Search Results - "Tyler, S. C"
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1
Contribution of anthropogenic and natural sources to atmospheric methane variability
Published in Nature (28-09-2006)“…Methane is an important greenhouse gas, and its atmospheric concentration has nearly tripled since pre-industrial times. The growth rate of atmospheric methane…”
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2
Carbon budget and sequestration potential in a sandy soil treated with compost
Published in Land degradation & development (01-03-2014)“…The effects of compost application on soil carbon sequestration potential and carbon budget of a tropical sandy soil was studied. Greenhouse gas emissions from…”
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3
Emissions of Methyl Halides and Methane from Rice Paddies
Published in Science (American Association for the Advancement of Science) (03-11-2000)“…Methyl halide gases are important sources of atmospheric inorganic halogen compounds, which in turn are central reactants in many stratospheric and…”
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4
Soil Organic Carbon Loss and Turnover Resulting from Forest Conversion to Maize Fields in Eastern Thailand
Published in Pedosphere (01-10-2011)“…Soil organic carbon(SOC) content and its stable carbon isotopic composition(within the upper 1 m) were measured to determine the e?ect of land-use changes from…”
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5
Controls on methane concentration and stable isotope (δ2H-CH4 and δ13C-CH4) distributions in the water columns of the Black Sea and Cariaco Basin
Published in Global biogeochemical cycles (01-12-2006)“…Methane (CH4) concentration and stable isotope (δ2H‐CH4 and δ13C‐CH4) depth distributions show large differences in the water columns of the Earth's largest…”
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A survey of methane isotope abundance (14C, 13C, 2H) from five nearshore marine basins that reveals unusual radiocarbon levels in subsurface waters
Published in Journal of Geophysical Research - Oceans (01-12-2008)“…Methane (CH4) in the subsurface ocean is often supersaturated compared to equilibrium with the modern atmosphere. In order to investigate sources of CH4 to the…”
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7
Identifying the agricultural imprint on the global N2O budget using stable isotopes
Published in Journal of Geophysical Research: Atmospheres (16-05-2001)“…Agricultural soils are the most important anthropogenic source of nitrous oxide to the atmosphere. We observed large shifts with time in the emission rate…”
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8
Isotopic variability of N2O emissions from tropical forest soils
Published in Global biogeochemical cycles (01-06-2000)“…We report measurements of the 15N and 18O signature of N2O emitted from tropical rain forest soils at the La Selva Biological station in Costa Rica and in the…”
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9
Basin-wide estimates of the input of methane from seeps and clathrates to the Black Sea
Published in Earth and planetary science letters (01-01-2006)“…Numerous methane-emitting bottom features, such as seeps, methane clathrate hydrates (clathrates), and mud volcanoes, have been identified recently in the…”
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10
Carbon and hydrogen isotopic compositions of stratospheric methane: 1. High-precision observations from the NASA ER-2 aircraft
Published in Journal of Geophysical Research - Atmospheres (16-08-2003)“…Measurements of δ13C and δD of atmospheric CH4 from whole air samples collected in the upper troposphere and lower stratosphere aboard the NASA ER‐2 aircraft…”
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11
Carbon and hydrogen isotopic compositions of stratospheric methane: 2. Two-dimensional model results and implications for kinetic isotope effects
Published in Journal of Geophysical Research - Atmospheres (16-08-2003)“…New high‐precision measurements of the carbon and hydrogen isotopic compositions of stratospheric CH4 made on whole air samples collected aboard the NASA ER‐2…”
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12
Can N2O stable isotopes and isotopomers be useful tools to characterize sources and microbial pathways of N2O production and consumption in tropical soils?
Published in Global biogeochemical cycles (01-03-2011)“…Nitrous oxide (N2O) is an important greenhouse gas in which the main sources are tropical rainforest and agricultural soils. N2O is produced in soils by…”
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13
Determination of isotope fractionation factors and quantification of carbon flow by stable carbon isotope signatures in a methanogenic rice root model system
Published in Geobiology (01-06-2006)“…ABSTRACT Methanogenic processes can be quantified by stable carbon isotopes, if necessary modeling parameters, especially fractionation factors, are known…”
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14
The hydrogen isotopic composition of water vapor entering the stratosphere inferred from high-precision measurements of δD-CH4 and δD-H2
Published in Journal of Geophysical Research - Atmospheres (16-04-2004)“…The hydrogen isotopic composition of water vapor entering the stratosphere provides an important constraint on the mechanisms for dehydration of air ascending…”
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15
Experimentally determined kinetic isotope effects in the reaction of CH4 with Cl: Implications for atmospheric CH4
Published in Geophysical research letters (15-06-2000)“…We report experimental values for the carbon and hydrogen kinetic isotope effects (KIEs) in the reaction of CH4 with Cl at temperatures between 273 and 350 K…”
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16
Patterns of CO2 and radiocarbon across high northern latitudes during International Polar Year 2008
Published in Journal of Geophysical Research: Atmospheres (27-07-2011)“…High‐resolution in situ CO2 measurements were conducted aboard the NASA DC‐8 aircraft during the ARCTAS/POLARCAT field campaign, a component of the wider…”
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17
Carbon and hydrogen isotope fractionation by moderately thermophilic methanogens
Published in Geochimica et cosmochimica acta (01-04-2004)“…A series of laboratory studies were conducted to increase understanding of stable carbon ( super 13C/ super 12C) and hydrogen (D/H) isotope fractionation…”
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18
Feature-based attention promotes biological motion recognition
Published in Journal of vision (Charlottesville, Va.) (01-09-2011)“…Motion perception is important for visually segregating and identifying objects from their surroundings, but in some cases extracting motion cues can be taxing…”
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Stable carbon and hydrogen isotope measurements on Black Sea water-column methane
Published in Deep-sea research. Part II, Topical studies in oceanography (01-08-2006)“…We report measurements of δ 13C-CH 4 and δ 2H-CH 4 at a central station in the Black Sea. We considered the Black Sea as a “biogeochemical bucket” and the…”
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Investigation of cattle methane production and emission over a 24-hour period using measurements of δ13C and δD of emitted CH4 and rumen water
Published in Journal of Geophysical Research: Atmospheres (27-07-2001)“…We have conducted a series of experiments to determine the effects different diets, including the addition of unsaturated fatty acids, had on isotopic…”
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