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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.
14 mar 2016 · Significance. Antarctic ice cores provide a precise, well-dated history of increasing atmospheric CO 2 during the last glacial to interglacial transition. However, the mechanisms that drive the increase remain unclear.
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 ...
28 wrz 2011 · The stable isotope ratios of atmospheric CO 2 (18 O/ 16 O and 13 C/ 12 C) have been monitored since 1977 to improve our understanding of the global carbon cycle, because biosphere–atmosphere...
3 wrz 2024 · This study emphasizes the importance of monitoring stable isotopes of atmospheric CO2, especially in volcanic areas, contributing valuable insights for environmental and public health...
Introduction. Carbon isotopes are present in the atmosphere, ocean, and terrestrial biosphere in ratios of approximately 99% 12C/C, 1% 13C/C, and 1 × 10−1214C/C. 12C and 13C are stable isotopes while 14C is a radioactive isotope called radiocarbon.
This review focuses on the kinetic and photolysis isotope effects relevant to understanding the isotope compositions of atmospheric ozone, carbon dioxide, methane, nitrous oxide, and other gases and their historical context.
