R. Siever The silica cycle in the Precambrian Geochim. Cosmochim. Acta, 56 (8) (1992), pp. 3265-3272 View PDFView articleView in ScopusGoogle Scholar Sleep and Zahnle, 2001 N.H. Sleep, K. Zahnle Carbon dioxide cycling and implications for climate on ancient Earth J. Geophys. Res., ...
Humanshave disturbed the biological carbon cycle for many centuries by modifyingland use, and moreover with the recentindustrial-scale miningof fossil carbon (coal,petroleumand gas extraction, andcementmanufacture) from the geosphere.Carbon dioxidein the atmosphere had increased nearly 52% over pre-ind...
Carbon dioxide is a desired feedstock for platform molecules, such as carbon monoxide or higher hydrocarbons, from which we will be able to make many different useful, value-added chemicals. Its catalytic hydrogenation over abundant metals requires the a
carbon dioxidecarbon cycleocean-atmosphere exchangesglacial-interglacialThe aim of this paper is to explain observed correlations between temperature and carbon dioxide concentrations in Antarctic ices. Chemical characteristics of the carbonate system, biological and calcium carbonate pumps between superficial ...
The concentration of carbon dioxide (CO2) in the Earth's atmosphere is rising rapidly1, with the potential to alter many ecosystem processes. Elevated CO2 often stimulates photosynthesis2, creating the possibility that the terrestrial biosphere will sequ
Figure 1. Biological components of the carbon cycle in a turfgrass–soil system. Blue boxes indicate carbon gains in the turfgrass system, and gray boxes indicate carbon losses in the turfgrass system or carbon emissions to the atmosphere. This figure describes common scenarios in which clippings ...
The atmosphere was first made up by volcanic activity, of carbon dioxide and water vapour, two greenhouse gases. Eventually, nitrogen was added to the atmosphere. The oceans were created and carbon dioxide was established within the carbon cycle with formation of carbonates. These greenhouse gases ...
Where on earth do we find carbon dioxide? Carbon dioxide can be found mainly in air, but also in water as a part of the carbon cycle. We can show you how the carbon cycle works, by means of an explanation and a schematic representation. --> Move to the Carbon Cycle. Applications of...
“Consolidation and strengthen of carbon sink capacity”, as one of ten key tasks, has been listed in an action plan for peaking carbon dioxide emissions by 2030 in China, to consolidate carbon sequestration of ecosystem (including karst) and strengthen fundamental support of carbon sink. In kars...
A multiple-box model was designed to determine how anthropogenic, biological, and meteo- rological processes combine to produce diel cycles of carbon dioxide (CO2) concentrations within the urban Salt Lake Valley (uSLV). The model was forced by an anthropogenic CO2 emissions inventory, observed win...