The globally-averaged mean atmospheric nitrous oxide (N₂O) abundance reached a new record high of 337.7 parts per million (ppb) in 2024. Annual atmospheric N₂O concentrations have increased by more almost seven percent since 2001. Nitrous oxide is a potent greenhouse gas with a global warming potential (GWP) 300 times greater than carbon dioxide. One factor for the rise in N₂0 levels has been the increased use of nitrogen fertilizer for agriculture.
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National Oceanic and Atmospheric Administration. (June 5, 2025). Globally-averaged mean atmospheric nitrous oxide (Nâ‚‚O) abundance from 2001 to 2024 (in parts per billion) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/1384858/annual-atmospheric-concentration-of-nitrous-oxide-historic/
National Oceanic and Atmospheric Administration. "Globally-averaged mean atmospheric nitrous oxide (Nâ‚‚O) abundance from 2001 to 2024 (in parts per billion)." Chart. June 5, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/1384858/annual-atmospheric-concentration-of-nitrous-oxide-historic/
National Oceanic and Atmospheric Administration. (2025). Globally-averaged mean atmospheric nitrous oxide (Nâ‚‚O) abundance from 2001 to 2024 (in parts per billion). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/1384858/annual-atmospheric-concentration-of-nitrous-oxide-historic/
National Oceanic and Atmospheric Administration. "Globally-averaged Mean Atmospheric Nitrous Oxide (Nâ‚‚o) Abundance from 2001 to 2024 (in Parts per Billion)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 5 Jun 2025, /statistics/1384858/annual-atmospheric-concentration-of-nitrous-oxide-historic/
National Oceanic and Atmospheric Administration, Globally-averaged mean atmospheric nitrous oxide (Nâ‚‚O) abundance from 2001 to 2024 (in parts per billion) ÌÇÐÄÆƽâ°æ, /statistics/1384858/annual-atmospheric-concentration-of-nitrous-oxide-historic/ (last visited July 26, 2026)
Globally-averaged mean atmospheric nitrous oxide (Nâ‚‚O) abundance from 2001 to 2024 (in parts per billion) [Graph], National Oceanic and Atmospheric Administration, June 5, 2025. [Online]. Available: /statistics/1384858/annual-atmospheric-concentration-of-nitrous-oxide-historic/
