Global warming potential (GWP)

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An index representing the combined effect of the differing times that greenhouse gases remain in the atmosphere and their relative effectiveness in absorbing outgoing infrared radiation.

Specifically: A measure of the total energy that a gas absorbs over a particular period of time (usually 100 years), compared to carbon dioxide.

GWP is an indicator that allows comparative analysis of different gases and their impacts on Global Warming. The larger the GWP, the more a specific gas warms the earth compared with carbon dioxide over time.

Links

EPA: Understanding Global Warming Potentials