V-3θ图的结构与"98·6"暴雨过程预测分析

Structure of V 3θ Chart and the prediction of the "98 6" Torrential Rain Process

Ｖ－ ３θ图是成都气象学院欧阳首承教授设计出来的运用图像结构来预测天气的结构预测方法。主要利用大气中的压、湿、湿、风的垂直分布， 判断大气滚流对天气演变的影响来预报天气转折性变化。利用Ｖ－ ３θ图对桂林站１９９８ 年６ 月份的暴雨过程作一个综合分析。结果几次特强的降水都在Ｖ－ ３θ图上有较好的反映。

The V 3θ chart was designed by professor Ouyang Shoucheng of Chengdu Institute of Meteorology to predict weather in terms of picture structure.The vertical profiles of pressure,temperature,humidity and wind are used to determine the influence of atmospheric roll flow on weather and to predict the turning of weather.Torrential rain processes in June 1998 in Guilin station are conprehensively analyzed in terms of V 3θ chart.The results show that there are reflections of several exceptional torrential rain processes on V 3θ charts and weather without obvious precipitation can be qualitatively determined.