Aviation is responsible for around five percent of human-induced climate change
Climate-optimal routing involves re-routing aircraft to avoid regions of the atmosphere that are particularly climate-sensitive – for example, where particularly humid air causes long-lived and damaging contrails to form.that for a small increase in flight distance , the net climate impact of a flight can be reduced by around 20 percent.
Flight operators can also reduce the impact of their aircraft by flying in formation, with one aircraft flying 1-2 km behind the other. The follower aircraft “surfs” the lead aircraft’s wake, leading to a five percent reduction in both CO₂ and other harmful emissions. But flying in formation can reduce non-CO₂ warming too. When aircraft exhaust plumes overlap, the emissions within them accumulate. When NOₓ reaches a certain concentration, the rate of ozone production decreases, and the warming effect slows.
And when contrails form, they grow by absorbing the surrounding water vapor. In formation flight, the aircraft’s contrails compete for water vapor, making them smaller. Summing all three reductions, formation flight could slash climate impact by up toThe aviation industry has fixated on tackling carbon emissions. However, current plans for the industry to reach
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