How does CMAQ deal with S(IV)-S(VI) transformation and sulfuric chemistry?

CMAQ
1

Dear all,

I am working on some applications related to S(IV)-S(VI) transformation and sulfuric chemistry. I checked the codes in CMAQ Cloud module (acm_ae6) and could find the description of the processes. I am wondering that except the cloud module, whether S(IV)-S(VI) transformation is also described in Aerosol module or elsewhere in CMAQ?

Thank you very much for your help!

Best wishes,
Lingyun

2

Hi Lingyun,

Great question! S(IV) to S(VI) conversion in the latest CMAQ version (v5.5) only includes aqueous reactions in the cloud module. We do plan to implement aerosol-phase S(IV) to S(VI) in CRACMM3 in CMAQv6. Stay tuned!

-Sara

3

Hi Sara,

Thank you very much for your reply. I will keep an eye on it! Hope your work goes well!

All the best,
Lingyun