Creating a local emission inventory for WRF CHEM

[Rupa]

Hello, everyone. Thank you for allowing me to join this group.

I have been reading the WRF emissions guide, and I want  to be able to use my own emissions inventory in a 1km * 1 km domain.

I am confused as to the approach I should t  take to be able to feed my data into  WRF-CHEM:

a) Should I have emissions of species in the format like EDGAR, RETRO, and simply use prep chem src (Simple text files with latitude and longitude)?

b) Or the NEI emission inventory which I found to be rather complicated (lat-long in one folder and emissions in the other, and some other fortran files were in there too - downloaded from ftp server 'emissions_data_2005')? Also the emiss_v03. F doesn't seem t

o be applicable for domain sizes less than 12 km.

Has anyone ever tried inserting custom emissions data into WRF-CHEM? It would be great if you could guide me.  Thanks.

Sincerely,

Rupa.

[Gabriele Pfister]

Hello Rupa

you might want to check out the anthro_emis and EPA_anthro_emis tools we provide on our website whether you can adapt those for your needs: 

https://www2.acom.ucar.edu/wrf-chem/wrf-chem-tools-community

We cannot help you with emiss_v03. F or prep_chem_src since these tools have not been developed by our team. 

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

[Alice Burton]

Hi Rupa,

Did you find any solution for your question please?

kind regards,

[Gabriele Pfister]

Dear Alice

the anthro_emis and epa_anthro_emis tools on our website work with the provided emissions inputs and unfortunately we cannot help you with adapting them to other inventories. Please note that prep_chem_sources is not a tool that our group has developed and you will have to direct any questions to the MPAS-WRF User Forum. 

Gabi

[Rupa]

Hello . This forum was quite useful in recommending anthro emiss to me.

I did try making netcdf files in a similar format as the EDGAR files with lat, lon , and emissions (first i tried with random data) . And anthro emiss was able to generate wrfchemi files that wrf chem was able to read.

The only drawback tho i haven't been able to make the process faster.  Since it is a 1km * 1lm grid, dt should be small around 4-5 seconds.  And to run a long simulation would take time. Though this should be easier if you have a computer with many cores.

Let me know if this works.

Rupa.