The Global Change Analysis Model (GCAM) is a global model that represents the behavior of, and interactions between five systems: the energy system, water, agriculture and land use, the economy, and the climate. It is used in a wide range of different applications from the exploration of fundamental questions about the complex dynamics between human and Earth systems to the those associated with response strategies to address important environmental questions. Global Change Assessment Model can encompass 32 world regions, 384 land subregions and 235 river basins. Analysis can be conducted for the time periods between 2015-2100 whereas earlier periods are used for model calibration.
water resources planning and management (water-food Nexus)
US DOE, US EPA, various other governments, historically some large multinational companies
IEA energy balances, FAO data, many others
energy demands, flows, tech deployments, prices, prices and supplies and demands of all agricultural and forest products, water demands and supplies for all agricultural, energy and household uses, 24 GHG and short-lived species