Problem with using FINN in WRF-Chem

[s.e.ne...@gmail.com]

Hello everyone,

I would appreciate if someone can help me with the problem I faced in using FINN fire emissions in WRF-Chem. I'm new in using MOZCART chemical mechanism (chem_opt 112). The problem is that my wrfout file shows FIRESIZESs fields but values for pollutants such as BC, OC, or CO are zero.

I have successfully created wrffirechemi, wrfbiochemi, wrf_season_wes_usgs, and exo_coldens_d01. I also changed phot_opt to 3 that works with MOZCART.

No error received. It should also be noted that wrffirechemi files have values for ebu_in_* fields.

Please find my namelist and error log (first and last 200 lines) attached.

Does anyone know what might be wrong with my run?

Thank you in advance,

Best,

Soroush

[Stacy Walters]

Soroush,

It looks like you have not run mozbc to set the initial and boundary

conditions.

Stacy

[s.e.ne...@gmail.com]

Thank you for the reply Stacy.

That's right. I did not use IC and BC in my run in order to see concentrations without initial value. However, I also tried mozbc. As I expected, It has initial values but I see just dispersion of that initial value in next time steps and no emission is in next time steps. Is using chemical IC/BC a must for MOZCART mechanism?

I found out that ebu_in_oc has values in wrffirechemi file but it is zero in my wrfout file. Do you know what might be the reason?

Thank you.

Best,

Soroush 

[Stacy Walters]

Soroush,

It is not mandatory to use mozbc to set an initial condition for a non-restart

simulation.  However, many species will be be initialized to zero and thus

will lead potentially to a misleading simulation.

I'll look over your files and try to let know what is happening with your wrfout* file.

Stacy

[Karen Ballesteros Gonzalez]

Hi Soroush,

I know that it's more than a year since you faced this problem, but right now I'm facing the same problem.
I'm using MOZART_MOSAIC_4BIN_KPP (chem_opt: 201). Wrf output files show that apparently gases and SOA from fires are simulated ok. SOA shows a significant contribution, but there is not any contribution from BC and OC species.

Did you solve the problem?

I would appreciate if you can help me.

Thank you.

Karen Ballesteros

[Gabriele Pfister]

Karen

as stated in the User Guide, the MOZART-MOSAIC options are not setup to work with the online plumerise. You would have to adapt the code to work with the MOSAIC aerosols. 

Gabriele

--

================================
Gabriele Pfister, Deputy Director

Atmospheric Chemistry Observations & Modeling

National Center for Atmospheric Research

Email: pfi...@ucar.edu

Phone: +1 303 497 2915

Web: https://staff.ucar.edu/users/pfister