In 2023, emissions of nitrous oxide, also known as laughing gas, amounted to around **** million metric tons of COâ‚‚ equivalent. The figures have been decreasing since 2010 when the emission amounted to close to ** million metric tons.
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Greenhouse Gas Inventory Office of Japan. (April 25, 2025). Nitrous oxide emissions in Japan from 2010 to 2023 (in million metric tons of COâ‚‚ equivalent) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 14, 2026, from /statistics/1170227/japan-nitrous-oxide-emissions/
Greenhouse Gas Inventory Office of Japan. "Nitrous oxide emissions in Japan from 2010 to 2023 (in million metric tons of COâ‚‚ equivalent)." Chart. April 25, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 14, 2026. /statistics/1170227/japan-nitrous-oxide-emissions/
Greenhouse Gas Inventory Office of Japan. (2025). Nitrous oxide emissions in Japan from 2010 to 2023 (in million metric tons of COâ‚‚ equivalent). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 14, 2026. /statistics/1170227/japan-nitrous-oxide-emissions/
Greenhouse Gas Inventory Office of Japan. "Nitrous Oxide Emissions in Japan from 2010 to 2023 (in Million Metric Tons of Coâ‚‚ Equivalent)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 25 Apr 2025, /statistics/1170227/japan-nitrous-oxide-emissions/
Greenhouse Gas Inventory Office of Japan, Nitrous oxide emissions in Japan from 2010 to 2023 (in million metric tons of COâ‚‚ equivalent) ÌÇÐÄÆƽâ°æ, /statistics/1170227/japan-nitrous-oxide-emissions/ (last visited July 14, 2026)
Nitrous oxide emissions in Japan from 2010 to 2023 (in million metric tons of COâ‚‚ equivalent) [Graph], Greenhouse Gas Inventory Office of Japan, April 25, 2025. [Online]. Available: /statistics/1170227/japan-nitrous-oxide-emissions/
