Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per in Hong Kong
Hong Kong: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per was 0.0001 Mt CO2e per square kilometre in 2023. ◆ Volatile
Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per in Hong Kong, 1970–2023
Source: Statizoid (derived). Measured in Mt CO2e per square kilometre.
Analysis
In 2023, nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per in Hong Kong stood at 0.0001 Mt CO2e per square kilometre.
The figure is up 24.0% on the previous year and up 78.4% over ten years.
Over the whole period, nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per in Hong Kong peaked at 0.0004 Mt CO2e per square kilometre in 1999 and was at its lowest, 0 Mt CO2e per square kilometre, in 1974.
Hong Kong ranks 3rd of 194 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per in Hong Kong, year by year
| Year | Mt CO2e per square kilometre | Change |
|---|---|---|
| 1970 | 0 Mt CO2e per square kilometre | — |
| 1971 | 0 Mt CO2e per square kilometre | +0.0% |
| 1972 | 0 Mt CO2e per square kilometre | +14.5% |
| 1973 | 0 Mt CO2e per square kilometre | -4.8% |
| 1974 | 0 Mt CO2e per square kilometre | -8.9% |
| 1975 | 0 Mt CO2e per square kilometre | +7.3% |
| 1976 | 0 Mt CO2e per square kilometre | +16.3% |
| 1977 | 0 Mt CO2e per square kilometre | +5.5% |
| 1978 | 0 Mt CO2e per square kilometre | +11.3% |
| 1979 | 0 Mt CO2e per square kilometre | +133.3% |
| 1980 | 0 Mt CO2e per square kilometre | -13.5% |
| 1981 | 0 Mt CO2e per square kilometre | +16.7% |
| 1982 | 0.0001 Mt CO2e per square kilometre | +9.9% |
| 1983 | 0.0001 Mt CO2e per square kilometre | +4.0% |
| 1984 | 0.0001 Mt CO2e per square kilometre | -4.0% |
| 1985 | 0 Mt CO2e per square kilometre | -8.5% |
| 1986 | 0.0001 Mt CO2e per square kilometre | +33.6% |
| 1987 | 0.0001 Mt CO2e per square kilometre | -5.7% |
| 1988 | 0.0001 Mt CO2e per square kilometre | +22.9% |
| 1989 | 0.0001 Mt CO2e per square kilometre | -4.3% |
| 1990 | 0.0001 Mt CO2e per square kilometre | +14.2% |
| 1991 | 0.0002 Mt CO2e per square kilometre | +137.8% |
| 1992 | 0.0002 Mt CO2e per square kilometre | +10.1% |
| 1993 | 0.0002 Mt CO2e per square kilometre | +10.0% |
| 1994 | 0.0003 Mt CO2e per square kilometre | +7.6% |
| 1995 | 0.0002 Mt CO2e per square kilometre | -12.4% |
| 1996 | 0.0002 Mt CO2e per square kilometre | -28.9% |
| 1997 | 0.0002 Mt CO2e per square kilometre | +4.7% |
| 1998 | 0.0003 Mt CO2e per square kilometre | +72.6% |
| 1999 | 0.0004 Mt CO2e per square kilometre | +32.5% |
| 2000 | 0.0002 Mt CO2e per square kilometre | -45.7% |
| 2001 | 0.0002 Mt CO2e per square kilometre | -24.5% |
| 2002 | 0.0001 Mt CO2e per square kilometre | -26.9% |
| 2003 | 0.0001 Mt CO2e per square kilometre | -1.8% |
| 2004 | 0.0001 Mt CO2e per square kilometre | -40.1% |
| 2005 | 0.0001 Mt CO2e per square kilometre | +0.4% |
| 2006 | 0.0001 Mt CO2e per square kilometre | +2.9% |
| 2007 | 0.0001 Mt CO2e per square kilometre | +13.2% |
| 2008 | 0.0001 Mt CO2e per square kilometre | +3.6% |
| 2009 | 0.0001 Mt CO2e per square kilometre | +35.3% |
| 2010 | 0.0001 Mt CO2e per square kilometre | -9.3% |
| 2011 | 0.0001 Mt CO2e per square kilometre | -2.6% |
| 2012 | 0.0001 Mt CO2e per square kilometre | -3.0% |
| 2013 | 0.0001 Mt CO2e per square kilometre | -22.1% |
| 2014 | 0.0001 Mt CO2e per square kilometre | +4.2% |
| 2015 | 0.0001 Mt CO2e per square kilometre | +9.4% |
| 2016 | 0.0001 Mt CO2e per square kilometre | +18.9% |
| 2017 | 0.0001 Mt CO2e per square kilometre | +22.0% |
| 2018 | 0.0001 Mt CO2e per square kilometre | -0.3% |
| 2019 | 0.0001 Mt CO2e per square kilometre | +3.3% |
| 2020 | 0.0002 Mt CO2e per square kilometre | +34.9% |
| 2021 | 0.0002 Mt CO2e per square kilometre | -11.5% |
| 2022 | 0.0001 Mt CO2e per square kilometre | -29.3% |
| 2023 | 0.0001 Mt CO2e per square kilometre | +24.0% |
Hong Kong compared with similar countries
