New research from the international Hotclim project, led by the Institute of Environmental Geosciences (IGE) and involving the Laboratory of Climate and Environmental Sciences (LSCE), has identified rapid fluctuations in atmospheric carbon dioxide concentrations over the past 500,000 years. These events, termed "CO2 jumps," represent significant natural variations in the climate record.
The study reveals that these historical jumps, while substantial, occurred at a rate approximately ten times slower than the current anthropogenic-driven increase in CO2 levels. This stark comparison underscores the unprecedented pace of modern carbon emissions compared to natural variability over the last half-million years.