| “2.23”昆明长水机场低空风切变分析及可预报时效估计 |
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| 引用本文： | 林莉,袁振,黄盛军,等.“2.23”昆明长水机场低空风切变分析及可预报时效估计[J].高原山地气象研究,2018,38(1):42-47. |
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| 作者姓名： | 林莉 袁振 黄盛军 等 |
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| 作者单位： | 1. 民航西南空管局气象中心, 成都 610202; |
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| 基金项目： | 西南空管局"复杂天气预报预警系统开发与示范" |
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| 摘 要： | 随着航空事业的发展,飞机性能得到提高,但低空风切变仍然对航空安全构成威胁,为了解其发展规律,就昆明长水机场2017年2月23日发生的四次低空风切变进行了特征分析,揭示了风切变产生的水平及垂直风场的调整过程。分析发现,昆明机场特殊的地理位置造成冷锋推进速度缓慢;冷锋过境时,跑道两端出现风向和风速的不连续,造成跑道两端风向和风速均无法满足运行标准,导致跑道关闭;冷锋过境后,在跑道上60m决断高度附近形成水平风的垂直风切变,造成飞机复飞,对飞行安全造成较大影响。跑道道面上的风切变空间尺度小、存在时间长、而且风切变发生高度较低,并随时间变化,结合自动观测系统及风廓线雷达能更好的了解冷锋型风切变的特征,可以为航空飞行安全提供更精细化的服务。
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| 关 键 词： | 低空风切变 自动观测资料 风廓线雷达 |
| 收稿时间： | 2018-03-05 |
Analysis and Prediction of "2.23" Low-Lever Wind Shear in Kunming Changshui Airport |
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| Affiliation: | 1. Meteorological Center of Southwest Regional Air Traffic Management Bureau of CAAC, Chengdu 610202, China;2. Yunnan Air Traffic Management Sub-Bureau. CAAC, Kunming 650200, China;3. Sichuan Weather Modification Office, Chengdu 610073, China |
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| Abstract: | With the development of the aviation industry, the aircraft performance is improved, But Low-level wind shear is still a threat to aviation safety. The characteristics of four low-level wind shear events at Kunming airport in February 23, 2017 were analyzed. The analysis found that, the special geographical location caused by the cold front speed is slow, the cold front, at both ends of the runway appeared in the wind direction and velocity discontinuity, caused by wind speed and direction at both ends of the runway are unable to meet operating standards, resulting in the runway closed, after the cold front, 60 m decision height is formed the strong vertical wind shear, causing the plane go around, resulting in a greater impact on flight safety.With automatic observation system and wind profile radar can better understand the characteristics of a Low-level wind shear, also provide more sophisticated services for aviation safety. |
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