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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-09 and was most recently seen on 2026-04-09.
The Suess effect is a change in the ratio of the atmospheric concentrations of heavy isotopes of carbon (13C and 14C) by the admixture of large amounts of fossil-fuel derived CO2, which contains no 14CO2 and is depleted in 13CO2 relative to CO2 in the atmosphere and carbon in the upper ocean and the terrestrial biosphere. It was discovered by and is named for the Austrian chemist Hans Suess, who noted the influence of this effect on the accuracy of radiocarbon dating. More recently, the Suess effect has been used in studies of climate change. The term originally referred only to dilution of atmospheric 14CO2 relative to 12CO2. The concept was later extended to dilution of 13CO2 and to other reservoirs of carbon such as the oceans and soils, again relative to 12C.
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