Improvement of Rainfall Estimation and Rainfall Prediction Using the Next Generation Polarimetric Radar and Its Impact Evaluation for Water Management

为了改进河流控制中的定量降水估计和预报，在冲绳进行了与视频探空仪同步的新一代偏振雷达的动态观测。在此基础上，建立了利用偏振雷达资料估算降水粒子大小分布和类型的方法。此外，通过将估计方法应用到数值天气预报中，或通过对降水机制的深入理解，实现了QPE和QPF的先进技术。

With a view to improve quantitative precipitation estimation and forecast for river control, the campaign observation of the next generation polarimetric radar synchronized with videosonde were carried out in Okinawa. As the result, the method of estimation of the drop size distribution and the type of precipitation particles using the polarimetric radar data was developed. Moreover, the advanced techniques of QPE and QPF were brought to realization by applying the estimation method to the numerical weather prediction, or by deeply understanding of precipitation mechanism.