Stratospheric N2O isotope distribution
نویسنده
چکیده
Atmospheric Physics Division, Max Planck Institute for Nuclear Physics, Heidelberg, Germany Institute for Atmosphere and Environment, J. W. Goethe University, Frankfurt, Germany Planets and Comets Department, Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany ∗ now at: School of Environmental Sciences, University of East Anglia, Norwich, UK ∗∗ now at: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, The Netherlands
منابع مشابه
From the Ground Up: Global Nitrous Oxide Sources are Constrained by Stable Isotope Values
Rising concentrations of nitrous oxide (N2O) in the atmosphere are causing widespread concern because this trace gas plays a key role in the destruction of stratospheric ozone and it is a strong greenhouse gas. The successful mitigation of N2O emissions requires a solid understanding of the relative importance of all N2O sources and sinks. Stable isotope ratio measurements (δ15N-N2O and δ18O-N2...
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A comprehensive set of stratospheric balloon and aircraft samples was analyzed for the position-dependent isotopic composition of nitrous oxide (N2O). Results for a total of 220 samples from between 1987 and 2003 are presented, nearly tripling the number of mass-spectrometric N2O isotope measurements in the stratosphere published to date. Cryogenic balloon samples were obtained at polar (Kiruna...
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The atmospheric nitrous oxide mixing ratio has increased by 20% since 1750 (ref. 1). Given that nitrous oxide is both a long-lived greenhouse gas2 and a stratospheric ozonedepleting substance3, this increase is of global concern. However, the magnitude and geographic distribution of nitrous oxide sources, and how they have changed over time, is uncertain4,5. A key unknown is the influence of th...
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[1] Nitrous oxide (N2O) is an important atmospheric greenhouse gas and is involved in stratospheric ozone depletion. Analysis of the isotopomer ratios of N2O (i.e., the intramolecular distribution of N within the linear NNO molecule and the conventional N and O isotope ratios) can elucidate the mechanisms of N2O production and destruction. We analyzed the isotopomer ratios of dissolved N2O at a...
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Nitrous oxide (N2O) is a powerful greenhouse gas and a major cause of stratospheric ozone depletion, yet its sources and sinks remain poorly quantified in the oceans. We used isotope tracers to directly measure N2O reduction rates in the eastern tropical North Pacific. Because of incomplete denitrification, N2O cycling rates are an order of magnitude higher than predicted by current models in s...
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