SHEN Yan-ling,Wang Dong-hai,Gong Yuan-fa.A Statistical Analysis of the Aircrafts Turbulence Properties in Winter over China[J].Journal of Chengdu University of Information Technology,2017,(04):426-432.[doi:10.16836/j.cnki.jcuit.2017.04.013 ]
中国冬季飞机颠簸的统计分析
- Title:
- A Statistical Analysis of the Aircrafts Turbulence Properties in Winter over China
- 文章编号:
- 2096-1618(2017)04-0426-07
- Keywords:
- meteorology; aviation meteorology; aircraft turbulence; China winter; statistical analysis; turbulence index
- 分类号:
- P496
- 文献标志码:
- A
- 摘要:
- 飞机颠簸是航空气象主要的特征之一,也是航空气象预报的重点和难点。针对飞机颠簸在中国冬季的特征,以及为验证哪种颠簸指数的诊断效果较好,利用2012-2015年中国地区内PIREPs飞机报资料,采用统计分析的方法分析颠簸发生的时空分布,计算颠簸发生时不同指数的情况。研究结果表明,冬季大部分颠簸是由于急流引起的,并且中国西南、东部地区发生颠簸较多。飞机颠簸在6000 m以上的高空发生次数较多。Ellord指数、MOS-CAT指数在中国区域内诊断冬季飞机颠簸效果较好。
- Abstract:
- Based on the PIREPs data in recent years(2012-2015), a statisticanalysis has been launched of the aircrafts turbulence characteristics in different region of China.In order to verify which diagnosis index is better, several turbulence indices, such as Ellrod Index, MOS-CAT Index and horizontal wind shear indexwere calculated by ERA-intrim data and the indexes were verified. Our work comes to the following conclusions:Jet stream is the main cause of aircraft turbulence,and most of turbulences occurred in eastern and Southwestern China in winter; The majority of turbulence are higher than 6000 m; the Ellrod Index and the MOS-CAT aresuitable for turbulence forecasting over China.
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备注/Memo
收稿日期:2017-03-23