Search results
23 paź 2020 · Carbon isotopes, 14 C and 13 C, in atmospheric CO 2 are changing in response to fossil fuel emissions and other human activities. Future simulations using different SSPs show continued changes in isotopic ratios that depend on fossil fuel emissions and, for 13 C, BECCS.
17 sty 2018 · Atmospheric effects must be taken into account when interpreting terrestrial stable carbon isotopes, with important implications for past environments and climates, and understanding plant ...
Despite the numerous estimations of CO 2 fluxes from lakes, limited focus has been directed towards the carbon isotopes (δ 13 C) of dissolved CO 2 in lake water. Particularly, the potential use of δ 13 C values in tracing the CO 2 concentrations in lake water remains as an understudied area, warranting further exploration and investigation.
25 kwi 2016 · A reconstruction of atmospheric CO2 concentration from boron isotopes recorded in planktonic foraminifera examines climate–carbon interactions over the past tens of millions of years and ...
15 lis 2020 · Emissions of CO2 from fossil fuel combustion and land use change reduce the ratio of 13C/12C in atmospheric CO2 (δ13CO2). This is because 12C is preferentially assimilated during photosynthesis...
28 wrz 2021 · Stable isotopes of hydrogen, carbon and oxygen are used to investigate numerous physical and chemical processes in the water and inorganic carbon cycles. Measuring and comparing natural isotopic...
rising atmospheric CO2 levels lead to increased photo-synthetic uptake (e.g. Bernacchi et al. 2006) while transpiration rates remain constant or are reduced, the ratio of carbon assimilated to water transpired by plants, i.e. the water use efficiency (WUE), increases. The increase in the atmospheric CO2 mole fraction thus affects the carbon-
