1,1,1,
km_opt = 4,4,4,4,
diff_6th_opt = 2, 2, 2, 2,
diff_6th_factor = 0.12, 0.12, 0.12, 0.12,
base_temp = 290.,
damp_opt = 0,
zdamp = 5000., 5000., 5000., 5000.,
dampcoef = 0.2, 0.2, 0.2, 0.2,
khdif = 0, 0, 0, 0,
kvdif = 0, 0, 0, 0,
non_hydrostatic = .true., .true., .true., .true.,
moist_adv_opt = 1, 1, 1, 1,
scalar_adv_opt = 1, 1, 1, 1,
/
&bdy_control
spec_bdy_width = 5,
spec_zone = 1,
relax_zone = 4,
specified = .true., .false., .false., .false.,
nested = .false., .true., .true., .true.,
/
&grib2
/
&namelist_quilt
nio_tasks_per_group = 0,
nio_groups = 1,
/
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