Clear air turbulence over South Africa

被引：4

作者：

de Villiers, MP

van Heerden, J

机构：

[1] S African Weather Bur, Pretoria, South Africa

[2] Univ Pretoria, Dept Civil Engn, ZA-0002 Pretoria, South Africa

来源：

METEOROLOGICAL APPLICATIONS | 2001年 / 8卷 / 01期

关键词：

Air;

D O I：

10.1017/S1350482701001104

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

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 CA T 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.

引用

页码：119 / 126

页数：8