Climate Impact Assessment

IAMPACT relates temperature changes and economic growth to project how climate change will affect the global economy. The tool incorporates multiple research approaches, including:

• Empirical models showing how higher temperatures reduce economic productivity
• Different impact estimates for developed versus developing countries (since poorer nations are more vulnerable)
• Thousands of simulations to account for scientific uncertainty

Economic Cost-Benefit Analysis

The program calculates the net benefits of climate action by comparing:

• Benefits: Economic damages avoided by limiting temperature rise
• Costs: Expenses of implementing climate policies (renewable energy, carbon pricing, etc.)

Key Insights

IAMPACT's analyses typically show that:

• The economic benefits of climate action often outweigh the costs
• Developing countries face higher climate damages but can also receive larger benefits from mitigation support
• Acting now is generally more cost-effective than delaying action
• Uncertainty exists, but climate action remains economically sound across most scenarios

IAMPACT represents a collaborative effort to provide transparent, reproducible analysis of  climate economics using the latest scientific research and computational methods.