How is Global Warming Potential (GWP) expressed?

Global Warming Potential (GWP) is a measure that expresses the heat-trapping ability of greenhouse gases in relation to carbon dioxide (CO₂). It reflects how much a given mass of a greenhouse gas contributes to global warming over a specified time period, typically 100 years, compared to the same mass of CO₂.

The GWP is quantified in terms of kilograms of CO₂ equivalent per functional unit, meaning it allows for the comparison of the impact of different greenhouse gases on global warming. For example, if a gas has a GWP of 100, it means that its impact on warming the planet is 100 times greater than that of CO₂ over the same timeframe.

This measurement provides a clear and consistent way of discussing the potential impact of different gases, contributing significantly to climate change discussions and policy-making. Understanding GWP in this way allows for assessments of mitigation strategies by comparing emissions reductions across various sectors and gases effectively.