| 多普勒天气雷达识别和预警下击暴流 |
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| 引用本文： | 赵东彦,白洁.多普勒天气雷达识别和预警下击暴流[J].气象科技,2007,35(5):631-636. |
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| 作者姓名： | 赵东彦 白洁 |
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| 作者单位： | 1. 解放军理工大学气象学院,南京,211101;航空气象防化研究所,北京,100085
2. 航空气象防化研究所,北京,100085 |
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| 摘 要： | 发生在机场周围的下击暴流,对飞机起降安全构成重大威胁。多普勒天气雷达以其高时空分辨率成为监测和预警下击暴流的有力工具。对国内外利用多普勒天气雷达研究下击暴流的现状进行了综述,包括下击暴流的基本概念、回波特征以及目前国内外主要算法:基于切变段法、图像处理法和线性判别分析法。最后对多普勒天气雷达识别和预警下击暴流的研究现状进行了总结,为国内开展这方面研究提供参考和借鉴。
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| 关 键 词： | 下击暴流 多普勒天气雷达 识别 预警 |
| 收稿时间： | 2006/10/16 0:00:00 |
| 修稿时间： | 2006-10-16 |
Review of Researches on Identification and Warning of Downbursts with Doppler Radar |
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| Zhao Dongyan and Bai Jie.Review of Researches on Identification and Warning of Downbursts with Doppler Radar[J].Meteorological Science and Technology,2007,35(5):631-636. |
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| Authors: | Zhao Dongyan and Bai Jie |
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| Institution: | 1 Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101; 2 Beijing Aviation Meteorological Institute, Beijing 100085 |
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| Abstract: | The destructive gusts and wind shear caused by downbursts are great threats to human's daily life and the taking off or landing of planes.Doppler radar plays important roles on monitoring and predicting downbursts for its high temporal and spatial resolution.The current status of researches on downburst monitoring with Doppler radar both at home and abroad is summarized and the prospects are discussed.Introduction is also made to the basic concepts and echo features of downbursts,as well as the main algorithms used presently,including the shear-segment method,image-processing method,and linear discriminant analysis. |
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| Keywords: | downburst Doppler radar identification warning |
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