factually
Index/Topics/Suess effect

Suess effect

The Suess effect is a phenomenon where the progressive drop in atmospheric 13C/12C and 14C/12C since the Industrial Revolution is explained by large additions of 13C- and 14C-depleted fossil carbon into the atmosphere.

Fact-Checks

1 result
Jan 31, 2026
Most Viewed

How do isotopic signatures (carbon-13/carbon-12) show fossil fuel contributions to atmospheric CO2?

Isotopic ratios of carbon—principally the stable 13C/12C ratio expressed as δ13C—act as a fingerprint that reveals the addition of CO2 from fossil fuels because fossil carbon is consistently depleted ...