| 成都双流机场“7.9”低空风切变天气过程分析 |
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| 引用本文： | 赵润华,沈宏彬,李跃春. 成都双流机场“7.9”低空风切变天气过程分析[J]. 高原山地气象研究, 2011, 31(2): 35-38. DOI: 10.3969/j.issn.1674-2184·2011.02.006 |
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| 作者姓名： | 赵润华 沈宏彬 李跃春 |
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| 作者单位： | 西南空管局气象中心, 成都 610202 |
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| 摘 要： | 利用多普勒雷达对2010年7月9日发生在成都双流机场的两次低空风切变飞行事件进行分析, 这两次低空风切变过程是由中尺度对流系统 (MCS) 产生的阵风锋和下沉气流造成的。利用实时的多普勒气象雷达和地面自动观测数据, 确定阵风锋的传播方向和速度, 估计阵风锋引起的风切变发生的时段和位置;多普勒反射率因子的形态及多普勒速度图像能有效判断下沉气流的区域, 对下沉气流造成的风切变有很好的指示和预警作用。
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| 关 键 词： | 低空风切变 阵风锋 下沉气流 |
| 收稿时间： | 2011-02-16 |
Analysis of a Low -Level Wind Shear Weather Process at Chengdu Airport |
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| ZHAO Runhua,SHEN Hongbing,LI Yuechun. Analysis of a Low -Level Wind Shear Weather Process at Chengdu Airport[J]. Journal of Sichuan Meteorology, 2011, 31(2): 35-38. DOI: 10.3969/j.issn.1674-2184·2011.02.006 |
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| Authors: | ZHAO Runhua SHEN Hongbing LI Yuechun |
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| Affiliation: | Southwest Meteorological Center of Civil Aviation Traffic Management,Chengdu,610202 |
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| Abstract: | Low-level wind shear incidences are always related to thunderstorms.An analysis of two wind shear cases at Chengdu Shuangliu Airport on Jul 9th, 2010 with Doppler radar showed that they were caused by a gust front and a sink airflow of Mesoscale Convective Systems (MCS) respectively.Using real-time data from the terminal Doppler radar and auto weather observation stations, we can calculate the speed and height of the gust front, and forecast the time and location of the low-level wind shear.Doppler images of reflectivity and speed can determine the region caused by the downdraft flow, and they are valuable for the identifying and warning of low-level wind shears. |
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