| 庆阳2次强对流天气过程的新一代雷达资料对比分析 |
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| 引用本文： | 吴爱敏,薛璟轩,白爱军,张洪芬.庆阳2次强对流天气过程的新一代雷达资料对比分析[J].甘肃气象,2007,25(2):43-49. |
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| 作者姓名： | 吴爱敏 薛璟轩 白爱军 张洪芬 |
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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，甘肃省庆阳市气象局，甘肃省庆阳市气象局，甘肃省庆阳市气象局 甘肃兰州730020，甘肃省庆阳市气象局甘肃庆阳745000，甘肃省庆阳市气象局甘肃庆阳745000，甘肃庆阳745000，甘肃庆阳745000，甘肃庆阳745000 |
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| 摘 要： | 通过新一代天气雷达观测,利用基本数据产品和物理量产品,分析了庆阳市2005年5月30日强冰雹过程和7月1～2日连续暴雨过程中雷达回波强度、速度、云顶高度、垂直积分液态含水量的特征,并将2次过程的雷达产品特征进行了对比分析。结果表明:冰雹和连续性暴雨回波反射率因子差异大,冰雹回波发展移动快,达50 km/h,中心强度超过50 dBZ;回波移动前沿梯度大,速度图上出现速度模糊,雷达探测出中气旋,云顶高度超过12 km;降雹前VIL出现跃增,中心超过20 kg/m2都有降雹。而连续暴雨强度只有25～35 dBZ,移速慢,零速度线分布有规律,能反映低空急流和冷暖气团移动规律,云顶高度低,仅为5～8 km,降水过程中VIL变化小。
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| 关 键 词： | 冰雹 暴雨 多普勒雷达产品 对比分析 |
| 文章编号： | 1006-7639（2007）-02-0043-07 |
| 修稿时间： | 2006-06-302006-12-15 |
Comparative Analysis of Two Strong Covective Weather Processes by New Generation Radar Data in Qingyang |
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| WU Aimin,XUE Jingxuan,BAI Aijun,ZHANG Hongfen.Comparative Analysis of Two Strong Covective Weather Processes by New Generation Radar Data in Qingyang[J].Gansu Meteorology,2007,25(2):43-49. |
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| Authors: | WU Aimin XUE Jingxuan BAI Aijun ZHANG Hongfen |
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| Institution: | 1. Institute of Arid Meteorology, CMA, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Prouince,key open laboratory of Arid climatic change and Disaster Reduction of CAM Lanzhou 730020, China; 2. Qingyang Meteorological Bureau of Gansu Province, Qingyang 745000, China |
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| Abstract: | Based on the Doppler radar data,the characteristics of the echo intensity,velocity,top height and vertically integrated liquid water(VIL) of the strong hail on May 30 and the rainstorm on July 1-2 in 2005 in Qingyang region were analyzed,and comparison between these two weather events was carried out.Results show that difference of the reflectivity between the hail and rainstorm was great;the hail echo developed and moved quickly at the rate of 50 km/h,and the central intensity of hail echo exceeded 50 dBZ;there was some speed fuzzy area on velocity map,and middle cyclone was detected by the radar;the top of cloud was more than 12 km;VIL increased suddenly before hailfall,and hail occurred when VIL in central was over 20 kg/m2.While the echo intensity of the rainstorm was only 25-35 dBZ,and rainstorm echo moved slowly;the 0 speed line was regular and it can reflect the low level jet and development of air mass,and the top height of cloud was only 5-8 km and VIL changed little during rainfall process. |
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| Keywords: | hail rainstorm Doppler radar product comparative analysis |
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