高炮方位标注专利技术的应用

对2007年8月7日发生在太原的突发性暴雨过程，从天气形势、探空资料、多普勒雷达产品等方面进行了分析，结果表明：a）前倾槽、300hPa急流、副高边缘暖湿气流活跃是产生暴雨天气的有利背景。b）探空资料分析表明，中低层暖湿平流、高空干冷平流的存在使得大气层结不稳定趋于增大，是造成此次暴雨的直接原因。c）低层暖平流加辐合和高层辐散叠加的多普勒雷达速度场对大范围强降水发展、维持、消散具有很好的预报指示作用；逆风区、中尺度切变线、辐合线在强降水临近预报中有明确的指示意义。d）雷达风廓线产品分析表明，低空急流在夜间产生并加强，使降水夜间加强并导致大暴雨的发生。

Abrupt Rainstorm Analysis on August 7,2007 in Taiyuan City

The abrupt rainstorm was analyzed in August 7, 2007 in Taiyuan on weather situation, sounding data and Doppler radar data. The result show： a）It was favorable for rainstorm that were forward trough, 300hpa jet and active warm and wet flow at edge of subtropical high. b） The direct reason which caused the rain storm was the unstable atmospheric stratification, c）Adverse wind area, instructions significance in instance rainfall forecast. mesoscale shear line and convergence line had clear d） The low level jet produced and strengthened in the night and it strengthened the rainfall and led to the rainstorm.