My CMAQ version uses the CB6R5_AE7 chemical mechanism, with ISAM version 5.5. The image shows the source apportionment species in the control file. How can I use them to derive PM2.5_TOT?
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Hello @bancheng ,
your image did not upload successfully, but if your question is about calculating PM25_TOT from ISAM output, the following threads should be helpful. The general approach is to use the combine utility and modify the mechanism-specific combine species definition files distributed with CMAQ to sum the aerosol species from the ISAM output files for the desired tags.