Global nitrogen oxide (NOx) emissions from shipping totaled **** million metric tons in 2022. NOx emissions from shipping roughly doubled between 1990 and 2008, to a peak of million metric tons. Since then, NOx emissions from shipping have fallen by more than ** percent. NOx air pollution is harmful to human health and the environment.
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OWID. (February 14, 2025). Nitrogen oxide (NOx) emissions from shipping worldwide from 1970 to 2022 (metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 20, 2026, from /statistics/1483325/global-shipping-nitrogen-oxide-emissions/
OWID. "Nitrogen oxide (NOx) emissions from shipping worldwide from 1970 to 2022 (metric tons)." Chart. February 14, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 20, 2026. /statistics/1483325/global-shipping-nitrogen-oxide-emissions/
OWID. (2025). Nitrogen oxide (NOx) emissions from shipping worldwide from 1970 to 2022 (metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 20, 2026. /statistics/1483325/global-shipping-nitrogen-oxide-emissions/
OWID. "Nitrogen Oxide (Nox) Emissions from Shipping Worldwide from 1970 to 2022 (Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 14 Feb 2025, /statistics/1483325/global-shipping-nitrogen-oxide-emissions/
OWID, Nitrogen oxide (NOx) emissions from shipping worldwide from 1970 to 2022 (metric tons) ÌÇÐÄÆƽâ°æ, /statistics/1483325/global-shipping-nitrogen-oxide-emissions/ (last visited July 20, 2026)
Nitrogen oxide (NOx) emissions from shipping worldwide from 1970 to 2022 (metric tons) [Graph], OWID, February 14, 2025. [Online]. Available: /statistics/1483325/global-shipping-nitrogen-oxide-emissions/
