How many years of comparable data are there for Ireland 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 from Fugitive Emissions (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Ireland vs Sierra Leone: Methane (CH4) emissions from Fugitive Emissions (Energy) (Mt CO2e)

Ireland

0 Mt CO2e per square kilometre

in 2023

Sierra Leone

0 Mt CO2e per square kilometre

in 2023

Ireland rank

58th

Sierra Leone rank

57th

Methane (CH4) emissions from Fugitive Emissions (Energy) (Mt CO2e) over time

Ireland
Sierra Leone

How they compare

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

That makes Sierra Leone's figure about 1.1 times Ireland's.

The two have swapped places 5 times across 54 shared years of data; in 1970 it was Ireland ahead.

Ireland ranks 58th and Sierra Leone ranks 57th of 192 countries.

Across the 6 decades both report, Ireland averaged higher in 4 and Sierra Leone in 2.

Head to head by decade

Decade	Ireland	Sierra Leone	Difference	Ahead
1970s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Ireland
1980s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Ireland
1990s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Ireland
2000s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Ireland
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 fugitive emissions (energy) (mt co2e), Ireland or Sierra Leone?: Sierra Leone, at 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Ireland as of 2023.
What is the difference in methane (ch4) emissions from fugitive emissions (energy) (mt co2e) between Ireland and Sierra Leone?: 0 Mt CO2e per square kilometre, with Sierra Leone ahead.
How many years of comparable data are there for Ireland and Sierra Leone?: 54 years are reported by both, from 1970 to 2023.
How do Ireland and Sierra Leone rank globally for methane (ch4) emissions from fugitive emissions (energy) (mt co2e)?: Ireland ranks 58th and Sierra Leone ranks 57th of 192 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) emissions from Fugitive Emissions (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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Ireland vs Sierra Leone: Methane (CH4) emissions from Fugitive Emissions (Energy) (Mt CO2e). Statizoid, drawing on Statizoid (derived). Retrieved 22 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-from-fugitive-emissions-energy-mt-co2e-per-square-kilometre/ireland/sierra-leone/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-from-fugitive-emissions-energy-mt-co2e-per-square-kilometre/ireland/sierra-leone/">Ireland vs Sierra Leone: Methane (CH4) emissions from Fugitive Emissions (Energy) (Mt CO2e)</a> — Statizoid

About this data

Indicator: Methane (CH4) emissions from Fugitive Emissions (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: 239 places, 12,273 data points, 1970–2023
Last refreshed: 22 September 2026

Methane (CH4) emissions from Fugitive Emissions (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.