I am trying to run CMAQ-5.4 for the year of 2021 for the 12US1 domain and i used the CMAQ ready inputs ( AWS S3 Explorer), which are for the mechanisms (cb6r5_ae7_aq). But i want to include Hg aqueous reactions which is in the acm_ae6_mp mechanism. The model can be compiled but when i tried to run the model, i noticed acm_ae6_mp does not work with cb6r5_ae7_aq.
( *** ERROR ABORT in subroutine AQCHEM on PE 007
This version of AQCHEM requires an AE6 chemical mechanism
PM3EXIT: DTBUF 0:00:00 July 1, 2021
Date and time 0:00:00 July 1, 2021 (2021182:000000))
I wonder if there is a acm_ae7_mp somewhere, if not, can i directly copy the hg_aqchem_data.F file to the acm_ae7 directory and change the other files accordingly?
The main CMAQ developers have not created a version of acm_ae7_mp.
Developing acm_ae7_mp has to make other code changes besides copying hg_aqchem_data.F. The task has to modify several files under acm_ae7 because the files differ between acm_ae7 and acm_ae6_mp. These files are rescld.F, concld_acm.F, cldproc.F, aq_map.F, AQ_DATA.F, and aqchem.F. Needed changes appear small for the first four of the files listed because most differences do not deal with mercury cloud chemistry. AQ_DATA.F and aqchem.F require larger changes that do deal with parameters and statement regarding mercury chemistry.
The above work may be more that you are will to accomplish.