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clear-air turbulence ['klɪə 'ɛə 'tə:bjuləns]
meteorol. turbulencia de aire claro; turbulencia en aire claro
tech. turbulencia de altura; turbulencia en aire despejado
clear air turbulence
transp., avia. turbulencia en aire claro; turbulencia de aire limpio
 English thesaurus
clear air turbulence
avia., Canada Turbulence encountered in air where no clouds are present. This expression is commonly applied to high- level turbulence associated with wind shear WS. CAT is often encountered in the vicinity of the jet stream.
Clear - Air Turbulence: 1 phrase in 1 subject
Meteorology1