ESS200A
Prof. Jin-Yi Yu
What happened to CO2?
qChemical weather is the primary process to remove CO2 from the atmosphere.
èIn this process, CO2 dissolves in rainwater producing weak carbonic acid that reacts chemically with bedrock and produces carbonate compounds.
qThis biogeochemical process reduced CO2 in the atmosphere and locked carbon in rocks and mineral.
(from Earth’s Climate: Past and Future)