| 多普勒雷达数值产品在火箭增雨效果分析中的应用 |
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| 引用本文： | 李红斌,何玉科,周德平,濮文耀.多普勒雷达数值产品在火箭增雨效果分析中的应用[J].气象科技,2007,35(2):269-273. |
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| 作者姓名： | 李红斌 何玉科 周德平 濮文耀 |
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| 作者单位： | 1. 辽宁省大连市人工影响天气办公室,大连,116001
2. 中国气象局沈阳大气环境研究所,沈阳,110016 |
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| 基金项目： | 中国气象局火箭增雨流动作业决策指挥系统新技术推广应用项目 |
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| 摘 要： | 采用新一代多普勒雷达基本数据和二次产品对2004-2005年大连地区实施火箭增雨作业的31个作业个例进行了统计分析,总结出利用雷达实时指挥作业其雷达回波几个主要参数随时间的变化规律。分析结果表明,对不同类型云作业后云体回波强度、垂直积分液态水含量均随时间增大,且最大值均出现在作业后20-30 min左右;回波顶高却产生了不同的变化特征,即积层混合云作业后顶高随时间增高,层状云顶高则出现先下降再增高的变化。该分析结果对采用雷达进行效果分析,科学选择再作业时机,充分开发空中云水资源具有实际的指导意义。
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| 关 键 词： | 人工增雨 效果分析 雷达数据产品 |
| 收稿时间： | 2005/10/20 0:00:00 |
| 修稿时间： | 2005年10月20 |
Application of Doppler Radar Numerical Products to Effectiveness Analysis of Precipitation Enhancement |
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| Li Hongbin,He Yuke,Zhou Deping and Pu Wenyao.Application of Doppler Radar Numerical Products to Effectiveness Analysis of Precipitation Enhancement[J].Meteorological Science and Technology,2007,35(2):269-273. |
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| Authors: | Li Hongbin He Yuke Zhou Deping and Pu Wenyao |
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| Institution: | Dalian Weather Modification Office, Liaoning Province, Dalian 116001;Dalian Weather Modification Office, Liaoning Province, Dalian 116001;Institute of Atmospheric Environment, CMA, Shenyang 110016;Dalian Weather Modification Office, Liaoning Province, Dalian 116001 |
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| Abstract: | A statistical analysis of 38 rain enhancement cases in Dalian of Liaoning Province is made based on the basic data and products of Doppler radar echo in last two years.The variation characteristics of primary echo parameters are summarized.It is shown that some radar echo parameters varied regularly with time.The radar echo intensity and VIL(Vertical Integrated Liquid water) after seeding became greater,and the maximum values appeared in 20 to 30 minutes after seeding.The evolutionary characteristics of cloud-top heights were different: the heights of stratus-cumulus mixing clouds increased,while the heights of stratiform clouds decreased at first and then increased.The results provide useful reference for the seeding effectiveness analysis with Doppler data and the scientific selection of seeding opportunity aiming at large-range and stable precipitation processes,as well as the sufficiency exploitation of air cloud-water resource. |
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| Keywords: | precipitation enhancement effectiveness analysis radar data product |
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