在台风业务系统中使用卫星云导风资料的试验

在国家气象中心台隐数值预报业务系统中引入国家卫星气象中心提供的卫星云导风资料，进行两项预报试验。第一项是把卫星云导风资料作为观测资料进行最优插值客观分析；第二项是将云导风资料加入到轴对称的人造台风模型风场上，使之产生非对称风场。试验结果表明：卫星云导风资料作为观测资料进入模式后对减小台风路径预报误差效果明显；用云导风形成人造台风模型非对称风场可进一步提高台风路径预报精度。

Applied Experiments of the Prediction of Typhoon Tracks by Using Cloud Motion Wind Vectors

The cloud motion wind vectors provided by the National Satellite Meteorological Center are applied to the numerical weather prediction system of typhoon tracks at the National Meteorological Center.Numerical experiments of the prediction of typhoon tracks are done for initially inquiring into the method of using cloud motion wind vectors in improving typhoon model. The experiments consist of two forecast trials. The first one is to take cloud motion wind vectors as observation data to do optimum interpolation objective analysis. Based on the first test, the second one is to put cloud motion wind into the axisymmetric vortex wind field to form asymmetric wind field of bogus vortex.The result indicates that the first one can distinctly reduce the prediction errors of typhoon tracks and the second one can further improve the prediction precision.