MAGICC allows to investigate future climate change and its uncertainties at both the global-mean and regional levels. MAGICC is coupled with SCENGEN (a Regional Climate Scenario Generator). MAGICC calculates the estimates at the global-mean level. SCENGEN uses the calculations to produce spatially-detailed information on future changes in temperature, precipitation, mean sea-level pressure, changes in their variability, as well as a range of other statistics.
The model is mainly used to:
compare the global-mean temperature and sea-level implications of any two scenarios;
determine the sensitivity of the temperature and sea-level results for any chosen emissions scenario to changes in model parameters (and uncertainties relating to model parameters).
These data sets are housed at the Program for Climate Model Development and Intercomparison (PCMDI) at the US DOE Lawrence Livermore National Laboratory (LLNL). This data set is now referred to as the CMIP3 data base.
The software allows the user to determine changes in greenhouse-gas concentrations, global-mean surface air temperature, and sea level resulting from anthropogenic emissions of:
CO, NOx, VOCs
various halocarbons that are not controlled by the Montreal Protocol (HCFCs, HFCs, PFCs and SF6) - Montreal gas emissions changes are hard-wired into the code
sulfur dioxide (SO2)