How is plumerise module incorporated in WRF-Chem

[Krishna Kedia]

Hi all,

I had a question regarding implementation of plumerise module in the WRF-Chem. 

Firstly, is the plumerise module incorporated in the WRF-Chem code through the module_chem_plumerise_scalar.F and module_plumerise1.F scripts? (These are the only 2 scripts I could find related to plumerise). And do I just need to set plumerise_frq option in namelist.input and the model will automatically invoke plumerise calculations on grid cells containing fire detections obtained through the wrffire_d01* files?

If the answer is yes, then how do I save or calculate the plume injection heights simulated by the plumerise module?

If no, then is there a guide to setup the plumerise module in the WRF-Chem simulation?

Any suggestions on this will be greatly appreciated. 

Thank you
Krishna Kedia

[Gabriele Pfister]

Hello Krishna

yes, these are the two modules for the online plumerise. You will need
to set plumerise_frq but also biomass_burn_opt (see the WRF-Chem User
Guide).
If you use FINN and fire_emiss then you also will need to set
scale_fire_emiss since the FINN emissions include both smoldering and
flaming emissions (see the fire_emiss README for more information).

You can look at the MOZART/GOCART namelist example in our Best
Practices document (https://www2.acom.ucar.edu/wrf-chem)

Gabi

--
================================
Gabriele Pfister
Atmospheric Chemistry Observations & Modeling (ACOM) Lab
NSF National Center for Atmospheric Research (NCAR)
Email: pfi...@ucar.edu
Work Phone: +1 303 497 2915
Web: https://staff.ucar.edu/users/pfister

[Krishna Kedia]

Hi Gabi,

Thanks for the inputs. Could you please also comment on how to obtain the plume injection heights from the model? 

As I understand from the code, ztopmax variable contains the maximum plume injection height for a given column. Is there a way to store this in the wrfout files?

Thanks
Krishna 

[Gabriele Pfister]

Hi

you will have to output the variables ebu_{species}. These contain the
vertically distributed fire emissions.

Gabi