Avoiding aircraft contrails could postpone aviation-related warming by a decade
A new study says that steering flights to avoid contrail formation could delay the warming impact of aviation by about ten years.
Transport & Environment released a study indicating that avoiding contrail formation could push back aviation’s warming contribution by roughly ten years, moving the effect from 2040 to 2050. The report states that contrails are responsible for about half of the aviation sector’s greenhouse-gas impact, representing roughly one to two percent of worldwide CO₂ emissions. Simple changes to flight paths at high altitude can prevent contrail creation without significantly increasing fuel consumption.
A test by Tuifly, using minor altitude and routing tweaks on a small share of its flights, showed minimal passenger-noticeable delays. The European Commission is currently debating free emission credits for airlines that manage to reduce contrail formation, and the study urges EU legislators to support this measure.
Why it matters
Reducing contrails offers a low-cost way to cut aviation’s climate impact and buy time for broader decarbonisation efforts.
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