石岛地区暴雨天气过程分析及气象服务评价
该论文来源于网络，本站转载的论文均是优质论文，供学习和研究使用，文中立场与本网站无关，版权和著作权归原作者所有，如有不愿意被转载的情况，请通知我们删除已转载的信息，如果需要分享，请保留本段说明。
摘要 从天气形势配置与暴雨落区的关系、数值预报情况等方面分析了2013年7月12日石岛地区暴雨过程，发现此次过程为典型的西风槽与副热带高压边缘西南暖湿气流交绥造成的，低空急流的建立、发展和维持为暴雨区提供了强的水汽输送和能量积累；水汽通量的强辐合是降水的中尺度对流系统发生发展的重要条件之一；切变线与低空急流的位置对暴雨落区有明显的影响。根据分析结果，及时发布预警信号，积极做好气象服务，有效减轻了人民群众的财产损失。此次天气过程的气象服务对于气象部门应对极端天气过程具有重要的参考价价值。
关键词 暴雨；天气形势；切变线；低空急流；灾害预警；气象服务
中图分类号 P458 文献标识码 A
文章编号 0517-6611（2019）09-0198-03
doi：.0517-
Abstract The rainstorm process in Shidao area on July 12， 2013 was analyzed from the relationship between weather situation configuration and rainstorm area， and numerical forecasting，it was found that the process was caused by the intersection of a typical westerly trough and the southwest warm and humid airflow along the subtropical highpressure edge；the establishment， development and maintenance of lowlevel jets provided strong water vapor transport and energy accumulation for storm areas；the strong convergence of water vapor flux was one of the important conditions for the occurrence and development of precipitation mesoscale convective systems；the location of the shear line and the lowlevel jet stream had a significant impact on the rainstorm to the analysis results， timely warning signals were issued， and meteorological services were actively carried out， effectively reducing the property losses of the meteorological services of the weather process had important reference value for the meteorological department to deal with extreme weather processes.
Key words Rainstorm；Weather situation；Shear line；Lowlevel jet stream；Disaster warning；Meteorological service
暴雨是我國常见的灾害性天气，是指在短时间内出现大量降水的天气现象，24 h内累积降水量达50～100 mm。它是夏季常见的一种天气现象，具有突发性强、强度高和落区多变的特点，由暴雨造成的洪涝灾害以及滑坡、泥石流等次生灾害严重影响了我国的国民生计，因此暴雨受到各级党政机关、各行各业和人民群众的高度重视和密切关注[1-2]。亓翠芸等[3]分析表明，低空急流的建立、发展和维持为暴雨区提供了强的水汽输送和能量积累。近年来，随着数值预报的发展，暴雨预报准
石岛地区暴雨天气过程分析及气象服务评价 来自淘豆网m.daumloan.com转载请标明出处.
