articleEarth system science dataJun 11, 2024GOLD OA

Global nitrous oxide budget (1980–2020)

HTHanqin TianNPNaiqing PanRLRona L. ThompsonJGJosep G. CanadellPSParvadha Suntharalingam

Boston College · Kjeller Innovasjon (Norway) · +69 more institutions

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Abstract

Abstract. Nitrous oxide (N2O) is a long-lived potent greenhouse gas and stratospheric ozone-depleting substance that has been accumulating in the atmosphere since the preindustrial period. The mole fraction of atmospheric N2O has increased by nearly 25 % from 270 ppb (parts per billion) in 1750 to 336 ppb in 2022, with the fastest annual growth rate since 1980 of more than 1.3 ppb yr−1 in both 2020 and 2021. According to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR6), the relative contribution of N2O to the total enhanced effective radiative forcing of greenhouse gases was 6.4 % for 1750–2022. As a core component of our global greenhouse gas assessments coordinated by…

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Topics & keywords

Topics
Keywords
  • Greenhouse gas
  • Environmental science
  • Nitrous oxide
  • Radiative forcing
  • Atmospheric sciences
  • Biogeochemical cycle
  • Climatology
  • Meteorology
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