| 雷暴天气的多普勒雷达VWP资料特征分析 |
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| 引用本文： | 吴爱敏.雷暴天气的多普勒雷达VWP资料特征分析[J].甘肃气象,2009,27(2):177-180. |
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| 作者姓名： | 吴爱敏 |
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| 作者单位： | 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,甘肃,兰州,730020;甘肃省庆阳市气象局,甘肃,庆阳,745000 |
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| 基金项目： | 甘肃省气象局雷达资料的应用与开发项目 |
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| 摘 要： | 通过对西峰冰雹和强降水的2次强雷暴典型个例的分析,揭示了冰雹和强降水的多普勒雷达VWP资料的前兆特征.结果表明:强对流天气一般在干区(无云区,VWP图中表现为"ND")基本消失后发生,2次强对流天气过程的环境低层风切变明显,但冰雹的产生一般出现在风向随高度逆转有冷平流的环境中,而强降水出现在风向随高度顺转暖平流的环境中,并且这种风场的垂直变化特征维持时间长.强对流冰雹暴云西北气流从高层向下扩展到2.7 km,强降水西南水汽输送达到5.5 km高度以上,并且伴有低空急流存在.对2006年西峰发生的强对流雷暴天气进行分析,基本都存在风场的这种垂直分布特征,这一特征对短时临近预报有较好的指示意义.
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| 关 键 词： | 冰雹 暴雨 多普勒雷达 VWP产品分析 |
Analysis on Characteristic of Doppler Radar VWP Product in Strong Convective Weather Events |
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| WU Ai min.Analysis on Characteristic of Doppler Radar VWP Product in Strong Convective Weather Events[J].Gansu Meteorology,2009,27(2):177-180. |
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| Authors: | WU Ai min |
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| Institution: | 1.Institute of Arid Meteorology;CMA;Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province;Key Open Laboratory of Climatic Change and Disaster Reduction of CMA;Lanzhou 730020;China;2.Qingyang Meteorological Bureau of Gansu Province;Qingyang 745000;China |
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| Abstract: | The augural characteristic of Doppler radar VWP product was revealed by analyzing two typical cases of the hail and the strong rainfall occurred in Xifeng in 2006.The result indicated that the strong convection generally occurred after arid region(no cloud region,"ND" in the figure of VWP)vanishing,and the wind shear was obvious in lower level during two strong convective weather processes.The hail appeared in the cold advection environment with anti-clockwise wind direction shear,but the strong precipitati... |
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| Keywords: | hail rainstorm Doppler radar VWP |
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