CMAQ chemical species

I would like to inquire about the information about the CMAQ chemical species UNR, what substance it represents, and what its relative atomic mass is. I have found information such as PAR PMC, but I have not found information about this UNR.

UNR is relatively “unreactive.” Currently, UNR in CB6r3 corresponds to OH rate constants, kOH, < 1.1e-12 cm3/molec-s (see line 141 of S2S-Tool/mechanism_mappers/ at main · USEPA/S2S-Tool · GitHub).

1 Like

Thank you very much for your answer. Your information is very useful.