PROBLEM WITH TEMPERATURE FORECAST - BRAZIL

Any problems/questions that might not fall into the other topics in this category.

PROBLEM WITH TEMPERATURE FORECAST - BRAZIL

Postby camilath » Tue Jul 05, 2016 9:17 am

Hi all,

I'm running WRF model (V3.7.1) everyday with GFS05 input for Brazil with 15km of dx-dy. I don't know why, but the model overestimate 2m temperature of S/E litoral. I'll put 3 figures here (observation, WRF output when started 00Z04jul2016 and 0Z05jul2016) with a part of namelist.input.

If anyone had this problem or if you know what I have to do to solve this, please, help me! I changed cu_physics because the default param overestimate the rain. The radiation was changed too. I tried change BL physics for MYJ without success..


Thanks for any comment!

Images: https://drive.google.com/file/d/0B_y2MY ... sp=sharing

namelist.input:

&domains
eta_levels = 1.000, 0.994, 0.988, 0.982, 0.976,
0.9701, 0.9636, 0.9564, 0.9483, 0.9389,
0.9281, 0.9153, 0.9001, 0.882, 0.8604,
0.8348, 0.8047, 0.77, 0.7306, 0.6867,
0.639, 0.5883, 0.5355, 0.4818, 0.428,
0.375, 0.3236, 0.2742, 0.2272, 0.1829,
0.1414, 0.1026, 0.0667, 0.0334, 0.000
time_step = 60,
time_step_fract_num = 0,
time_step_fract_den = 1,
max_dom = 2,
e_we = 465, 103, 94,
e_sn = 420, 103, 91,
e_vert = 35, 35, 30,
p_top_requested = 5000,
num_metgrid_levels = 22,
num_metgrid_soil_levels = 4,
dx = 15000, 5000, 3333.33,
dy = 15000, 5000, 3333.33,
grid_id = 1, 2, 3,
parent_id = 0, 1, 2,
i_parent_start = 1, 203, 30,
j_parent_start = 1, 122, 30,
parent_grid_ratio = 1, 3, 3,
parent_time_step_ratio = 1, 3, 3,
feedback = 1,
smooth_option = 0
sfcp_to_sfcp = .true.
/

&physics
mp_physics = 3, 3, 3,
ra_lw_physics = 5, 5, 1,
ra_sw_physics = 5, 5, 1,
radt = 15, 15, 30,
sf_sfclay_physics = 1, 1, 1,
sf_surface_physics = 2, 2, 2,
bl_pbl_physics = 1, 1, 1,
bldt = 0, 0, 0,
cu_physics = 2, 0, 0,
cudt = 5, 5, 5,
isfflx = 1,
ifsnow = 1,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 4,
sf_urban_physics = 0, 0, 0,
sst_update = 0,
/
camilath
 
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Joined: Mon Oct 31, 2011 10:43 am

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