Oslo CTM3 Chemistry : Sulfur
The sulfur chemistry
The sulfur scheme is calculated using the full tropospheric chemistry
(Berglen et al., 2004). It can also be run with stratospheric chemistry
included, but chemical reactions are so far only treated in the
troposphere.
It is primarily a chemical scheme, but sulfate is assumed to be in aerosol phase, i.e. comprising H2SO4 and the ions SO4-- and HSO4-.
The additional species are listed below, whether they are transported (T=Y) or not (T=N), and also the chemical domain of interest (C): T is troposphere only, S is stratosphere only and B is both. Wet deposition is listed as WD. It was planned to also include CS2 and OCS (carbonyl sulfide), but they are not yet included.
| Nr | Component | T/C | WD | Remarks |
| 71 | DMS | Y/T | Y | dimethyl sulphide, (CH3)2S |
| 72 | SO2 | Y/T | Y | |
| 73 | SO4 | Y/T | Y | Includes SO4--/HSO4-/H2SO4 |
| 74 | H2S | Y/T | N | |
| 75 | MSA | Y/T | Y | Methanesulfonic acid, CH3SO3H |
Berglen, T. F., T. K. Berntsen, I. S. A. Isaksen, and J. K. Sundet: A global model of the coupled sulfur/oxidant chemistry in the troposphere: The sulfur cycle, J. Geophys. Res., 109(D19310), doi:10.1029/2003JD003948, 2004.