Strefler, Jessica; et al. (2018): Potential and costs of carbon dioxide removal by enhanced weathering of rocks
Strefler, Jessica; Amann, Thorben; Bauer, Nicolas; Kriegler, Elmar; Hartmann, Jens (2018): Potential and costs of carbon dioxide removal by enhanced weathering of rocks. In Environ. Res. Lett. DOI: 10.1088/1748-9326/aaa9c4.
"The chemical weathering of rocks currently absorbs about 1.1 Gt CO2 a-1 being mainly stored as bicarbonate in the ocean. An enhancement of this slow natural process could remove substantial amounts of CO2 from the atmosphere, aiming to offset some unavoidable anthropogenic emissions in order to comply with the Paris Agreement, while at same time it may decrease ocean acidification. We provide the first comprehensive assessment of economic costs, energy requirements, technical parameterization, and global and regional carbon removal potential. The crucial parameters defining this potential are the grain size and the weathering rates."