The Dictionary of the Climate Debate (DCD)

Suess effect
Definition: A decrease in the total amount of atmostpheric carbon 13 and 14 that has been caused by fossil-fuel burning. It happens because fossil fuels are depleted in those isotopes.

This phenomenon is important because it proves that the recent increase in atmospheric CO2 is due to our fossil-fuel emissions.

1. It was named for the Austrian chemist Hans Suess who first noticed it.

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