LIN Dan,WANG Weijia.On Effect Assessment of an Airborne Cloud Seeding Operationin Early Summer in Sichuan Basin[J].Journal of Chengdu University of Information Technology,2020,35(01):117-122.[doi:10.16836/j.cnki.jcuit.2020.01.016]
四川盆地初夏一次飞机增雨作业的效果检验
- Title:
- On Effect Assessment of an Airborne Cloud Seeding Operationin Early Summer in Sichuan Basin
- 文章编号:
- 2096-1618(2020)01-0117-06
- Keywords:
- atmospheric science; cloud precipitation; artificial precipitation; statistical testing; physical testing
- 分类号:
- P481
- 文献标志码:
- A
- 摘要:
- 针对2018年6月11日四川盆地一次飞机人工增雨作业过程,采用地面自动站数据、FY4A卫星云参数产品和多普勒雷达产品等多种资料,使用统计检验和物理检验相结合的方法,分析了作业效果。区域历史回归分析结果表明,作业影响区和对比区相关性较好,绝对增雨量1.64 mm,相对增雨率约20%。物理检验结果表明,作业后影响区雨量明显增加,增加量超过1 mm,雷达回波强度增强,回波面积扩大,云有效粒子半径从17 μm增长至24 μm,云液水含量有所消耗,雷达回波和卫星云参数变化均能反应出人工增雨催化后的物理变化。
- Abstract:
- By using ground automatic station, cloud parameter products from FY4A satellite and Doppler radar products,and adopting the method which combine the statistical test and physical test, the effect evaluation has been made on the aircraft cloud seeding operation which took place on June 11,2018 in Sichuan basin. The results of regional historical regression analysis show that the correlation between the operation affected area and the comparison area is well, the absolute precipitation increase is 1.64 mm and the relative ratio of precipitation increase is nearly 20%.The results of physical testing show that after seeding operation, the rainfall in the operation affected area increase significantly by more than 1mm. The radar echo intensity increases, and the echo area expands. The cloud effective particle radius increases from 17 μm to 24 μm, and the cloud liquid water decreases. The physical changes of clouds after seeding operation can be detected by the change of radar echo and cloud parameter from satellite.
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备注/Memo
收稿日期:2019-03-11基金项目:四川省应用基础研究计划资助项目(2019YJ0621); 四川省留学回国人员科技活动择优资助项目(2018-72); 高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金资助项目(省重实验室2018-重点-13、省重实验室2018-青年-19和SCQXKJQN2019025)