欢迎访问《中国农学通报》,

中国农学通报 ›› 2017, Vol. 33 ›› Issue (6): 144-149.doi: 10.11924/j.issn.1000-6850.casb16040081

所属专题: 现代农业发展与乡村振兴 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

青海省东部农业区一次防雹个例分析

林春英周万福,金惠瑛,张博越,张芳 李甫   

  1. 青海省人工影响天气办公室 青海 西宁,青海省人工影响天气办公室 青海 西宁,青海省人工影响天气办公室 青海 西宁,青海省气象科学研究所 青海 西宁;青海省气象科学研究所 青海 西宁
  • 收稿日期:2016-04-13 修回日期:2017-02-28 接受日期:2016-08-10 出版日期:2017-03-02 发布日期:2017-03-02
  • 通讯作者: 林春英周万福
  • 基金资助:
    国家自然科学基金地区科学基金项目(41665008)和国家留学基金委员会西部地区人才培养特别计划共同资助。

A Case Analysis of Hail Suppression in Agricultural Areas of Eastern Qinghai

  • Received:2016-04-13 Revised:2017-02-28 Accepted:2016-08-10 Online:2017-03-02 Published:2017-03-02

摘要: 利用形势场、地面图和物理量场等资料对2015 年7 月13 日青海省门源县冰雹天气进行诊断分析,用雷达对作业前后冰雹云的特征量分析来判断人工防雹作业的效果。结果表明:此次门源县的冰雹发生在高温、高湿及强的垂直风切变的环境下;闪电最大频次出现在降雹时间段内,正好处于强回波发展旺盛的阶段,负闪明显多于正闪;炮击雹云后雷达回波顶高下降,回波强度减弱,垂直液态水含量(VIL)45 kg/m2范围逐渐变小。

关键词: 聚丙烯酰胺, 聚丙烯酰胺, 天津滨海, 吹填土, 入渗, 蒸发

Abstract: A local hail process on July 13, 2015 in Menyuan of Qinghai was diagnosed according to the atmospheric circulation situation, surface chart and physical elements data etc. The effect of artificial hail suppression was quantitatively analyzed based on the characteristics of hail cloud before and after shelling by a radar. The results showed that: the hail weather happened under high temperature, high humidity and strong vertical wind shearing situation in Menyuan; the highest rate of lightning appeared during hailing, where a strong echo was in a strong developing level, negative lightning was obviously more than positive lightning; radar echo top height declined after shelling hail clouds, echo strength reduced, and liquid water content (VIL) 45 kg/m2 range became smaller.