Close mass balance of long-term carbon fluxes from ice-core CO2 and ocean chemistry records
Submitted by susan on Thu, 2008-05-01 10:08
On geological timescales, carbon dioxide enters the atmosphere through volcanism and organic matter oxidation and is removed through mineral weathering and carbonate burial. An analysis of ice-core CO2 records and marine carbonate chemistry indicates a tight coupling between these processes during the past 610,000 years, which suggests that a weathering feedback driven by atmospheric CO2 leads to a mass balance between CO2 sources and sinks on long timescales.
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Publication Date:
01/05/2008