Current models of the global carbon cycle lack natural mechanisms to explain known large,
transient shifts in past records of the stable carbon-isotope ratio (δ13C) of carbon reservoirs …

Abstract CHANGES in the isotope content of the large marine carbon reservoir can force
shifts in that of the smaller carbon pools in the atmosphere and on land. The carbon isotope …

The start of the Palaeocene/Eocene thermal maximum—a period of exceptional global
warming about 55 million years ago—is marked by a prominent negative carbon isotope …

The most conspicuous feature of the record of past climate contained in polar ice is the rapid
warming which occurs after long intervals of gradual cooling. During the last four transitions …

Global climate and the concentration of atmospheric carbon dioxide (CO2) are correlated
over recent glacial cycles,. The combination of processes responsible for a rise in …

THE various reservoirs of the global carbon cycle, with their very different residence times,
are linked by a complex and evolving system of exchanges for which natural radiocarbon is …

Abstract The Palaeocene/Eocene thermal maximum represents a period of rapid, extreme
global warming∼ 55 million years ago, superimposed on an already warm world,,. This …

Reconstructions of atmospheric CO2 concentrations based on Antarctic ice cores, reveal
significant changes during the Holocene epoch, but the processes responsible for these …

Abstract Knowledge of the evolution of atmospheric carbon dioxide concentrations
throughout the Earth's history is important for a reconstruction of the links between climate …

THE stable-carbon isotopic composition of marine organic material has varied significantly
over geological time, and reflects significant excursions in the isotopic fractionation …