近年影响桂林的台风暴雨动力热力特征及日本数值预报产品检验

对近年造成桂林台风暴雨的大中尺度环流背景形势作了分析,着重对比分析了尤特和黄蜂台风暴雨的热力、动力特征,对比结果表明:高空槽云系与台风倒槽云系叠加造成的暴雨远比单纯的台风环流造成的暴雨严重,说明中低纬天气系统的相互作用能造成暴雨的增幅。同时检验了日本数值预报产品对台风暴雨预报能力,结果表明:日本数值预报产品对台风环流本身造成暴雨有较好预报能力。

The Atmosphere Dynamic and Thermal Energy Characteristics of the Typhoon Rainstorm affecting Guilin and the Examination of Japanese Numerical Forecasting Products in Recent Years

This Paper studies the large and medium-scale circulation background situation of the typhoon rainstorm affecting Guilin in recent years, and emphatically compares and analyzes the thermal and dynamic Energy Characteristics of the rainstorm of typhoon Ute and Hornet. The compared result indicates: the rainstorm caused by the superimposition of upper-air trough and the typhoon trough is far more serious than that of the single and pure typhoon circulation. And it explains that the interaction of the low-latitude weather system can create the increased range of the rainstorm. Meanwhile the forecast capability of the Japanese numerical forecasting products for the typhoon rainstorm is examined and the result indicates that The Japanese numerical forecasting products show better forecast capability on the rainstorm caused by typhoon circulation itself.