How does the IPCC assess the impact of various greenhouse gas scenarios?

The Intergovernmental Panel on Climate Change (IPCC) uses representative concentration pathways (RCPs) to assess the impact of various greenhouse gas scenarios. RCPs are atmospheric concentration trajectories that outline different scenarios for greenhouse gas emissions and associated radiative forcing over time. Each pathway represents a specific trajectory of emissions and helps model potential climate outcomes based on varying levels of human activity and mitigation efforts.

Unlike purely statistical analyses without data or theoretical predictions that do not incorporate empirical evidence, RCPs are built upon a foundation of scientific data and represent realistic scenarios based on socioeconomic trends, technological advancements, and policy changes. By utilizing these pathways, the IPCC can evaluate and project future climate scenarios, allowing for more informed discussions and actions regarding climate change mitigation and adaptation strategies.