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Atmospheric methane
About: Atmospheric methane is a research topic. Over the lifetime, 2034 publications have been published within this topic receiving 119616 citations.
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TL;DR: In this article, an overlooked reservoir of high-affinity methane-oxidizers represented by the canonical methanotrophs in agriculture-impacted upland soils was revealed.
Abstract: Aerobic oxidation of methane at (circum-)atmospheric concentrations ( CH4 labelling incubation in the presence and absence of bio-based residues that were added to the soil to track the flow of methane. Residue amendment transiently stimulated methane uptake rate ( CO2. The 13C-enriched phospholipid fatty acids (PLFAs) were distinct in both soils, irrespective of amendments, and were unambiguously assigned almost exclusively to canonical alphaproteobacterial methanotrophs with cultured representatives. 16S rRNA and pmoA gene sequence analyses revealed that the as-yet-uncultured high-affinity methanotrophs were virtually absent in these soils. The stable-isotope labelling approach allowed to attribute soil methane uptake to canonical methanotrophs, whereas these were not expected to consume (circum-)atmospheric methane. Our findings thus revealed an overlooked reservoir of high-affinity methane-oxidizers represented by the canonical methanotrophs in agriculture-impacted upland soils. Given that upland agricultural soils have been thought to marginally or do not contribute to atmospheric methane consumption due to the vulnerability of the high-affinity methanotrophs, our findings suggest a thorough revisiting of the contribution of agricultural soils, and the role of agricultural management to mitigation of climate change.
33 citations
TL;DR: In this paper, the authors analyzed spectra from the Space Telescope Imaging Spectrograph, looking at both a bright surface region (700-km radius) and a dark surface region, and attributed the difference between the spectra of the two regions is attributed to light that has scattered off the surface, and therefore made a roundtrip through all of Titan's methane.
33 citations
TL;DR: In this paper, a fractal-like chemical kinetics equation was introduced to calculate methane generation rate from landfill, QCH4 (m 3/year), in the way: Q CH 4 =L 0 ∑ j ∑ i M ij C ij 0 k i (t j ) −d s /2 exp [−k i t j ], where fermentable wastes are partitioned in readily, moderately and slowly biodegradable categories, L0 is the potential of methane yield of refuse (m3/tonne under standard conditions), ds is the
33 citations
TL;DR: In this article, the maximum methane flux from coal mining, oil mining and gas mining, including transportation and storage, was estimated and it was shown that the USSR contributes up to 43% of the global fossil fuel source of methane.
33 citations
TL;DR: In this paper, a 0.1°×-0. 1° gridded inventory of oil/gas emissions in Canada for 2013 and Mexico for 2010 was developed by disaggregating national emission inventories using best available data for production, processing, transmission, and distribution.
33 citations