Fig. 3.

October averaged evolution of the TCO in Antarctica together with SBUV-MOD satellite data. REFC1SD is the state-of-the-art WACCM simulation including MAM SAD fields employed in ref. 29. This simulation considers a surface lower boundary condition of 1.2 pptv for CHBr₃ and CH₂Br₂ species. The REFC1SD no iodine run includes the complete VSLS bromine scheme, but no VSLS iodine, and the REFC1SD iodine run includes both VSLS bromine and iodine. Black thin line represents the total ozone column (TOZ) in 1980.