Weird result of run mozbc

[Naser Mohammadzadeh]

I ran the WRF-chem-RACM/MADE-VBS (v3.9.1) model with MOZBC for three consecutive days. Each day, I followed these steps ( run_days=1  in namelist.input ):

1. **Day 1 (2020010100~2020010200):**
   - Ran "real.exe."
   - Ran "mozbc."

2. **Day 2 (2020010200~2020010300):**
   - Ran "real.exe."
   - Ran "mozbc."

3. **Day 3 (2020010300~2020010400):**
   - Ran "real.exe."
   - Ran "mozbc."

However, when I analyzed the time series, I noticed an unusual result in the figure I've attached. In this figure:

- The green line represents the observed data.
- The white line represents the model simulation with "mozbc."
- The yellow line represents the model simulation without "mozbc."

My specific concern is the decrease in the model simulation at 00 hours, and I'm seeking assistance in understanding and resolving this issue.

This is my mozbc content: 

&control

do_bc     = .true.
do_ic     = .true.
domain    = 1
dir_wrf = './'
dir_moz = '/data/unist/naser/nessesary_files_to_RUN/mozbc/'
fn_moz  = './camchem/JAN2020camchem.nc'
moz_var_suffix = ''
def_missing_var = .true.

spc_map = 'co -> CO',
          'o3 -> O3',
          'so2 -> SO2',
          'no -> NO',
          'no2 -> NO2',
          'h2o2 -> H2O2',
          'no3 -> NO3',
          'n2o5 -> N2O5',
          'hno3 -> HNO3',
          'nh3 -> NH3',
          'hcho -> CH2O',
          'pan -> PAN',
          'tpan -> MPAN',
          'tol -> .75*TOLUENE',
          'xyl -> .25*TOLUENE',
          'hno4 -> HO2NO2',
          'eth -> C2H6',
          'hc3 -> C3H8',
          'hc5 -> BIGALK',
          'iso -> ISOP',
          'macr -> MACR',
!          'ald -> GLYALD+CH3CHO',
          'ket -> CH3COCH3',
          'gly -> GLYOXAL',
          'mgly -> CH3COCHO',
          'hket -> HYAC',
          'csl -> CRESOL',
          'ete -> C2H4',
          'olt -> C3H6+MVK+0.5*BIGENE',
          'oli -> .5*BIGENE',
!          'paa -> CH3COOOH',
!          'onit -> ONIT+ONITR',
          'ora2 -> CH3COOH',
!          'op1 -> CH3OOH',
!          'op2 -> C2H5OOH+ALKOOH+MEKOOH',
          'ch4 -> CH4',
!          'sulf -> SO4;0.30173e6'
/

I hope you understand my question. Thanks

[Héctor Jorquera González]

Hi Naser

You should build the BC for the whole modeling period (three days I guess) in the coarse domain 1. 

Regards

Héctor