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complete lost of control. >> reporter: so-called clear air turbulence has only gotten more severe over the decades. >> it is increasing, and it is because of climate change. so we know that the wind sheer in the jet stream is now 15% stronger than it was when satellites first began observing it in the 1970s. >> reporter: researcher paul williams predicts turbulence will get two to three times worse in the years to come affecting flights at hig altitudes in the northern hemisphere >> there has been no notable increased in the jet stream winds, but what we are seeing is the differentiating in height, that's when you get the clear air turbulence it is invisible to radar most pilots rely on fellow pilots' reports to know where it is >> imagine the air flow over this wing experiencing a sudden
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now 15% stronger than it was when satellites first began observing it in the 1970s. >> reporter: and researcher paul williams predicts turbulence will get two to three times worse in the years to come affected flights at high altitudes in the northern hemisphere >> there has been no noticeable increase in the jet stream winds across the northern hemisphere what we are seeing is that the differentiating in height, that's where we're seeing the winds changing different directions and that's when you get the clear turbulence and bumpy flights. >> reporter: clear air turbulence is invisible to radar. most pilots rely on fellow pilots to know where it is. >> imagine the air flow over this wing experiencing a sudden updraft. this wing will be pushed up, violently and instantaneously and the airplane will tilt to the left. >> reporter: flight attendants who are up and about suffer 78% of the injuries. >> skies have gotten more turbulent and during the course of my 26-year career, turbulence
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of his career. that�*s all from myself paul scott and the sportsday. we�*ll have more throughout the evening. hello, pressure has been building through the weekend but also with it a much moister air flow bringing a lot of cloud across the uk today, the cloud has been thick enough for patchy light rain and drizzle, and we will keep some of that going through this evening and overnight, initially across parts of southern scotland into northern england, the midlands, maybe east anglia by the end of the night. could see some clearer skies across kent for a time but for most a generally cloudy night, but not as cold as last night. temperatures generally between five and 10 celsius, perhaps two or three if we see clearer skies developing for long enough across parts of kent. this is how we start the new week with high pressure firmly in charge and we will keep that area of high
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