干旱气象 ›› 2021, Vol. 39 ›› Issue (5): 775-784.DOI: 10.11755/j.issn.1006-7639(2021)-05-0775

• 论文 • 上一篇    下一篇

2014—2017年石家庄正定国际机场低空风切变特征及天气形势分析

吴丹1(),李美琪1,郭蕊1,贾小卫1,刘浩1,柳泉2   

  1. 1.河北省气象服务中心,河北 石家庄 050021
    2.中国民用航空华北地区空中交通管理局河北分局,河北 石家庄 050802
  • 收稿日期:2020-10-22 修回日期:2021-03-17 出版日期:2021-10-30 发布日期:2021-11-08
  • 作者简介:吴丹(1990— ),女,硕士,主要从事专业气象服务工作. E-mail: wudan9009@163.com
  • 基金资助:
    河北省气象局科研开发项目(19ky07)

Low-level Wind Shear and Its Weather Situation at Shijiazhuang Zhengding International Airport from 2014 to 2017

WU Dan1(),LI Meiqi1,GUO Rui1,JIA Xiaowei1,LIU Hao1,LIU Quan2   

  1. 1. Hebei Meteorological Service Center, Shijiazhuang 050021, China
    2. Hebei Branch of North Air Traffic Management Bureau, CAAC, Shijiazhuang 050802, China
  • Received:2020-10-22 Revised:2021-03-17 Online:2021-10-30 Published:2021-11-08

摘要:

采用2014—2017年河北石家庄正定国际机场的31次低空风切变航空记录、地面观测资料及同期NCEP/NCAR再分析资料,对正定国际机场低空风切变特征及发生低空风切变的天气形势进行统计分析。结果表明:2014—2017年正定国际机场低空风切变主要出现在午后和傍晚,14:00为峰值;春季最多,夏季次之;2015年低空风切变出现次数最多。石家庄正定国际机场出现低空风切变的天气形势主要有西北气流型、低涡型、西风槽型和横槽型,其中西北气流型出现低空风切变次数最多,且多在春冬季,春季最多,另外低涡型的对流天气易出现低空风切变。低空风切变预报时要多关注西北气流天气形势下的3 h和1 h正变压及负变温以及低涡天气形势下短时间内的气压和气温变化。

关键词: 正定国际机场, 低空风切变, 天气形势

Abstract:

Based on 31 aviation records of low-level wind shear, surface observational data at Shijiazhuang Zhengding international airport of Hebei Province and NCEP/NCAR reanalysis data from 2014 to 2017, the characteristics of low-level wind shear and corresponding weather situations were analyzed. The results show that the low-level wind shear mainly occurred in the afternoon and nightfall, with the peak at 14:00 BST. The majority of low-level wind shear events occurred in spring, and the low-level wind shear events occurred most in April. The number of low-level wind shear events at Zhengding international airport was the highest in 2015. The mainly weather situations which were conducive to occurrence of low-level wind shear events were northwest airflow type, vortex type, west wind trough type and horizontal trough type. Furthermore, low-level wind shear occurred most under the weather situation of northwest airflow type, especially in spring and winter. The convective weather under the vortex weather situation was prone to occurrence of low-level wind shear. In addition, more attention should be paid on 3 hours and 1 hour anallobaric and negative temperature variation under the northwest airflow weather situation, as well as allobaric and variable temperature in a short time under the vortex weather situation for forecasting low-level wind shear.

Key words: Zhengding international airport, low-level wind shear, weather situation

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