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Clear air turbulence over South Africa

  • M P de Villiers (a1) and J van Heerden (a2)
Abstract

Clear air turbulence (CAT) at high altitude remains a hazard to aviation which can result in passenger injury and aircraft damage. Two limited surveys of CAT events over South Africa, 1993-1995 (inclusive) and 1998, are used to illustrate the most likely synoptic conditions under which CAT can be expected. A case study of CAT associated with an upper-air trough and a mountain wave is presented. The study also evaluates the effectiveness of the Ellrod Turbulence Index (ETI) derived from model data provided by the UK Met. Office. A forecast of ETI derived from the Global Spectral Model of the United States National Center for Environmental Prediction (NCEP) is also reviewed.

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Meteorological Applications
  • ISSN: 1350-4827
  • EISSN: 1469-8080
  • URL: /core/journals/meteorological-applications
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