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A horizontal temperature gradient may occur, and hence air density variations, where air velocity changes. An example: the speed of the jet stream is not constant along its length; additionally air temperature and hence density will vary between the air within the jet stream and the air outside. Cirrus clouds often associated with clear-air ...
"Every time a pilot tries to go around turbulence, it adds to the workload of air traffic controllers and pilots. Zach Wichter is a travel reporter for USA TODAY based in New York. You can reach ...
It appears the Boeing 777-300 encountered clear air turbulence over the Bay of Bengal, south of the southern tip of Myanmar, just before 9am British time. A turn towards Bangkok and a rapid ...
Clear-air turbulence can cause aircraft to plunge and so present a passenger safety hazard that has caused fatal accidents, such as the death of one passenger on United Airlines Flight 826 in 1997. [ 47 ] [ 48 ] Unusual wind speed in the jet stream in late February 2024 pushed commercial jets to excess of 800 mph (1,300 km/h; 700 kn) relative ...
Data from turbulence prediction website Turbli, which has analysed around 150,000 routes, shows the most turbulent journeys of 2023. Routes are ranked according to “eddy dissipation rate ...
In meteorology the Ellrod index is a technique for forecasting clear-air turbulence (CAT). It is calculated based on the product of horizontal deformation and vertical wind shear derived from numerical model forecast winds aloft. The deformation predictors are calculated using following information. Shearing deformation:
Customers may need to brace themselves for increased air turbulence while flying as severe storms and stronger jet streams driven by climate change could make bumpy rides more frequent. A ...
Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, [2] which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, [3] on a constant pressure surface of 300 or 250 hPa show where the jet stream is located.