How many years of comparable data are there for Hong Kong and Norway?

55 years are reported by both, from 1970 to 2024.

Where does this data come from?

Statizoid (derived), published as Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per capita. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Hong Kong vs Norway: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per

Hong Kong

0 Mt CO2e per person

in 2024

Norway

0 Mt CO2e per person

in 2024

Hong Kong rank

30th

Norway rank

33rd

Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per over time

Hong Kong
Norway

How they compare

Hong Kong currently reports 0 Mt CO2e per person against 0 Mt CO2e per person in Norway, a difference of 0 Mt CO2e per person.

The two have swapped places 7 times across 55 shared years of data; in 1970 it was Norway ahead.

Hong Kong ranks 30th and Norway ranks 33rd of 194 countries.

Across the 6 decades both report, Hong Kong averaged higher in 1 and Norway in 5.

Head to head by decade

Decade	Hong Kong	Norway	Difference	Ahead
1970s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Norway
1980s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Norway
1990s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong
2000s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Norway
2010s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Norway
2020s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Norway

Averages of every year both report within each decade.

Frequently asked questions

Which has higher nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per, Hong Kong or Norway?: Hong Kong, at 0 Mt CO2e per person against 0 Mt CO2e per person in Norway as of 2024.
What is the difference in nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per between Hong Kong and Norway?: 0 Mt CO2e per person, with Hong Kong ahead.
How many years of comparable data are there for Hong Kong and Norway?: 55 years are reported by both, from 1970 to 2024.
How do Hong Kong and Norway rank globally for nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per?: Hong Kong ranks 30th and Norway ranks 33rd of 194 countries.
Where does this data come from?: Statizoid (derived), published as Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per capita. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Hong Kong vs Norway: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 18 September 2026, from https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-transport-energy-mt-co2e-per-capita/hong-kong-sar-china/norway/

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<a href="https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-transport-energy-mt-co2e-per-capita/hong-kong-sar-china/norway/">Hong Kong vs Norway: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per</a> — Statizoid

About this data

Indicator: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per capita
Unit: Mt CO2e per person
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 241 places, 13,255 data points, 1970–2024
Last refreshed: 18 September 2026

Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e) divided by Population, total, matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.