Polarimetric radar observations of Hurricane Matthew's asymmetric eyewall were captured by WSR‐88D radars from 1500 UTC on 7 October 2016 to 0000 UTC on 8 October 2016. Raindrop size sorting was observed within the eyewall, marked by a differential reflectivity (Z_DR) enhancement region situated upwind of a specific differential phase (K_DP) enhancement region, both overlapping the maximum reflectivity. This signature indicated that the largest raindrops fell out of the eyewall updrafts faster than the smaller, abundant drops that were advected further downstream by the primary circulation. Airborne Doppler radar observations revealed an updraft structure in an azimuthal location consistent with the size‐sorting signature and previous observational studies of eyewall kinematic asymmetries.

中文翻译：

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飓风马修（2016）的不对称眼墙中的水流星大小排序

WSR-88D雷达从2016年10月7日的1500 UTC到2016年10月8日的0000 UTC捕获了对马修飓风非对称眼墙的极化雷达观测结果。在眼墙内观察到雨滴大小排序，其特征在于反射率差异（Z _DR）增强区域位于特定微分相位（K _DP）增强区域，两者都重叠了最大反射率。该特征表明，最大的雨滴从眼壁上升气流中落出的速度比一次循环所向后平移的较小的，丰富的雨滴要快。机载多普勒雷达观测揭示了一个方位角位置的上升气流结构，与大小分类特征和以前的眼壁运动学不对称观测研究一致。