Hong Kong vs Singapore: Nitrous oxide (N2O) emissions from Industrial Processes (Mt CO2e)

Hong Kong
0.0001 Mt CO2e per square kilometre
in 2023
Singapore
0.0002 Mt CO2e per square kilometre
in 2023
Hong Kong rank
6th
Singapore rank
3rd

Nitrous oxide (N2O) emissions from Industrial Processes (Mt CO2e) over time

  • Hong Kong
  • Singapore
00.0050.010.015197019962023

How they compare

Singapore currently reports 0.0002 Mt CO2e per square kilometre against 0.0001 Mt CO2e per square kilometre in Hong Kong, a difference of 0.0001 Mt CO2e per square kilometre.

That makes Singapore's figure about 1.7 times Hong Kong's.

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

Hong Kong ranks 6th and Singapore ranks 3rd of 203 countries.

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

Head to head by decade

Decade Hong Kong Singapore Difference Ahead
1970s 0.0001 Mt CO2e per square kilometre 0.0001 Mt CO2e per square kilometre 0 Mt CO2e per square kilometre Singapore
1980s 0.0002 Mt CO2e per square kilometre 0.0002 Mt CO2e per square kilometre 0 Mt CO2e per square kilometre Singapore
1990s 0.0003 Mt CO2e per square kilometre 0.0045 Mt CO2e per square kilometre 0.0042 Mt CO2e per square kilometre Singapore
2000s 0.0002 Mt CO2e per square kilometre 0.0033 Mt CO2e per square kilometre 0.0031 Mt CO2e per square kilometre Singapore
2010s 0.0002 Mt CO2e per square kilometre 0.0004 Mt CO2e per square kilometre 0.0003 Mt CO2e per square kilometre Singapore
2020s 0.0001 Mt CO2e per square kilometre 0.0002 Mt CO2e per square kilometre 0.0001 Mt CO2e per square kilometre Singapore

Averages of every year both report within each decade.

Frequently asked questions

Which has higher nitrous oxide (n2o) emissions from industrial processes (mt co2e), Hong Kong or Singapore?
Singapore, at 0.0002 Mt CO2e per square kilometre against 0.0001 Mt CO2e per square kilometre in Hong Kong as of 2023.
What is the difference in nitrous oxide (n2o) emissions from industrial processes (mt co2e) between Hong Kong and Singapore?
0.0001 Mt CO2e per square kilometre, with Singapore ahead.
How many years of comparable data are there for Hong Kong and Singapore?
54 years are reported by both, from 1970 to 2023.
How do Hong Kong and Singapore rank globally for nitrous oxide (n2o) emissions from industrial processes (mt co2e)?
Hong Kong ranks 6th and Singapore ranks 3rd of 203 countries.
Where does this data come from?
Statizoid (derived), published as Nitrous oxide (N2O) emissions from Industrial Processes (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Hong Kong vs Singapore: Nitrous oxide (N2O) emissions from Industrial Processes (Mt CO2e). Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-industrial-processes-mt-co2e-per-square-kilometre/hong-kong-sar-china/singapore/

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<a href="https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-industrial-processes-mt-co2e-per-square-kilometre/hong-kong-sar-china/singapore/">Hong Kong vs Singapore: Nitrous oxide (N2O) emissions from Industrial Processes (Mt CO2e)</a> — Statizoid

About this data

Indicator
Nitrous oxide (N2O) emissions from Industrial Processes (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

Nitrous oxide (N2O) emissions from Industrial Processes (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.