Japan vs Portugal: IPPU — Emissions (CO2eq) from N2O (AR5), per square kilometre

Japan
0.0029 kt per square kilometre
in 2023
Portugal
0.0027 kt per square kilometre
in 2023
Japan rank
37th
Portugal rank
40th

IPPU — Emissions (CO2eq) from N2O (AR5), per square kilometre over time

  • Japan
  • Portugal
00.010.020.03196119922023

How they compare

Japan currently reports 0.0029 kt per square kilometre against 0.0027 kt per square kilometre in Portugal, a difference of 0.0002 kt per square kilometre.

That makes Japan's figure about 1.1 times Portugal's.

The two have swapped places 4 times across 63 shared years of data; in 1961 it was Japan ahead.

Japan ranks 37th and Portugal ranks 40th of 186 countries.

Across the 7 decades both report, Japan averaged higher in 6 and Portugal in 1.

Head to head by decade

Decade Japan Portugal Difference Ahead
1960s 0.0204 kt per square kilometre 0.0114 kt per square kilometre 0.009 kt per square kilometre Japan
1970s 0.022 kt per square kilometre 0.0143 kt per square kilometre 0.0077 kt per square kilometre Japan
1980s 0.0224 kt per square kilometre 0.0085 kt per square kilometre 0.0139 kt per square kilometre Japan
1990s 0.0246 kt per square kilometre 0.0042 kt per square kilometre 0.0204 kt per square kilometre Japan
2000s 0.0068 kt per square kilometre 0.0042 kt per square kilometre 0.0026 kt per square kilometre Japan
2010s 0.0037 kt per square kilometre 0.0037 kt per square kilometre 0 kt per square kilometre Japan
2020s 0.003 kt per square kilometre 0.0032 kt per square kilometre 0.0001 kt per square kilometre Portugal

Averages of every year both report within each decade.

Frequently asked questions

Which has higher ippu — emissions (co2eq) from n2o (ar5), per square kilometre, Japan or Portugal?
Japan, at 0.0029 kt per square kilometre against 0.0027 kt per square kilometre in Portugal as of 2023.
What is the difference in ippu — emissions (co2eq) from n2o (ar5), per square kilometre between Japan and Portugal?
0.0002 kt per square kilometre, with Japan ahead.
How many years of comparable data are there for Japan and Portugal?
63 years are reported by both, from 1961 to 2023.
How do Japan and Portugal rank globally for ippu — emissions (co2eq) from n2o (ar5), per square kilometre?
Japan ranks 37th and Portugal ranks 40th of 186 countries.
Where does this data come from?
Statizoid (derived), published as IPPU — Emissions (CO2eq) from N2O (AR5), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Japan vs Portugal: IPPU — Emissions (CO2eq) from N2O (AR5), per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 22 September 2026, from https://climate.statizoid.com/compare/ippu-emissions-co2eq-from-n2o-ar5-per-square-kilometre/japan/portugal/

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About this data

Indicator
IPPU — Emissions (CO2eq) from N2O (AR5), per square kilometre
Unit
kt per square kilometre
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
187 places, 10,734 data points, 1961–2023
Last refreshed

IPPU — Emissions (CO2eq) from N2O (AR5) divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.