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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.
1 gru 2019 · TDLAS measures the mixing ratios of stable isotopes of carbon dioxide in the air (e.g., the isotopologues, 12 C 16 O 2, 13 C 16 O 2 and 16 O 12 C 18 O) by comparing the infrared absorption of sample and reference gases in a specific absorption line of the spectrum (Santos et al., 2012).
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...
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.
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 ...
22 wrz 2022 · The uptake of atmospheric CO 2 and the cycle of dissolved inorganic carbon (DIC) in the ocean are the major mechanisms and pathways controlling global climate change and carbon cycling. The stable carbon isotope (δ 13 C) of DIC, therefore, provides an important tracer for processes such as air-sea exchange, photosynthesis, and water dynamics ...
Instrumentation for the continuous measurement of stable isotopes in atmospheric trace substances such as carbon dioxide (CO2), methane (CH4), and also water vapor (H2O), has grown tremendously in the last decade.