- Hong Kong's 0.0001 Mt CO2e per square kilometre is above the median for high income countries, which is 0 Mt CO2e per square kilometre, 68.3× the median. (71 countries reporting)
- Hong Kong's 0.0001 Mt CO2e per square kilometre is above the median for East Asia & Pacific, which is 0 Mt CO2e per square kilometre, 145.4× the median. (30 countries reporting)
Biggest year-on-year movements
Years where Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per in Hong Kong changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1991 | +137.8% | 0.0001 Mt CO2e per square kilometre | 0.0002 Mt CO2e per square kilometre |
| 1979 | +133.3% | 0 Mt CO2e per square kilometre | 0 Mt CO2e per square kilometre |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 0 Mt CO2e per square kilometre | 0 Mt CO2e per square kilometre | 0 Mt CO2e per square kilometre | 10 |
| 1980s | 0.0001 Mt CO2e per square kilometre | 0 Mt CO2e per square kilometre | 0.0001 Mt CO2e per square kilometre | 10 |
| 1990s | 0.0002 Mt CO2e per square kilometre | 0.0001 Mt CO2e per square kilometre | 0.0004 Mt CO2e per square kilometre | 10 |
| 2000s | 0.0001 Mt CO2e per square kilometre | 0.0001 Mt CO2e per square kilometre | 0.0002 Mt CO2e per square kilometre | 10 |
| 2010s | 0.0001 Mt CO2e per square kilometre | 0.0001 Mt CO2e per square kilometre | 0.0001 Mt CO2e per square kilometre | 10 |
| 2020s | 0.0001 Mt CO2e per square kilometre | 0.0001 Mt CO2e per square kilometre | 0.0002 Mt CO2e per square kilometre | 4 |
Countries ranked near Hong Kong
More environment data for Hong Kong
- Historical exposure to drought — Land soil moisture anomaly -5.98 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -5.54 Percentage change (2025)
- Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), annual 1.14 % change on previous year (2024)
- Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions (total) excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e) 8.23 % change on previous year (2024)
- Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Power Industry (Energy) (Mt CO2e), per 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Transport (Energy) (Mt CO2e), annual 13.39 % change on previous year (2024)
- Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per in Hong Kong?
- Nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per in Hong Kong was 0.0001 Mt CO2e per square kilometre in 2023, according to Statizoid (derived).
- What is the highest nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per recorded in Hong Kong?
- The highest recorded value was 0.0004 Mt CO2e per square kilometre in 1999.
- What is the lowest nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per recorded in Hong Kong?
- The lowest recorded value was 0 Mt CO2e per square kilometre in 1974.
- How does Hong Kong rank for nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per?
- Hong Kong ranks 3rd out of 194 countries with data for 2023.
- Is nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per rising or falling in Hong Kong?
- Over the last ten years it is up 78.4%. The long-run trend across the full record is volatile.
- Where does this Hong Kong data come from?
- The figures come from Statizoid (derived), published as part of Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per square kilometre. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 54 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Nitrous oxide (N2O) 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.
Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e) ÷ Land area (sq. km)
Computed from
- Nitrous oxide (N2O) emissions from Transport (Energy) EDGAR (Emissions Database for Global Atmospheric Research) Community GHG Database, Joint Research Centre (JRC) - European Commission
- Land area FAOSTAT, Food and Agriculture Organization of the United Nations (FAO)
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
Nitrous oxide (N2O) 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.