Exploring CO2 Sequestration via Limestone Weathering on Ships
By
PaulHoule
An everything bagel for the brain. Substantive, layered, well-seasoned.
Summary
The article discusses the potential of CO2 sequestration through accelerated weathering of limestone on ships, highlighting the role of calcium carbonate dissolution in the marine carbon cycle and its impact on atmospheric CO2 levels.
Key quotes
· 3 pulledThe dissolution of calcium carbonate in the ocean is a fundamental part of the marine carbon cycle and is key to the role that the ocean plays in buffering atmospheric CO2 and climate.
The surface ocean takes in CO2 through air-sea exchange and becomes more acidic when partial pressure of CO2 (Pco2) in the atmosphere is high.
Once the overturning circulation carries this surface water to the deep, the acidity is neutralized by enhanced CaCO3 dissolution at the seafloor that ultimately drives ocean pH up and atmospheric CO2 down to a new steady state.
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