摘要
从天气系统、物理量场、回波特征等方面对2017年7月14日鄂东发生的一次局地强对流风雹过程进行分析,结果发现,此次风雹天气是在副高外围高温高湿的不稳定环境下,低层水汽辐合、干层侵入和地面辐合共同触发生成多单体对流风暴,对流风暴的雷达回波表现出明显的后向传播特征。从预报角度来看,根据EC等数值预报产品分析14日风场日白天潜势条件较好,尤其在17:00,预报场在鄂东地区报出一个明显的水汽辐合区,具备了触发强对流的条件。
From the aspects of weather system,physical field,echo characteristics and so on,a strong local convective hailstorm process occurred in eastern Hubei Province on July 14,2017 was analyzed. The results showed that the hail weather was triggered by the convergence of low-level water vapor,dry-layer intrusion and ground convergence in the unstable environment of the subtropical high-temperature and high-humidity environment. The radar echo of convective storm showed obvious backward propagation characteristics. From a forecast point of view,according to EC and other numerical forecast product analysis on the 14 th daytime wind conditions were better daytime potential conditions,especially at 17: 00,the forecast field in the eastern Hubei Province reported a significant water vapor convergence zone with the conditions to trigger strong convection.
出处
《安徽农业科学》
CAS
2018年第7期133-137,共5页
Journal of Anhui Agricultural Sciences
关键词
风雹
天气形势
物理量场
回波特征
Hailstorm
Weather situation
Physical field
Echo characteristics
作者简介
童红梅（1989-）,女,湖北荆州人,助理工程师,从事天气预报及作.
