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Carbon dioxide equivalent (CO2e)

CO2e (carbon dioxide equivalent) is a metric used to express the overall impact of different greenhouse gases on global warming in units of carbon dioxide equivalent (CO2). This term allows for the comparison and summation of emissions from various greenhouse gases based on their global warming potential (GWP).

Key points regarding CO2e include:

Global Warming Potential (GWP): Each greenhouse gas has a different global warming potential. For example, methane (CH4) and nitrous oxide (N2O) have a higher GWP than carbon dioxide (CO2), meaning they have a greater impact on global warming.
Conversion to CO2e: The amount of greenhouse gas emissions is converted to CO2 equivalent based on their GWP. For instance, if methane has a GWP of 25, it means that 1 ton of methane has the same impact on global warming as 25 tons of CO2.
Overall impact: Using CO2e, we can easily summarize the total impact of various greenhouse gases on global warming, which is useful for analyses and reports related to climate change.

The use of CO2e is crucial for assessing and comparing the climate impacts of different activities and policies, helping in the implementation of effective measures to reduce greenhouse gas emissions.