The Canberra-Hamburg Integrated Model of Population (CHIMP) is a demographic model to beused together with an economic model for long-term growth projections. CHIMP iscohort-based, and included fertility, mortality and migration. Parameters aredriven by per capita income, technological change, and projections of pasttrends. CHIMP runs in time-steps of five years for sixteen world regions.

The modelcan be downloaded here. You will need a C++ compiler torun it, and knowledge of that language to change the model.

The model documentation can be found here.

Fisher, B.S., G. Jakeman, H.M. Pant, M. Schwoon and R.S.J.Tol (forthcoming), ‘CHIMP: A SimplePopulation Model for Use in Integrated Assessment of Global EnvironmentalChange’, Integrated Assessment Journal.