Numerical Simulation of a Hailstorm Process and AgI-seeding in Xichang of Sichuan Province

doi:10.11755/j.issn.1006-7639(2017)-03-0490

Numerical Simulation of a Hailstorm Process and AgI-seeding in Xichang of Sichuan Province

Online:2017-06-26 Published:2017-06-26

西昌一次降雹过程的催化数值模拟

郑飒飒1,2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2，刘东升1,2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2，邹勇3，余芳1,2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2[Author]) AND 1[Journal]) AND year[Order])" target="_blank">2

1.四川省人工影响天气办公室，四川成都610072；2.高原与盆地暴雨旱涝灾害四川省重点实验室，
四川成都610072；3.四川省凉山州气象局，四川凉山彝族自治州615000

作者简介:郑飒飒（1987- ），女，硕士研究生，工程师，主要从事人工影响天气方面研究. E-mail:524302035@qq.com
基金资助:
四川省气象局科学技术研究开发课题（川气课题2014-开发-11）和“南方大范围云系人工增雨潜力探测研究”（GYHY201406032）共同资助

Abstract

Abstract:

Based on the three-dimensional hail cloud model, a hailstorm process occurring in Xichang of Sichuan Province on 29 April 2013 was simulated. Several hail suppression tests with varied seeding time, seeding height, seeding amount and seeding method of AgI were carried out. The results show that the optimum hail suppression effect could be achieved by selecting the appropriate seeding time, seeding amount, seeding position and area. Through the comparative analysis of hail formation mechanism of the seeding and natural cloud, it could be known that after seeding AgI the hail couldn’t grow because of “favorable competition”, and reduction of the graupel embryo and hail hitting cloud water caused the reduction of hail.

Key words: hail suppression, AgI, seeding experiment, numerical simulation

摘要：

利用三维冰雹云模式对2013年4月29日西昌一次降雹过程进行催化数值模拟，根据碘化银的催化时间、催化高度、催化用量和催化方式开展一系列防雹试验。结果表明：选择合适的催化时间、催化剂量、催化位置及催化方式，可以达到最佳防雹效果；通过对催化例和未催化例的冰雹形成机制对比分析得出，在播撒碘化银后，激发了“有利竞争”，雹块不能长大；霰胚的减少及冰雹碰并云水的减少，导致降雹减少。

关键词: 人工防雹, AgI, 催化试验, 数值模拟

郑飒飒1,2，刘东升1,2，邹勇3，余芳1,2. 西昌一次降雹过程的催化数值模拟[J]. 干旱气象, DOI: 10.11755/j.issn.1006-7639(2017)-03-0490.

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