摘要
利用数值预报产品、卫星云图以及雷达等资料对2011年7月25-26日辽宁葫芦岛地区大暴雨过程进行了诊断分析。研究结果表明:高空槽、低空切变和地面倒槽是这次大暴雨发生的主要影响系统,低空急流将水汽源源不断地向暴雨区输送,雷达回波中表现为一条向东北方向移动的强回波带。卫星云图中显示出一个发展旺盛的中尺度对流云团。
By using numerical forecast products, satellite cloud images and radar data in Liaoning huludao area torrential rain process a diagnostic analysis arrived 26 days on July 25,2011. The results show that upper trough, low shear and ground trough is the cloudburst happen the major effect of the system, the low-level jet water vapor will continuously to heavy rain area delivery, radar echo performance for a northeasterly direction of strong echo belt. Satellite cloud image showed a strong development of the mesoscale convective cloud cluster.
关键词
大暴雨
低空急流
中尺度分析
heavy rain
low-level jet
mesoscale analysis
