4.4 Comparing climate projections by SimClimat and climate models

SimClimat has been adjusted to realistically represent the present climate and last glacial maximum, and to provide climate projections similar to those of climate models participating in CMIP (section 2.1). Consequently, for $CO_{2}$ emissions that allow SimClimat to simulate $CO_{2}$ concentration evolutions similar to those of the IPCC, projections in terms of temperature and sea level rise are similar (figure 16).

Figure 16: Comparison of projections produced by SimClimat and by models participating in CMIP. The left column presents the results shown in the 5th IPCC report ([IPCC, 2013]). The right column shows screenshots of SimClimat. The curves show the evolution of the $CO_{2}$ concentration according to optimistic and pessimistic scenarios (above), the global temperature of the Earth (in the middle) and the sea level (at the bottom). For SimClimat, the optimistic and pessimistic scenarios were run with 1 GtC/year and 22 GtC/year anthropogenic emissions.