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

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

Where does this data come from?

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

Guinea vs Sierra Leone: Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per

Guinea

0.0001 Mt CO2e per square kilometre

in 2023

Sierra Leone

0.0001 Mt CO2e per square kilometre

in 2023

Guinea rank

112th

Sierra Leone rank

109th

Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per over time

Guinea
Sierra Leone

How they compare

Sierra Leone currently reports 0.0001 Mt CO2e per square kilometre against 0.0001 Mt CO2e per square kilometre in Guinea, a difference of 0 Mt CO2e per square kilometre.

The two have swapped places 2 times across 54 shared years of data; in 1970 it was Sierra Leone ahead.

Guinea ranks 112th and Sierra Leone ranks 109th of 203 countries.

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

Head to head by decade

Decade	Guinea	Sierra Leone	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	0.0001 Mt CO2e per square kilometre	0.0001 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Sierra Leone
2020s	0.0001 Mt CO2e per square kilometre	0.0001 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 (total) excluding lulucf (mt co2e), per, Guinea or Sierra Leone?: Sierra Leone, at 0.0001 Mt CO2e per square kilometre against 0.0001 Mt CO2e per square kilometre in Guinea as of 2023.
What is the difference in methane (ch4) emissions (total) excluding lulucf (mt co2e), per between Guinea and Sierra Leone?: 0 Mt CO2e per square kilometre, with Sierra Leone ahead.
How many years of comparable data are there for Guinea and Sierra Leone?: 54 years are reported by both, from 1970 to 2023.
How do Guinea and Sierra Leone rank globally for methane (ch4) emissions (total) excluding lulucf (mt co2e), per?: Guinea ranks 112th and Sierra Leone ranks 109th of 203 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Guinea vs Sierra Leone: Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-total-excluding-lulucf-mt-co2e-per-square-kilometre/guinea/sierra-leone/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-total-excluding-lulucf-mt-co2e-per-square-kilometre/guinea/sierra-leone/">Guinea vs Sierra Leone: Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per</a> — Statizoid

About this data

Indicator: Methane (CH4) emissions (total) excluding LULUCF (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: 250 places, 12,804 data points, 1970–2023
Last refreshed: 21 September 2026

Methane (CH4) emissions (total) excluding LULUCF (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.