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Wind too large at Tropical region

PostPosted: Fri Oct 19, 2018 9:24 am
by solar_ftir
Hi everyone,

I made a nesting WRF-CHEM run around Reunion Island (lat=-21, lon=55; Indian Ocean) for 7 days. The WRF output U and V are very much larger than the surface measurements (the u and v in the WRF simulation is about 10, while the real measurements are close to 2) :? . I have checked that in the met_em_d0* file, the wind is very close to the real measurements (It means the ECMWF file is OK). But after run ./real.exe, the wind in the wrfinput_d0* is much larger than the real measurements.

Does anyone know where is the problem? if there is specific physic settings for the tropic region? Especially for the wind?

Following is my namelist
-------
&physics
mp_physics = 10, 10, 10,
ra_lw_physics = 4, 4, 4,
ra_sw_physics = 4, 4, 4,
radt = 30, 30, 30,
sf_sfclay_physics = 1, 1, 1,
sf_surface_physics = 2, 2, 2,
bl_pbl_physics = 1, 1, 1,
bldt = 0, 0, 0,
cu_diag = 1, 1, 1,
cu_physics = 5, 5, 5,
cudt = 5, 5, 5,
isfflx = 1,
ifsnow = 0,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 4,
sf_urban_physics = 0, 0, 0,
maxiens = 1,
maxens = 3,
maxens2 = 3,
maxens3 = 16,
ensdim = 144,
/

Thanks in advance for your help!
Minqiang