Atmosphere (Mar 2023)

N<sub>2</sub>O Temporal Variability from the Middle Troposphere to the Middle Stratosphere Based on Airborne and Balloon-Borne Observations during the Period 1987–2018

  • Gisèle Krysztofiak,
  • Valéry Catoire,
  • Thierry Dudok de Wit,
  • Douglas E. Kinnison,
  • A. R. Ravishankara,
  • Vanessa Brocchi,
  • Elliot Atlas,
  • Heiko Bozem,
  • Róisín Commane,
  • Francesco D’Amato,
  • Bruce Daube,
  • Glenn S. Diskin,
  • Andreas Engel,
  • Felix Friedl-Vallon,
  • Eric Hintsa,
  • Dale F. Hurst,
  • Peter Hoor,
  • Fabrice Jegou,
  • Kenneth W. Jucks,
  • Armin Kleinböhl,
  • Harry Küllmann,
  • Eric A. Kort,
  • Kathryn McKain,
  • Fred L. Moore,
  • Florian Obersteiner,
  • Yenny Gonzalez Ramos,
  • Tanja Schuck,
  • Geoffrey C. Toon,
  • Silvia Viciani,
  • Gerald Wetzel,
  • Jonathan Williams,
  • Steven C. Wofsy

DOI
https://doi.org/10.3390/atmos14030585
Journal volume & issue
Vol. 14, no. 3
p. 585

Abstract

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Nitrous oxide (N2O) is the fourth most important greenhouse gas in the atmosphere and is considered the most important current source gas emission for global stratospheric ozone depletion (O3). It has natural and anthropogenic sources, mainly as an unintended by-product of food production activities. This work examines the identification and quantification of trends in the N2O concentration from the middle troposphere to the middle stratosphere (MTMS) by in situ and remote sensing observations. The temporal variability of N2O is addressed using a comprehensive dataset of in situ and remote sensing N2O concentrations based on aircraft and balloon measurements in the MTMS from 1987 to 2018. We determine N2O trends in the MTMS, based on observations. This consistent dataset was also used to study the N2O seasonal cycle to investigate the relationship between abundances and its emission sources through zonal means. The results show a long-term increase in global N2O concentration in the MTMS with an average of 0.89 ± 0.07 ppb/yr in the troposphere and 0.96 ± 0.15 ppb/yr in the stratosphere, consistent with 0.80 ppb/yr derived from ground-based measurements and 0.799 ± 0.024 ppb/yr ACE-FTS (Atmospheric Chemistry Experiment Fourier Transform Spectrometer) satellite measurements.

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