The Smart Marty Sky Dispatch
No storm outside, so why is your plane shaking? How climate change could make your next flight bumpier
You experience turbulence sometimes in your flight even if the weather is clear outside, but why do those sudden bumpy jolts happen. Here's a complete analysis on what goes on.
New research is examining how and why turbulence can occur even when skies appear clear, linking some rough air to climate-influenced wind patterns rather than storms alone. The discussion centers on clear-air turbulence, which can arise without visible clouds and may be influenced by shifting atmospheric winds.
A study published in Scientific Reports used simulated routes between New York’s JFK and London Heathrow, analyzing atmospheric data from 1979 to 2022. Researchers compared routes optimized for shortest flight time against those designed to avoid clear-air turbulence, revealing that rerouting to avoid turbulence can add time to journeys.
The findings suggest that changing winds can alter travel times: shifting winds reduced fastest simulated round trips by roughly two minutes, while detours intended to dodge turbulence tended to erase or reverse those time gains. Eastbound flights showed that strong tailwinds could bring planes toward turbulence-prone areas, complicating route choices.
Climate-change considerations appear in longer-term analyses, with earlier research indicating a rise in the estimated annual duration of severe clear-air turbulence over the North Atlantic, by about 55% between 1979 and 2020. Researchers say these trends align with expected impacts of warming on upper-atmosphere wind shear, though attributing a single event to climate change remains inappropriate.
Airlines face an operational challenge: forecasts and data from multiple sources, plus improved pilot reporting, are needed to balance fuel efficiency, schedules, and turbulence exposure. The study notes that optimizing for wind advantages can come with increased turbulence risk, potentially affecting ticket prices indirectly through longer routes or more adjustments.
For passengers, the guidance from the aviation authorities remains consistent: stay seated with seat belts fastened during turbulence, follow crew instructions, and keep baggage stowed to minimize injury risks. The broader implications for how airlines plan routes and manage flying time under changing atmospheric conditions continue to be studied.