Patterns

The patterns of climate change used by SCENGEN derive from a large number of GCM climate change experiments performed over the past decade, both equilibrium and transient (i.e., coupled O/AGCM experiments), and forced with both CO2 only and with aerosols only. All the patterns and variables available for selection consist of changes in mean monthly climate calculated from the respective GCM experiment and standardised to 1deg C of global warming. These change fields have usually been derived from between 10 and 30 years of simulated GCM climate. Precise definitions of the patterns used in SCENGEN are listed in the Info screens for each GCM experiment.