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Atmospheric CO2 sink; silicate weathering or carbonate weathering?


, : Atmospheric CO2 sink; silicate weathering or carbonate weathering?. Applied Geochemistry 26.Suppl.

It is widely accepted that chemical weathering of Ca-silicate rocks could potentially control long-term climate change by providing feedback interaction with atmospheric CO2 drawdown by means of precipitation of carbonate, and that in contrast weathering of carbonate rocks has not an equivalent impact because all of the CO2 consumed in the weathering process is returned to the atmosphere by the comparatively rapid precipitation of carbonates in the oceans. Here, it is shown that the rapid kinetics of carbonate dissolution and the importance of small amounts of carbonate minerals in controlling the dissolved inorganic C (DIC) of silicate watersheds, coupled with aquatic photosynthetic uptake of the weathering-related DIC and burial of some of the resulting organic C, suggest that the atmospheric CO2 sink from carbonate weathering may previously have been underestimated by a factor of about 3, amounting to 0.477 Pg C/a. This indicates that the contribution of silicate weathering to the atmospheric CO2 sink may be only 6%, while the other 94% is by carbonate weathering. Therefore, the atmospheric CO2 sink by carbonate weathering might be significant in controlling both the short-term and long-term climate changes. This questions the traditional point of view that only chemical weathering of Ca-silicate rocks potentially controls long-term climate change.

US$19.90

DOI: 10.1016/j.apgeochem.2011.03.085


Other references

Yadav, J.S.; Reddy, B.V.S.; Swamy, T., 2003: Bi(OTf)3-catalyzed conjugate addition of indoles to p-quinones: A facile synthesis of 3-indolyl quinones. A wide range of indoles undergo conjugate addition to p-benzoquinones in the presence of 2 mol% bismuth triflate under mild conditions to afford the corresponding 3-indolyl quinones in excellent yields with high selectivity.

Bauch, J., 1982: Biological studies of wood from diseased pine, fir, and spruce trees Pinus, Abies, Picea.1. Stirbt der Wald?: energiepolitische Voraussetzungen und Konsequenzen HG Hatzfeldt Hrsg: 4

Wraith, D.C.; McDevitt, H.O.; Steinman, L.; Acha-Orbea, H., 1989: T cell recognition as the target for immune intervention in autoimmune disease. Cell 57(5): 709-715

Yu, L.; Jin, W.; Wang, J-xin.; Zhang, X.; Chen, M-meng.; Zhu, Z-hai.; Lee, H.; Lee, M.; Zhang, Y-ping., 2010: Characterization of TRPC2, an essential genetic component of VNS chemoreception, provides insights into the evolution of pheromonal olfaction in secondary-adapted marine mammals. Pheromones are chemical cues released and sensed by individuals of the same species, which are of major importance in regulating reproductive and social behaviors of mammals. Generally, they are detected by the vomeronasal system (VNS). Here, we f...

Ottolenghi, P., 1967: The uptake of bovine serum albumin by a strain of Saccharomyces and its physiopathological consequences. A yeast strain investigated has been found to be capable of taking up bovine serum albumin from the medium, the cells dying as a consequence. Factors of importance for the uptake include the pH (low enough for the albumin to have a net positive ch...

Kaukoranta, P.; Lepojarvi, M.; Kiviluoma, K.; Ylitalo, K.; Peuhkurinen, K., 1997: Metabolic changes in right and left ventricular myocardium during mild hypothermic antegrade versus retrograde blood cardioplegia and early reperfusion. European Heart Journal 18(ABSTR SUPPL ): 659

Oria, R.; Otero, J.; González, L.; Botaya, L.; Carmona, M.; Puig-Vidal, M., 2013: Finite element analysis of electrically excited quartz tuning fork devices. Quartz Tuning Fork (QTF)-based Scanning Probe Microscopy (SPM) is an important field of research. A suitable model for the QTF is important to obtain quantitative measurements with these devices. Analytical models have the limitation of being base...

Sarker, M.H.; Fraser, P.A., 2000: Particulate guanylate cyclase is required for acute permeability response to bradykinin in rat brain venules. FASEB Journal 14(4): A24, March 15

Du, L.; Ma, C.; Jiang, S., 2014: Antibodies induced by receptor-binding domain in spike protein of SARS-CoV do not cross-neutralize the novel human coronavirus hCoV-EMC. Journal of Infection 67(4): 348-350

Bayer, T.A.; Jäkälä, P.; Hartmann, T.; Havas, L.; McLean, C.; Culvenor, J.G.; Li, Q.X.; Masters, C.L.; Falkai, P.; Beyreuther, K., 1999: Alpha-synuclein accumulates in Lewy bodies in Parkinson's disease and dementia with Lewy bodies but not in Alzheimer's disease beta-amyloid plaque cores. A growing body of evidence suggests that the non-Abeta component of Alzheimer's disease amyloid precursor protein (NACP) or alpha-synuclein contributes to the neurodegenerative processes in Alzheimer's disease (AD), Parkinson's dise...