The Global Change Assessment Model, or GCAM, is a state-of-the-art integrated assessment model that has been developed at PNNL for more than 25 years and now serves as a community model. GCAM is a global partial equilibrium model that simulates the interactions among the economy, the global energy system, and agriculture and land use in 14 worldwide regions under various demographic and technological assumptions.
Regional Integrated Assessment
To support regional-scale system integration across PRIMA, a sub-regional version of GCAM has been developed, called GCAM-USA. GCAM-USA retains the global capabilities of GCAM for regions outside of the United States but includes increased domestic resolution, including:
- Climate-dependent building energy demand at the state level
- Electricity generation at the state level
- Crop yields and land use change at the agro-ecological zone scale
- Water supply and demand at the major watershed scale.
POC: Leon Clarke