Climate Jargon Buster
Term of the week
This is the abbreviation of Million Tonnes of carbon dioxide equivalent. 1 tonne is equal to 1,000 kilograms.
This unit allows us to compare the potential warming impact of an emission of:
- one greenhouse gas (like nitrous oxide)
- an emission of the same amount of carbon dioxide.
Example: The global warming potential for nitrous oxide over 100 years is 298. This means that:
- emissions of one million tonnes of nitrous oxide
is equivalent to
- emissions of 298 million tonnes of carbon dioxide (298 Mt CO2eq).
Example: Carbon dioxide can be captured and stored by forests and oceans.
‘Carbon emissions’ is sometimes used as a shorthand to describe all greenhouse gases.
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