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The English version of our glossary is currently under construction and will be regularly updated.

Equivalent carbon dioxide (CO₂e) concentration

A unit of measurement used to compare the emissions of different greenhouse gases on the basis of their GWP (global warming potential).

Several greenhouse gases contribute to climate change, to varying degrees. The most important greenhouse gases are carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). But chlorofluorocarbons (CFCs) and other coolants amplify the greenhouse effect. In order to gauge and compare the climate effects of individual greenhouse gases, the Global Warming Potential (GWP) standard and CO2 equivalent (CO2e) are used. CO2 equivalent (also referred to as CO2e, carbon dioxide equivalent, or CO2eq) is used to compare the emissions of various greenhouse gases on the basis of their GWP. To do so, the amounts of other gases are converted into the equivalent amount of CO2.