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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 paź 2024 · Scientists know that the source of CO₂ in the atmosphere is the result of human activity (e.g. burning fossil fuels to produce electricity, transport, and industrial processes). This is because they can analyse the different isotopes of carbon in atmospheric CO₂ to understand their sources.
16 maj 2007 · About 40% of the extra CO 2 entering the atmosphere due to human activity is being absorbed by natural carbon sinks, mostly by the oceans. The rest is boosting levels of CO 2 in the...
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).
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...
15 sty 2023 · Indoor CO 2 from Direct Air Capture is assessed as potential renewable carbon feedstock. •. Environmental and health risks associated to CO 2 exposure are presented. •. Factors influencing CO 2 concentration in representative indoor air are reviewed. •.
1 dzień temu · Governments and companies around the world must step up efforts to make building and construction greener, according to a new UN report. “Green-building” is more than just a good idea. Reducing carbon output from buildings and construction is essential if we’re going to meet the Paris Agreement goal of limiting global warming to well ...
