By changing the flying altitude by just couple of thousand feet on fewer than 2% of all scheduled flights, a study by a team of scientists at Imperial College London concludes that aviation's damage to the climate could be reduced by as much as 59%. [...]
"So if we were to stop producing contrails, the effect of contrails would go away the next day," says Marc Stettler, who worked on the new study. "It's a way that the aviation industry can really quickly address its impact on climate change." [...]
Andrew Heymsfield, senior scientist at the National Center for Atmospheric Research, tells CNN Travel that the findings make sense, but questions how they could be employed in everyday aviation scenarios. [...]
While the change, if adopted, would have lead to some reduction in emissions, it's unlikely to assuage climate campaigners who want the aviation sector to drastically reduce its carbon footprint. Air travel currently contributes to between 2-3% of all global CO2 emissions and this would remain an issue even if airplanes were flying at different altitudes.
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