Google and the UK think changing flights paths could cut down on climate change
Fortune The Associated Press ● Covered by 3 sources
Google and the UK are testing flight path tweaks over the North Atlantic to cut contrails. It’s a big airspace trial, not just one airline tinkering around the edges.
Based on reporting by Fortune, The Associated Press — read the original for the full story.
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Hundreds of commercial flights over the northeastern Atlantic are set to take small detours over the next two winters, in a test of whether tiny altitude changes can cut aviation’s climate impact. The British government has signed on, and Google UK is feeding in AI forecasts to spot where contrails are likely to form.
The trial sits inside the Shanwick Oceanic Control Area, a busy stretch of airspace between Europe and North America and a known contrail hotspot. When planes fly through cold, humid air, ice crystals can build around soot from the engines and leave those thin white trails behind. They look harmless. They aren’t.
Operation Blue Skies runs for 30 months, with test periods this winter and next. On about 20 to 40 days each winter, when traffic is lighter, air traffic controllers will direct some flights to shift by as much as 2,000 feet to avoid the right conditions for contrails. The government says these are minor changes that fit within normal flight operations, using standard control channels.
Roughly 10,000 flights are expected to pass through Shanwick during the tests, and hundreds of them would change route. Google’s technical lead for the project, Paul Hodgson, said that moving just 1% to 5% of flights would be enough to show a statistically significant drop in contrail formation across an airspace this size. That matters because contrails are estimated to account for 1% to 2% of Earth’s warming, and modelling suggests Shanwick is responsible for about 5% of that total.
This is bigger than the earlier airline-by-airline experiments. Google and American Airlines already said this year that its AI forecasting tool helped reduce the climate impact of some flights, but this trial is meant to show whether the idea works across an entire corridor, not just one operator. The UK is paying for more than half of the 5 million pound study, alongside partners including the Met Office, NATS, Contrails.org, Imperial College London and the University of Cambridge.
My take — AI-written commentary, not fact-checked reporting
This is the rare climate story that sounds boring and may actually matter. Aviation has spent years pretending efficiency tweaks will save it, while one of the clearest fixes is to simply stop flying through the worst air at the worst time. The industry loves big promises; airspace management is the grown-up version.
Read more about this at: Fortune