Emissions scenarios -- should be straightforward; Hector already supports these practically out of the box (possibly with some unit conversions).
Concentration scenarios -- More complex. CO2 concentration constraint is supported, but none of the other species. Options are (1) allow components to take concentrations, or (2) "back-calculate" emissions from concentrations.
Radiative forcings -- Same as concentration scenarios. Either modify Hector to take these, or solve for them.
Emissions scenarios -- should be straightforward; Hector already supports these practically out of the box (possibly with some unit conversions).
Concentration scenarios -- More complex. CO2 concentration constraint is supported, but none of the other species. Options are (1) allow components to take concentrations, or (2) "back-calculate" emissions from concentrations.
Radiative forcings -- Same as concentration scenarios. Either modify Hector to take these, or solve for them.
Convert Hector outputs to submission format.
More info on everything at https://www.rcmip.org/.