Study on accuracy degradation in high intensity rainfall area observed by X-band MP radar

Abstract

When X-band MP radar has observed high intensity rainfall area, QPE(Quantitative Precipitation Estimation) of X-band MP radar(X-MP) can't often observe with high accuracy. In fact, QPE of X-MP has underestimated against Rain-gauge data and C-band radar data at JMA Asakura by heavy rain in the Northern-Kyushu region on July 2017. So, this study is to clarify observation characteristics of X-MP using this event such as including high intensity rainfall area. This study has used horizontal polarization (Zh) and specific differential phase shift(Kdp) as polarization parameter of X-MP.