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Nitrous Oxide (N 2 O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century

Ravishankara, A. R., Daniel, John S., Portmann, Robert W.·2009·Science

Abstract

Unwelcome Dominance: Stratospheric ozone is depleted by many different chemicals; most prominently, chlorofluorocarbons (CFCs) responsible for causing the Antarctic ozone hole. Nitrous oxide is also an ozone-depleting substance that has natural sources in addition to anthropogenic ones. Moreover, unlike CFCs, its use and emission are not regulated by the Montreal Protocol, which has helped to reverse the rate of growth of the ozone hole. Surprisingly, Ravishankara et al. (p. 123 , published online 27 August; see the Perspective by Wuebbles ) now show that nitrous oxide is the single greatest ozone-depleting substance that, if its emissions are not controlled, is expected to remain the dominant ozone-depleting substance throughout the 21st century. Reducing nitrous oxide emissions would thus enhance the rate of recovery of the ozone hole and reduce the anthropogenic forcing of climate.

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Metadata

Authors
Ravishankara, A. R., Daniel, J. S., & Portmann, R. W.
Venue
Science
Published
2009-10-02
Volume
326
Issue
5949
Pages
123-125
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2154610441
Cited by
4,581
References
1
FWCI
95.35
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Nitrous Oxide (N 2 O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century. https://app.cochat.ai/papers/10.1126/science.1176985
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Ravishankara, A. R., Daniel, J. S., & Portmann, R. W. (2009). Nitrous Oxide (N 2 O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century. Science. https://doi.org/10.1126/science.1176985

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