● Covered by 1 source · 1 reportMedium impact
New study links rock weathering to increased CO2 emissions during past warming events
Key points
- Erosion of organic carbon can emit CO2, countering traditional weathering effects.
- Study focuses on the Toarcian Ocean Anoxic Event from 183 million years ago.
- Massive volcanic eruptions led to significant climate changes, including species extinctions.
Study Overview
Earth scientists have recognized since the 1980s that rock weathering removes CO2 from the atmosphere, thus regulating climate.
Recent research, however, indicates that erosion may also result in CO2 emissions through the oxidation of organic carbon in sediments.
Historical Context
Doctor Madeleine Stow and colleagues studied the Toarcian Ocean Anoxic Event, a warming period caused by volcanic activity during the Jurassic era.
This event resulted from eruptions in South Africa and Antarctica, producing global temperature increases of 6° to 7°C, reshaping terrestrial and marine ecosystems.
Climate Implications
The study suggests that erosion of organic carbon during this period directly contributed to climate warming, which may have implications for understanding contemporary climate dynamics.
The potential parallels drawn between past and present climate change underscore a need for careful consideration of historical geological processes.
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Reporting from
A study in Nature Communications reveals that erosion of organic carbon can release CO2, amplifying climate change. This finding suggests parallels with current climate trends but emphasizes uncertainty about historical impacts on modern conditions.