Air traffic burns fuel that causes direct emissions of polluting substances with a greenhouse effect: carbon dioxide (CO2), nitrogen oxide (N2O), as well as several other pollutants such as carbon monoxide (CO), sulphur Dioxide (SO2), nitrate oxides (NOx), hydrocarbons (HC) that cause or contribute to air pollution at the local or regional level.
Emissions are also divided into those generated by domestic and international flights.
Emissions of domestic flights are emissions generated by passenger and freight traffic flights that take off and land in the same country (commercial, private, agricultural, etc.).
International flight operations (international bunkers) are airline flights that take off from one country and land in another country.
Although, all emissions from fuels used for international aviation (bunkers) and multilateral operations pursuant to the Charter of UN are excluded from national totals, and reported separately as memo items, to facilitate comparison, Table 1 shows both local and international flights, including total amount of fuel converted into the energy unit of Tera Joule (TJ) to Gigagram (Gg) of fuel.
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