Jet fuel combustion is the main source of nanoparticle pollution in the Earth's atmosphere.
An aerosol is a colloid of fine solid particles or liquid droplets in air or another gas. Such examples include clouds, haze and air pollution, such as smog and smoke.
The majority of NOx leaves jet engines as NO, but a significant part of this oxidizes to NO2 when it reacts with ozone in the surrounding air.
Aerosols are very small particles that are suspended in the atmosphere.
Aircraft engines emit more than 1000 times more particles per kg of fuel compared to modern diesel cars (Euro V).
Jet fuel contains high concentrations of sulphur - about 1000 ppm. In comparison, the sulphur content in diesel fuel is 10 ppm, ie. approx. 100 times lower than that in jet fuel.
About 5 billion people use airplanes as a means of transport every year worldwide.
Sulphate injections are one of several "geoengineering" solutions to climate change being discussed by scientists. The data published in "Science" magazine suggests that this strategy would lead to a drastic thinning of the ozone layer.
Top registered airlines within the last month
Short lived trails
1 Asian Wings Airways
1 KLM Cityhopper
1 Turkish Airlines
Persistent non-spreading trails
1 British Airways
1 Danish Air
1 Norwegian Air Shuttle
Persistent spreading trails
5 Cayman Airways
4 Alaska Airlines
3 Delta Air Lines
2 American Airlines
2 British Airways
2 Southwest Airlines
2 United Airlines
1 Norwegian Air International
1 Suburban Air Freight