How many years of comparable data are there for Sierra Leone and Tanzania?

54 years are reported by both, from 1970 to 2023.

Where does this data come from?

Statizoid (derived), published as Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sierra Leone vs Tanzania: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square

Sierra Leone

0 Mt CO2e per square kilometre

in 2023

Tanzania

0 Mt CO2e per square kilometre

in 2023

Sierra Leone rank

152nd

Tanzania rank

150th

Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square over time

Sierra Leone
Tanzania

How they compare

Tanzania currently reports 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Sierra Leone, a difference of 0 Mt CO2e per square kilometre.

The two have swapped places 4 times across 54 shared years of data; in 1970 it was Tanzania ahead.

Sierra Leone ranks 152nd and Tanzania ranks 150th of 194 countries.

Sierra Leone has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Sierra Leone	Tanzania	Difference	Ahead
1970s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
1980s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
1990s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2000s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2010s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2020s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher methane (ch4) emissions from transport (energy) (mt co2e), per square, Sierra Leone or Tanzania?: Tanzania, at 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Sierra Leone as of 2023.
What is the difference in methane (ch4) emissions from transport (energy) (mt co2e), per square between Sierra Leone and Tanzania?: 0 Mt CO2e per square kilometre, with Tanzania ahead.
How many years of comparable data are there for Sierra Leone and Tanzania?: 54 years are reported by both, from 1970 to 2023.
How do Sierra Leone and Tanzania rank globally for methane (ch4) emissions from transport (energy) (mt co2e), per square?: Sierra Leone ranks 152nd and Tanzania ranks 150th of 194 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) 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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Sierra Leone vs Tanzania: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-from-transport-energy-mt-co2e-per-square-kilometre/sierra-leone/tanzania/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-from-transport-energy-mt-co2e-per-square-kilometre/sierra-leone/tanzania/">Sierra Leone vs Tanzania: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square</a> — Statizoid

About this data

Indicator: Methane (CH4) 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: 21 September 2026

Methane (CH4) 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.