abnormal p25i, p25j, and soila

[hsianghelee]

Hi Everyone,
I noticed my WRF-Chem outputs on p25i, p25j, and soila at the first model layer have abnormal concentration pattern. This strip-type pattern only happens at the first layer. Other species do not have this issue. Does anyone know why cause this issue?

Here is dyanemic setup in namelist.input

&dynamics
hybrid_opt = 0,
rk_ord = 3,
w_damping = 1,
diff_opt = 2, 2, 2,
km_opt = 4, 4, 2,
damp_opt = 3,
base_temp = 290.
zdamp = 5000.,5000.,5000.,
dampcoef = 0.2,0.2,0.2,
khdif = 0,0,0,
kvdif = 0,0,0,
smdiv = 0.1,0.1,0.1,
emdiv = 0.01,0.01,0.01,
epssm = 0.5, 0.5, 0.5,
time_step_sound = 4,4,4,
h_mom_adv_order = 5,5,5,
v_mom_adv_order = 5,5,5,
h_sca_adv_order = 5,5,5,
v_sca_adv_order = 5,5,5,
non_hydrostatic = .true.,.true.,.true.,
/

Thanks,
Hsiang-He