Question about PM2.5 mapping in EPA_ANTHRO_EMIS

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sne...@gmail.com

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Aug 14, 2025, 3:02:21 PMAug 14
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Hi all,

I'm running EPA_ANTHRO_EMIS codes to convert my emissions for use with MOZART-MOSAIC (chem_opt 201) in WRF-Chem. I use the sample input file provided by NCAR-ACOM, which works with both GOCART and MOSAC aerosol schemes: https://www.acom.ucar.edu/wrf-chem/anthro_emis_MOZCART-T1_EPA2017_web.inp

However, when I read the WRF-Chem source code (https://github.com/wrf-model/WRF/blob/master/chem/module_mosaic_addemiss.F, line 478), it appears that MOSAIC needs "e_pm25i" and "e_pm25j" separately. But in the input file, there is one PM25 variable:
"emis_map(25) = 'PM_25(A)->all(PMOTHR)+cmv_c3_12(PMOTHR)+othpt(PMOTHR)+ptegu(PMOTHR)+cmv_c1c2_12(PMOTHR)+pt_oilgas(PMOTHR)+ptnonipm(PMOTHR)+rwc(PMOTHR)'"

Would someone please confirm how I should map PM2.5 emissions for use with the MOSAIC scheme? Do I need to split it to PM_25I and PM_25J?


Thank you!
Soroush
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