clear-air turbulence

(klîr′âr′)n. Abbr. CAT Atmospheric turbulence that occurs under tranquil and cloudless conditions and subjects aircraft to strong updrafts and downdrafts.

Thesaurus

Noun

clear-air turbulence - strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdraftsturbulence - instability in the atmosphere

clear-air turbulence

[‚klir ′er ′tərb·yə·ləns] (meteorology) A meteorological phenomenon occurring in the upper troposphere and lower stratosphere, in which high-speed aircraft are subject to violent updrafts and downdrafts. Abbreviated CAT.

clear-air turbulence (CAT)

Turbulence in clear air, which is not a result of the presence of clouds or thermal heating of the ground. It appears to arise from an internal function of the atmosphere resulting from wind shear and perhaps temperature shear. Clear-air turbulence is generally associated with jet streams, although it can occur at lower levels and outside the jet streams. Clear air turbulence may also be experienced above the mountain waves and thunderstorms.

clear-air turbulence

noun

Words related to clear-air turbulence

noun strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdrafts

Related Words

turbulence

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