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23 paź 2020 · Key Points. 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.
• Carbon isotopes, 14C and 13C, 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 13C, BECCS • Applications using atmospheric 14C and 13C in studies of the carbon
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 ...
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 ...
Carbon has two stable (non-radioactive) isotopes. In nature, the 12 C isotope comprises 98.89% of all carbon and 13 C makes up the remaining 1.11%. A variety of physico-chemical processes whose rates are mass-dependent, such as kinetic reactions involving diffusion, and temperature-controlled equilibrium reactions serve to “fractionate” the ...
1 sty 2018 · This chapter focusses on main applications of carbon isotopes in marine and climate sciences, which include reconstructions of the global carbon cycle, chemostratigraphy, tracing of water masses, and surface water productivity in the modern and past ocean, reconstructing early life, and likewise are relevant to applied forensic applications in ...
The cumulative change of anthropogenic carbon in the terrestrial reservoir is the sum of carbon cumulatively lost by net land-use change emissions, and net carbon accumulated since 1750 in response to environmental drivers (warming, rising CO 2, nitrogen deposition).
