Iran vs United States: Nitrous oxide (N2O) emissions from Transport (Energy)

Iran
4.51 Mt CO2e
in 2024
United States
20.68 Mt CO2e
in 2024
Iran rank
4th
United States rank
2nd

Nitrous oxide (N2O) emissions from Transport (Energy) over time

  • Iran
  • United States
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How they compare

United States currently reports 20.68 Mt CO2e against 4.51 Mt CO2e in Iran, a difference of 16.17 Mt CO2e.

That makes United States's figure about 4.6 times Iran's.

Across all 55 years both countries report, United States has been ahead every year.

Iran ranks 4th and United States ranks 2nd of 194 countries.

United States has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade Iran United States Difference Ahead
1970s 0.1429 Mt CO2e 14.74 Mt CO2e 14.6 Mt CO2e United States
1980s 0.2797 Mt CO2e 15.81 Mt CO2e 15.53 Mt CO2e United States
1990s 0.6825 Mt CO2e 18.5 Mt CO2e 17.82 Mt CO2e United States
2000s 1.27 Mt CO2e 28.47 Mt CO2e 27.21 Mt CO2e United States
2010s 3.72 Mt CO2e 24.73 Mt CO2e 21.01 Mt CO2e United States
2020s 4.36 Mt CO2e 20.56 Mt CO2e 16.2 Mt CO2e United States

Averages of every year both report within each decade.

Frequently asked questions

Which has higher nitrous oxide (n2o) emissions from transport (energy), Iran or United States?
United States, at 20.68 Mt CO2e against 4.51 Mt CO2e in Iran as of 2024.
What is the difference in nitrous oxide (n2o) emissions from transport (energy) between Iran and United States?
16.17 Mt CO2e, with United States ahead.
How many years of comparable data are there for Iran and United States?
55 years are reported by both, from 1970 to 2024.
How do Iran and United States rank globally for nitrous oxide (n2o) emissions from transport (energy)?
Iran ranks 4th and United States ranks 2nd of 194 countries.
Where does this data come from?
EDGAR (Emissions Database for Global Atmospheric Research) Community GHG Database, Joint Research Centre (JRC) - European Commission, published as Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iran vs United States: Nitrous oxide (N2O) emissions from Transport (Energy). Statizoid, drawing on EDGAR (Emissions Database for Global Atmospheric Research) Community GHG Database, Joint Research Centre (JRC) - European Commission. Retrieved 01 September 2026, from https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-transport-energy-mt-co2e/iran-islamic-rep/united-states/

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<a href="https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-transport-energy-mt-co2e/iran-islamic-rep/united-states/">Iran vs United States: Nitrous oxide (N2O) emissions from Transport (Energy)</a> — Statizoid

About this data

Indicator
Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e)
Unit
Mt CO2e
Source
EDGAR (Emissions Database for Global Atmospheric Research) Community GHG Database, Joint Research Centre (JRC) - European Commission
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
241 places, 13,255 data points, 1970–2024
Last refreshed

A measure of annual emissions of nitrous oxide (N2O), one of the six Kyoto greenhouse gases (GHG), from the transportation sector (subsector of the energy sector) including IPCC 2006 codes 1.A.3.a Civil Aviation, 1.A.3.b_noRES Road Transportation no resuspension, 1.A.3.c Railways, 1.A.3.d Water-borne Navigation, 1.A.3.e Other Transportation. The measure is standardized to carbon dioxide equivalent values using the Global Warming Potential (GWP) factors of IPCC's 5th Assessment Report (AR5).