Hello! I tried to put the emissions inventory made by GAINS MODEL into CMAQ as input, which required species allocation of PM2.5 and VOC. Could I use Speciation Tool to obtain split_factor? (It should be noted that I did not use SMOKE to make the inventory. Using fortran scripts I wrote myself) Or do you have a better suggestion?
If you are looking for split factors and GSPRO files, I recommend using output from the S2S-Tool. Specifically, here:
As for your particular project: I used GAINS many years ago and recall there being < 10 sectors in total. PM and VOC profiles in SPECIATE, which is the database used to generate the split factors using S2S, better represent emissions at a more granular level (e.g., the SCC-level). The best option might be to pick a “representative” profile for each GAINS sector. This will likely lump many SCCs together, but there may not be a better option.
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Thank you very much for your answer! This is very helpful to me, and I would like to ask you: What is the difference between PM and PM_AE6 in SPECIATE’s export_profiles?
PM profiles feature all species reported by a test. PM_AE6 profiles are post-processed into the format needed for the AE6 module in CMAQ. This is done using the “PM Protocol.” See the appendix of the S2S documentation:
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