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Carbon Dioxide Equivalent (CO2e)

Carbon dioxide equivalent, or CO2e is a metric measure representing all greenhouse gases by converting them to the equivalent amount of CO2.

According to the Kyoto Protocol, there is not just one, but 6 greenhouse gases which all contribute to the greenhouse effect and thus to global warming: carbon dioxide (CO2), methane (CH4), nitrous oxide (laughing gas, N2O), hydrofluorocarbons (HFC/HFC), perfluorocarbons (PFC/PFC) and sulfur hexafluoride (SF6).

For easier understanding and because the greenhouse gases have a different effect on the climate, they are compared with the effect of one unit of CO2. So when we say your carbon footprint is, for example, 100 t CO2e, we are also accounting for the other climate relevant gases.

carbon dioxide equivalent
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