"Scientists warn that flights departing from UK airports including London City, Heathrow and Gatwick will get louder due to climate change. The experts from the University of Reading say the warmer air resulting from climate change reduces the lift force on an aircraft shortly after take-off. This reduces the aircraft's climb angle, keeping aircraft closer to the ground for longer periods after departure."
"Because of the shorter distance between houses and newly-departed planes, residents near airports will be increasingly plagued by the annoying hum of a jet engine. Professor Paul Williams, study author at the University of Reading, warns of 'unwelcome consequences for those who live near airports and are impacted by noise'. The study shows global warming will make commercial flights more problematic for people on the ground, not just those in the air."
"'Together with increased turbulence and more airport flooding, we can now add noisier flights to the growing list of ways climate change is affecting aviation,' he said. The study focused on the impacts of climate change on aircraft noise at 30 European airports across June, July and August. The airports studied included three London airports, as well as Dublin Airport, Brussels Airport, Amsterdam Airport Schiphol, Lisbon Portela Airport and Zurich Airport."
Warmer air from climate change reduces air density and thus reduces lift shortly after take-off, causing aircraft to achieve lower climb angles. Lower climb angles keep departing aircraft closer to the ground for longer, increasing ground-level noise experienced by residents near airports. Average climb-angle reductions of one to three percent are projected, with extreme hot days producing decreases up to 7.5 percent. Modeling considered the Airbus A320 and modelled effects at multiple European airports, including London City, Heathrow and Gatwick, showing that noisier departures will compound aviation impacts alongside increased turbulence and airport flooding.
Read at Mail Online
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