contrails
Airlines are trying to curb the climate warming impact of contrails
As millions of Americans prepare to fly home for the holidays, their biggest planet-warming impact may not come from the carbon burned in their planes’ engines but the thin, wispy clouds that trail behind their flights.
American Airlines demonstrated contrail-reducing technology
Airliners can leave behind contrails—condensation trails—of ice crystals that form artificial clouds around particles in the planes’ exhaust. These clouds trap heat in the Earth’s atmosphere, and if we could reduce them, scientists believe that it could slow global warming.
Curbing contrails: a climate solution in the skies
What is climate-neutral aviation and how do we get there?
Emissions other than carbon dioxide – especially contrails, which are well known to have a warming effect – are responsible for two-thirds of aviation’s climate impact. But these emissions aren’t covered by current international climate agreements and other efforts to mitigate climate change.