Please post your questions about WACCM in one of the WACCM forums so that I will see them:https://bb.cgd.ucar.edu/forums/science-issues-0https://bb.cgd.ucar.edu/forums/software-and-run-time-issues-0For all of your chemical reactions, you should try to provide products that are balanced with the reactants so that you are conserving elements such as chlorine. If you are not concerned about the products of sulfur oxidation, such as SO2 and SO, you could leave them out. But you probably should be careful to conserve chlorine so that ozone is calculated accurately. For example, if you don't care about sulfur, you could put:CL + OCS -> CLOCLO + OCS -> CL OH + OCS -> CO + HIn fact, the products of the last reaction are SO2 + CO + H.