| 一次台风外围雨带多普勒天气雷达回波及风场结构分析 |
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| 引用本文： | 闵爱莲,牛生杰,雷恒池,吴玉霞,张晓庆.一次台风外围雨带多普勒天气雷达回波及风场结构分析[J].气象科学,2008,28(6):619-624. |
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| 作者姓名： | 闵爱莲 牛生杰 雷恒池 吴玉霞 张晓庆 |
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| 作者单位： | 1. 南京信息工程大学,大气物理与大气环境重点实验室,南京210044
2. 中国科学院,大气物理研究所,北京10029 |
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| 基金项目： | 国家自然科学基金重点项目
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| 摘 要： | 使用常规天气资料、卫星云图和长春c波段多普勒雷达资料对2004年7月5日发生在吉林省的一次典型台风外围雨带降水天气过程进行了分析.可看出两种尺度云系的相互作用,整个降水雨带为明显的旋转西进过程.多普勒径向速度图上,低层辐合高层辐散的配置有利于降水的发生发展.另外,低层由于存在摩擦,受台风雨带影响较小,而中高层受台风中α尺度系统和中B尺度雨团的共同影响,两者风场的叠加造成低层偏东风到高层东北风的风向变化.可提高预报的准确率,为人工增雨决策提供可靠依据.
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| 关 键 词： | 多普勒雷达 台风外围雨带 回波强度 径向速度 |
| 收稿时间： | 2007/6/25 0:00:00 |
Analysis on Doppler radar echo and wind field structure of a precipitation in the spiral rain band of a typhoon |
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| Min Ailian,Niu Shengjie,Lei Hengchi,Wu Yuxia and Zhang Xiaoqing.Analysis on Doppler radar echo and wind field structure of a precipitation in the spiral rain band of a typhoon[J].Scientia Meteorologica Sinica,2008,28(6):619-624. |
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| Authors: | Min Ailian Niu Shengjie Lei Hengchi Wu Yuxia and Zhang Xiaoqing |
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| Affiliation: | Min Ailian1 Niu Shengjie1 Lei Hengchi2 Wu Yuxia2 Zhang Xiaoqing2(1 Key Laboratory of Atmospheric Physics & Environment,Nanjing University of Information Science & Technology,Nanjing 210044)(2 Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029) |
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| Abstract: | This typical precipitation which took place in the spiral rain band of a typhoon on July 5,2004 in Jilin province was analyzed by using conventional weather data,satellite cloud images and 5 cm Doppler radar in Changchun.We can see the interaction between two cloud systems of different scales and the obvious process of the whole rain band that circumvolves moves towards the west.And on Doppler radial velocity images,the configuration of low level convergence and high level divergence is propitious to happen... |
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| Keywords: | Doppler radar Typhoon\'s spiral rain band Echo intensity Radial velocity |
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