ESS220
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 process reduced CO2 in the atmosphere and locked carbon
in rocks and mineral.
(from Earth’s Climate:
Past and Future)