Problem with chem_opt=109 and wetscav_onoff= 1 in WRF-chem 3.9.1

[Naser]

Hello,

As I mentioned earlier, when I use chem_opt = 109 and set wetscav_onoff = 1, the WET_DEP_FLUX values are zero.
I found the part of the code responsible for calculating WET_DEP_FLUX, but I still don’t understand why this array is zero (wdflx=0).

I would appreciate any help to solve this issue. Thank you!