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WRF是指Weather Research and Forecasting Model,即天气预报模式,被誉为是次世代的中尺度天气预报模式。这个就不多说了,到处都有说明。
对于新手来说,最先当然是想知道怎么进行下去,尽快模拟出个案例出来。至于每一步为什么要这么做,还得熟悉后才会去深究。
首先,你当然得去下载源文件了,呵呵,一个WRFV3,一个WPS,地形数据GEOG,如果你打算用grads画图的话,你还得一个后处理软件ARWPOST, 我觉得grads更容易入门,也被大多数气象工作者熟知。然后你需要做的,就是参照置顶的培训PPT,WRF使用说明,如果你是完全自己从头开始安装,建议先看wrf模式学习---从linux安装开始。需要 特别说明的是,安装过程中有选择系统和编译器的时候,要根据你的实际选择,大多数时候不是手册上的选择。
你要是只是想先跑出个案例出来看看,你需要改的地方不多,贴出两个namelist,
先是namelsit.wps
&share
wrf_core = 'ARW',
max_dom = 4,
start_date = '2006-07-28_00:00:00', '2006-07-28_00:00:00', '2006-07-28_00:00:00','2006-07-28_00:00:00',
end_date = '2006-07-31_00:00:00', '2006-07-31_00:00:00', '2006-07-31_00:00:00','2006-07-31_00:00:00'
interval_seconds = 21600
io_form_geogrid = 2,
/
&geogrid
parent_id = 1, 1, 2, 3
parent_grid_ratio = 1, 3, 3, 3
i_parent_start = 1, 146, 132, 20
j_parent_start = 1, 29, 149, 20
e_we = 219, 199, 61, 61
e_sn = 146, 199, 61, 61
geog_data_res = '5m','2m','30s','30s'
dx = 9000,
dy = 9000,
map_proj = 'lambert',
ref_lat = 31.5,
ref_lon = 101.2,
truelat1 = 30.0,
truelat2 = 60.0,
stand_lon = 101.0,
geog_data_path = '../geog'
/
&ungrib
out_format = 'WPS',
prefix = 'FILE',
/
&metgrid
fg_name = 'FILE'
io_form_metgrid = 2,
/
&mod_levs
press_pa=201300,200100,100000,
95000, 90000 85000, 80000
75000, 70000 65000, 60000
55000, 50000 45000, 40000
35000, 30000 25000, 20000
15000, 10000 5000, 1000
/
你需要改的是开始结束时间和南北东西格点以及起始格点,中心经纬度,分辨率,地形数据路径等,参见手册。
然后是namelist.input,仅供参考。里面有个max_dom根据情况修改,其他和wps类似。这个例子是四重的,如果你只需要二重,则默认只会读取前两列,后两列无需删掉。
&time_control
run_days = 3,
run_hours = 0,
run_minutes = 0,
run_seconds = 0,
start_year = 2006, 2006, 2006, 2006,
start_month = 07, 07, 07, 07,
start_day = 28, 28, 28, 28,
start_hour = 00, 00, 00, 00,
start_minute = 00, 00, 00, 00,
start_second = 00, 00, 00, 00,
end_year = 2006, 2006, 2006, 2006,
end_month = 07, 07, 07, 07,
end_day = 31, 31, 31, 31,
end_hour = 00, 00, 00, 00,
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 = 1000, 1000, 1000, 1000,
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
time_step = 20,
time_step_fract_num = 0,
time_step_fract_den = 1,
max_dom = 4,
e_we = 219, 199, 61, 61,
e_sn = 146, 199, 61, 61,
e_vert = 43, 43, 43, 43,
eta_levels = 1.000, 0.999, 0.998, 0.996,
0.995, 0.993, 0.9922, 0.991,
0.989, 0.987, 0.985, 0.982,
0.978, 0.975, 0.965, 0.955,
0.945, 0.935, 0.924, 0.914,
0.904, 0.899, 0.848, 0.798,
0.747, 0.697, 0.646, 0.596,
0.545, 0.495, 0.444, 0.394,
0.343, 0.293, 0.242, 0.192,
0.141, 0.091, 0.061, 0.040,
0.020, 0.010, 0.000,
p_top_requested = 5000,
num_metgrid_levels = 27,
num_metgrid_soil_levels = 4,
dx = 9000, 3000, 1000, 333.3333
dy = 9000, 3000, 1000, 333.3333
grid_id = 1, 2, 3, 4,
parent_id = 0, 1, 2, 3,
i_parent_start = 1, 146, 132, 20
j_parent_start = 1, 29, 149, 20
parent_grid_ratio = 1, 3, 3, 3,
parent_time_step_ratio = 1, 3, 3, 3,
feedback = 1,
smooth_option = 0
/
&physics
mp_physics = 3, 3, 3, 3,
ra_lw_physics = 1, 1, 1, 1,
ra_sw_physics = 1, 1, 1, 1,
radt = 30, 30, 30, 30,
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, 1, 1, 1,
cudt = 5, 5, 5, 5,
isfflx = 1,
ifsnow = 0,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 4,
sf_urban_physics = 0, 0, 0, 0,
maxiens = 1,
maxens = 3,
maxens2 = 3,
maxens3 = 16,
ensdim = 144,
/
&fdda
/
&dynamics
w_damping = 0,
diff_opt = 1,
km_opt = 4,
diff_6th_opt = 0, 0, 0, 0,
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,
/
FNL数据下载地址http://dss.ucar.edu/cgi-bin/datasets/getWebList 需要注册再邮箱激活。
哦,好了,欢迎补充,不断更新…………
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