clear-air turbulence


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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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.clear-air turbulence - strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdrafts
turbulence - instability in the atmosphere
References in periodicals archive ?
Up the best part of 100 on Monday, down nearly 200 yesterday, the stock market has run into some clear-air turbulence.
Looking to keep passengers safe when airplanes are jarred by clear-air turbulence, NASA is working on a warning system that would give pilots time to change course or get travelers belted in.
His work on the scattering of blue-green light by a turbulent medium led to a scheme for detection of clear-air turbulence.