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| 一次对流降水过程增雨催化时机的模拟分析和雷达识别 | |
| 引用本文： | 王斌,向玉春,张鸿雁.一次对流降水过程增雨催化时机的模拟分析和雷达识别[J].气象,2008,34(1):35-40. |
| 作者姓名： | 王斌 向玉春 张鸿雁 |
| 作者单位： | 1. 中国气象局武汉暴雨研究所,430074 2. 湖北省人工影响天气办公室 3. 湖北省气象局业务处 |
| 基金项目： | 科技部公益性研究专项基金 |
| 摘 要： | 为加深对对流云增雨催化机制的理解,避免催化指标的随意性,通过三维积云数值模拟和雷达加密探测资料分析相结合的方法,对发生在湖北省西北部多山地区的一次对流降水过程进行了增雨催化时机的分析和识别.首先运用三维积云模式,通过催化模拟敏感试验,得出对流云增雨催化存在时间窗,最佳的催化时机应该为对流云发展的早期,催化后关键是增加雨和冰晶冻结后碰并霰增长这一冰相微物理过程的产量.根据模式分析结果,结合雷达观测资料分析,发现对流回波在生成及发展上表现出一些规律性,可以作为通过雷达观测识别增雨催化的时机和潜力区域的指标. |
| 关 键 词： | 对流云 人工增雨 催化时机 三维云模式 雷达识别 |
| 收稿时间： | 2007-04-26 |
| 修稿时间： | 2007-10-08 |
A Case Simulation Analysis and Radar Detection on Seeding Opportunity of Rainfall Enhancement for Convective Cloud |
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| Wang Bin,Xiang Yuchun and Zhang Hongyan.A Case Simulation Analysis and Radar Detection on Seeding Opportunity of Rainfall Enhancement for Convective Cloud[J].Meteorological Monthly,2008,34(1):35-40. | |
| Authors: | Wang Bin Xiang Yuchun and Zhang Hongyan |
| Abstract: | Analysis and identification on seeding opportunity for enhancing rainfall in a convectional precipitation case occurred in northwestern Hubei, a mountainous area, are introduced. Firstly, based on a fully elastic three-dimensional and dual-parameter cumulus cloud numerical model, a series of sensitive modeling tests on seeding AgI agent in a variety of time is conducted to analyze how various seeding time affects the result of precipitation enhancement and its precipitation physical mechanism. It is concluded that the appropriate seeding opportunity is at the early period when a convective cloud is developing after its original formation. According to the results of simulation analysis in this case and based on radar data, the method of detecting appropriate seeding opportunity is discussed by analyzing forming and developing characteristics of convective cell echoes in the entire precipitation process. |
| Keywords: | convective cloud precipitation enhancement seeding opportunity three-dimension-cumulus model radar detection |
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