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基于相干多普勒激光雷达的北京机场春季低空风切变观测研究

Low-Level Wind Shear Observation at Beijing Capital International Airport Based on Coherent Doppler Lidar

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摘要

低空风切变极易对起降过程中的飞行器、风力发电机的结构产生破坏性影响。简要介绍了低空风切变及风切变的危害,详细介绍了相干多普勒激光 雷达的工作原理和低空风廓线反演算法,以及利用风廓线、风矢量图、风速梯度图等观测数据提取风切变的方法。分析了2015年春季北京首都机场 低空风切变个例发生的气象条件和风切变强度。实验结果表明相干多普勒测风激光雷达能有效探测分析低空风切变。

Abstract

Low-level wind shear can affect aircraft during taking-off and landing phases and the structure of wind turbines in disastrous ways. The principle and parameters of coherent Doppler lidar(CDL) were explained briefly and the method of retrieving wind profiles from line of sight (LOS) wind speed was introduced in detail. The data analysis is based on CDL configured at Beijing Capital International Airport (BCIA) in spring of 2015. Wind profiles time series and wind speed gradient were illustrated to identify the low-level wind shear. The results show that CDL is an effective tool to capture the low-level wind shear events.

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中图分类号:TN958;P407

DOI:10.3969/j.issn.1673-6141.2018.01.004

所属栏目:大气光学

基金项目:Supported by National Natural Science Foundation of China(国家自然科学基金, 41375016, 41471309), National High Technology Research and Development Program of China(国家863计划, 2014AA09A511)

收稿日期:2016-09-12

修改稿日期:2016-12-02

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作者单位    点击查看

张洪玮:中国海洋大学信息科学与工程学院海洋遥感研究所, 山东 青岛 266100
王琪超:中国海洋大学信息科学与工程学院海洋遥感研究所, 山东 青岛 266100
吴松华:中国海洋大学信息科学与工程学院海洋遥感研究所, 山东 青岛 266100

联系人作者:吴松华(wush@ouc.edu.cn)

备注:张洪玮 (1989-),男,山东烟台人,博士研究生,主要从事相干多普勒测风激光雷达和相干多普勒测速技术方面的研究。

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引用该论文

ZHANG Hongwei,WANG Qichao,WU Songhua. Low-Level Wind Shear Observation at Beijing Capital International Airport Based on Coherent Doppler Lidar[J]. Journal of Atmospheric and Environmental Optics, 2018, 13(1): 34-41

张洪玮,王琪超,吴松华. 基于相干多普勒激光雷达的北京机场春季低空风切变观测研究[J]. 大气与环境光学学报, 2018, 13(1): 34-41

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