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• W2888615758 abstract "The potent greenhouse gas nitrous oxide (N2 O) may have been an important constituent of Earth's atmosphere during Proterozoic (~2.5-0.5 Ga). Here, we tested the hypothesis that chemodenitrification, the rapid reduction of nitric oxide by ferrous iron, would have enhanced the flux of N2 O from ferruginous Proterozoic seas. We empirically derived a rate law, dN2Odt=7.2×10-5[Fe2+]0.3[NO]1 , and measured an isotopic site preference of +16‰ for the reaction. Using this empirical rate law, and integrating across an oceanwide oxycline, we found that low nM NO and μM-low mM Fe2+ concentrations could have sustained a sea-air flux of 100-200 Tg N2 O-N year-1 , if N2 fixation rates were near-modern and all fixed N2 was emitted as N2 O. A 1D photochemical model was used to obtain steady-state atmospheric N2 O concentrations as a function of sea-air N2 O flux across the wide range of possible pO2 values (0.001-1 PAL). At 100-200 Tg N2 O-N year-1 and >0.1 PAL O2 , this model yielded low-ppmv N2 O, which would produce several degrees of greenhouse warming at 1.6 ppmv CH4 and 320 ppmv CO2 . These results suggest that enhanced N2 O production in ferruginous seawater via a previously unconsidered chemodenitrification pathway may have helped to fill a Proterozoic greenhouse gap, reconciling an ice-free Mesoproterozoic Earth with a less luminous early Sun. A particularly notable result was that high N2 O fluxes at intermediate O2 concentrations (0.01-0.1 PAL) would have enhanced ozone screening of solar UV radiation. Due to rapid photolysis in the absence of an ozone shield, N2 O is unlikely to have been an important greenhouse gas if Mesoproterozoic O2 was 0.001 PAL. At low O2 , N2 O might have played a more important role as life's primary terminal electron acceptor during the transition from an anoxic to oxic surface Earth, and correspondingly, from anaerobic to aerobic metabolisms." @default.
• W2888615758 created "2018-08-31" @default.
• W2888615758 creator A5004482310 @default.
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• W2888615758 creator A5075632629 @default.
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• W2888615758 creator A5083137322 @default.
• W2888615758 date "2018-08-22" @default.
• W2888615758 modified "2023-10-18" @default.
• W2888615758 title "Nitrous oxide from chemodenitrification: A possible missing link in the Proterozoic greenhouse and the evolution of aerobic respiration" @default.
• W2888615758 cites W1494460556 @default.
• W2888615758 cites W1529539732 @default.
• W2888615758 cites W1534025708 @default.
• W2888615758 cites W1543573470 @default.
• W2888615758 cites W1631820701 @default.
• W2888615758 cites W1632677476 @default.
• W2888615758 cites W1669958838 @default.
• W2888615758 cites W1696146127 @default.
• W2888615758 cites W176811721 @default.
• W2888615758 cites W1937431683 @default.
• W2888615758 cites W1965889048 @default.
• W2888615758 cites W1966712389 @default.
• W2888615758 cites W1971256361 @default.
• W2888615758 cites W1974045653 @default.
• W2888615758 cites W1974549602 @default.
• W2888615758 cites W1979372968 @default.
• W2888615758 cites W1980195358 @default.
• W2888615758 cites W1980270634 @default.
• W2888615758 cites W1987490818 @default.
• W2888615758 cites W1990635958 @default.
• W2888615758 cites W1992945557 @default.
• W2888615758 cites W2000496027 @default.
• W2888615758 cites W2001363398 @default.
• W2888615758 cites W2007170430 @default.
• W2888615758 cites W2012858402 @default.
• W2888615758 cites W2013320201 @default.
• W2888615758 cites W2014138290 @default.
• W2888615758 cites W2017973394 @default.
• W2888615758 cites W2020775285 @default.
• W2888615758 cites W2024069837 @default.
• W2888615758 cites W2026372668 @default.
• W2888615758 cites W2033191700 @default.
• W2888615758 cites W2034128109 @default.
• W2888615758 cites W2034704121 @default.
• W2888615758 cites W2041762395 @default.
• W2888615758 cites W2043149980 @default.
• W2888615758 cites W2044771105 @default.
• W2888615758 cites W2049273731 @default.
• W2888615758 cites W2054607874 @default.
• W2888615758 cites W2055753907 @default.
• W2888615758 cites W2058252065 @default.
• W2888615758 cites W2059539744 @default.
• W2888615758 cites W2062900030 @default.
• W2888615758 cites W2066200707 @default.
• W2888615758 cites W2066547937 @default.
• W2888615758 cites W2068340374 @default.
• W2888615758 cites W2069345349 @default.
• W2888615758 cites W2070123862 @default.
• W2888615758 cites W2071712391 @default.
• W2888615758 cites W2072090442 @default.
• W2888615758 cites W2073562922 @default.
• W2888615758 cites W2075271243 @default.
• W2888615758 cites W2076613851 @default.
• W2888615758 cites W2077738873 @default.
• W2888615758 cites W2084346501 @default.
• W2888615758 cites W2084442606 @default.
• W2888615758 cites W2086774661 @default.
• W2888615758 cites W2087224734 @default.
• W2888615758 cites W2090018550 @default.
• W2888615758 cites W2097417202 @default.
• W2888615758 cites W2101206027 @default.
• W2888615758 cites W2102135244 @default.
• W2888615758 cites W2102201951 @default.
• W2888615758 cites W2107212167 @default.
• W2888615758 cites W2107459584 @default.
• W2888615758 cites W2113507655 @default.
• W2888615758 cites W2115870669 @default.
• W2888615758 cites W2126607624 @default.
• W2888615758 cites W2129191970 @default.
• W2888615758 cites W2132666243 @default.
• W2888615758 cites W2133813560 @default.
• W2888615758 cites W2137430370 @default.
• W2888615758 cites W2140155508 @default.
• W2888615758 cites W2141747219 @default.
• W2888615758 cites W2143074371 @default.
• W2888615758 cites W2143242500 @default.
• W2888615758 cites W2146665653 @default.
• W2888615758 cites W2147270091 @default.
• W2888615758 cites W2148509426 @default.
• W2888615758 cites W2154282591 @default.
• W2888615758 cites W2154610441 @default.
• W2888615758 cites W2154735987 @default.
• W2888615758 cites W2156045345 @default.
• W2888615758 cites W2159498623 @default.
• W2888615758 cites W2164200068 @default.
• W2888615758 cites W2166754395 @default.

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