How many years of comparable data are there for Azerbaijan and Tonga?

32 years are reported by both, from 1992 to 2023.

Where does this data come from?

Statizoid (derived), published as Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Azerbaijan vs Tonga: Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per

Azerbaijan

0.0001 Mt CO2e per square kilometre

in 2023

Tonga

0.0001 Mt CO2e per square kilometre

in 2023

Azerbaijan rank

63rd

Tonga rank

65th

Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per over time

Azerbaijan
Tonga

How they compare

Azerbaijan currently reports 0.0001 Mt CO2e per square kilometre against 0.0001 Mt CO2e per square kilometre in Tonga, a difference of 0 Mt CO2e per square kilometre.

The two have swapped places 5 times across 32 shared years of data; in 1992 it was Tonga ahead.

Azerbaijan ranks 63rd and Tonga ranks 65th of 194 countries.

Tonga has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Azerbaijan	Tonga	Difference	Ahead
1990s	0 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Tonga
2000s	0 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Tonga
2010s	0.0001 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Tonga
2020s	0.0001 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher carbon dioxide (co2) emissions from transport (energy) (mt co2e), per, Azerbaijan or Tonga?: Azerbaijan, at 0.0001 Mt CO2e per square kilometre against 0.0001 Mt CO2e per square kilometre in Tonga as of 2023.
What is the difference in carbon dioxide (co2) emissions from transport (energy) (mt co2e), per between Azerbaijan and Tonga?: 0 Mt CO2e per square kilometre, with Azerbaijan ahead.
How many years of comparable data are there for Azerbaijan and Tonga?: 32 years are reported by both, from 1992 to 2023.
How do Azerbaijan and Tonga rank globally for carbon dioxide (co2) emissions from transport (energy) (mt co2e), per?: Azerbaijan ranks 63rd and Tonga ranks 65th of 194 countries.
Where does this data come from?: Statizoid (derived), published as Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Azerbaijan vs Tonga: Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/carbon-dioxide-co2-emissions-from-transport-energy-mt-co2e-per-square-kilometre/azerbaijan/tonga/

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<a href="https://environment.statizoid.com/compare/carbon-dioxide-co2-emissions-from-transport-energy-mt-co2e-per-square-kilometre/azerbaijan/tonga/">Azerbaijan vs Tonga: Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per</a> — Statizoid

About this data

Indicator: Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e), per square kilometre
Unit: Mt CO2e per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 241 places, 12,381 data points, 1970–2023
Last refreshed: 20 September 2026

Carbon dioxide (CO2) emissions from Transport (Energy) (Mt CO2e) 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.