N.: Terrestrial Biospheric Carbon Fluxes Quantification of Sinks and Sources of CO2,Whiting, G. J., and J. P. Chanton (2001), Greenhouse carbon balance of wetlands: Methane emission versus carbon sequestration, Tellus, Ser. B, 53, 521 - 528....
While CO2 remains in the atmosphere for centuries, methane breaks down after about a decade - meaning it has less of a long-term impact on temperatures. Scientists normally compare the overall warming effects of methane versus CO2 over a century, calculating that methane emis...
4). Compared to prolonged drought with CO2 as the dominant greenhouse gas (Fig. 4a) and prolonged flooding where CH4 takes that role (Fig. 4c), the assessment of CH4 fluxes under hydrological fluctuations appears more challenging. Several factors caused by those fluctuations contribute to this ...
Methane is a potent greenhouse gas, estimated to have a Global Warming Potential (GWP) of 27-30 over 100 years, while CO2 has a GWP of 1 regardless of time period used. Defining what constitutes negligible methane emissions, and then ensuring the sector meets that target, is therefore a vi...
Stimulation of molecular nitrogen production by methane. Changes in concentrations of14N15N and15N15N versus time in a water sample collected from 26.5 m depth in Markandeya Reservoir on 15.06.2011 and incubated with15N-labelled nitrite in the absence (a) and presence (b) of methane ...
Given that CH4 is 25 times more active as a greenhouse gas than CO2 in a time horizon of 100 years26, our finding that CH4 emissions from lakes can be influenced by changes in consumer abundance at the top of lake food webs has implications for understanding lake ecosystems as integral ...
C. et al. H-bond-mediated selectivity control of formate versus co during CO2 photoreduction with two cooperative Cu/X sites. J. Am. Chem. Soc. 143, 6114–6122 (2021). 37. Wang, G. et al. Engineering a copper single-atom electron bridge to achieve efficient photocatalytic CO2 conversion...
Recently stringent environmental regulations limiting the emissions of pollutants and the continuing decline in the quality of petroleum feedstocks have made conversion and utilization of carbon dioxide (CO2) and methane (CH4), two important greenhouse gases (GHG), one of the paramount problems in chem...
High-purity CO2 (Messer Griesheim, Frankfurt, Ger- many) was used as the working monitoring gas. 13C/12C ratios (δ13C values) are expressed in the conventional δ notation in per mil versus VPDB, calculated as: δ13CV PDB = À13CÁ ! À1312CCÁ Sample À 1 12C Standard ð...
Dry reforming of methane (DRM) is an attractive route to utilize CO2 as a chemical feedstock with which to convert CH4 into valuable syngas and simultaneously mitigate both greenhouse gases. Ni-based DRM catalysts are promising due to their high activity