Problem running real.exe with FINN, RETRO, and GOCART background data

[stormch...@gmail.com]

Good afternoon,

My name is Stefan, and I am a grad student at U. Wyoming.  I am running WRF-Chem to study midlatitude-to-arctic transport of BC.

I have generated my:

wrfchemi_d01 anthropogenic emissions file (RETRO) using prep-chew-sources,

wrfchemi_d01_gocart_bg_d01 file using the same software for DMS dat,

and wrffirechemi_d01_<date> fire emissions files (FINN) using fire_emiss.

I am running this simulation over a two week period during the summer months.  I wish the fire data to update at hourly intervals, while keeping the anthropogenic emissions the same throughout the simulation, as RETRO only provides monthly anthropogenic emissions.

When I run real.exe (chem_opt = 2), I get the following error (rss.error.log attached):

"READING EMISSIONS DATA OPT 3

d01 2015-06-20_00:00:00  DEBUG wrf_timetoa():  returning with str = [2015-06-20_00:00:00]

 mediation_integrate: med_read_wrf_chem_fireemissions: Open file wrffirechemi_d01

d01 2015-06-20_00:00:00 module_io.F: in wrf_open_for_read

d01 2015-06-20_00:00:00  NetCDF error: No such file or directory

d01 2015-06-20_00:00:00  NetCDF error in wrf_io.F90, line        1059

-------------- FATAL CALLED ---------------

FATAL CALLED FROM FILE:  mediation_integrate.b  LINE:    2808

 med_read_wrf_chem_fireemissions: error opening wrffirechemi_d01

-------------------------------------------",

even though I specify the read option to be date and time specific (at least I thought I did).  I have a feeling I am doing something silly...

I have attached a copy of the namelist for your viewing.  I must have changed the namelist 20 times based on online guidance, but to no avail.

I noted that my chemistry option does not include MOZART, and I generated the firechemis using SAPRC99 data.

Thank you so much in advance for your assistance! :)

Warm wishes,

-Stefan

[Gabriele Pfister]

Stefan 

there are various comments to make. First, we unfortunately can only provide support on our developed tools and WRF-Chem implementations as listed on our website (including e.g. the MOZART chemistry options, lightning emissions or TUV options). Hence I cannot comment whether your chosen settings are compatible with using hourly fire emission files. 

 

As mentioned in the README, FINN provides the total fire emission strength. The WRF-Chem plumerise routine, however, assumes the input emissions to only contain the smoldering fraction. For the MOZART chemistry options we have added the scale_fire_emiss namelist variable, which controls whether or not the total emission strength is split into a "smoldering" and a "flaming" part within the plumerise module. When using FINN emissions, this namelist variable has to be set to .true. You would have to look at the WRF-Chem version you are using if this option has also been implemented for chem_opt = 2, I do not think this is the case. 

See the README that comes with the fire_emis  tool and the MOZCART User's Guide (https://www2.acom.ucar.edu/wrf-chem) for more information. 

You will have to create the fire emissions with the speciation of your chemistry option. That is you have to map the speciations that FINN is providing (i.e. MOZART, GEOS-CHEM or SAPRC) to the chem_opt of your choice, in your case RADM2/MADE-SORGAM. Either way missing or incorrect speciation would not cause the model to halt but you would get warnings in your log file about missing species. 

​

I did notice you are having a general mismatch between your chemistry options and your emissions input by using chem_opt=2 (RADM2 with MADE-SORGAM) and setting emiss_opt=5 (RACM-GOCART) and by using biomass_burn_opt = 3 (MOZART chemistry). Your settings for chemistry and emissions need to refer to the same chemical scheme. 

I hope this helps some,

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