Ground-based radar observations of the concentric eyewalls (CEs) of supertyphoon Hinnamnor (2022) showed that CEs evolved as follows: (Stage 0) development of a distinct stationary band complex (SBC) downshear in moderate south-southeastward vertical wind shear (VWS), (Stage 1) maturity of the secondary eyewall (SE), (Stage 2) contraction of the SE, and (Stage 3) decay of the CE structures. From Stage 0 to Stage 1, the SBCs transitioned into an axisymmetric SE, and moats appeared a few hours after SE formation. Outer rainbands formed successively in the down-to-left shear quadrants and developed wide stratiform regions with a vast anvil cloud extending outward as they moved upshear. When the anvil cloud covered the right-shear quadrants, the stratiform regions started contracting. Evolutions of the doppler velocity fields were detected under the anvil and stratiform regions of each rainband. An intense convection developed at the inner edge of the contracting SE as regions with relatively high doppler-velocity merged. When the core region was surrounded by multiple well-developed rainbands, the inner eyewall weakened rapidly. The radar observations revealed the importance of moderate-to-weak VWS and development of a SE as a rainband complex during evolution of CEs.

对超强台风 Hinnamnor（2022 年）同心眼壁 (CEs) 的地面雷达观测表明，CEs 演化如下：（第 0 阶段）在中等南-东南向垂直风切变（VWS）中形成一个独特的固定带复合体（SBC）下切流)，（第 1 阶段）次级眼壁 (SE) 的成熟度，（第 2 阶段）SE 的收缩，以及（第 3 阶段）CE 结构的衰变。从第 0 阶段到第 1 阶段，SBC 转变为轴对称 SE，并且在 SE 形成几小时后出现护城河。外雨带在从下到左的剪切象限中相继形成，并发展出宽阔的层状区域，当它们向上移动时，巨大的砧状云向外延伸。当砧云覆盖右切变象限时，层状区域开始收缩。在每个雨带的铁砧和层状区域下检测到多普勒速度场的演变。随着多普勒速度相对较高的区域合并，在收缩的 SE 的内边缘发展了强烈​​的对流。当核心区被多个发育良好的雨带包围时，内眼墙迅速减弱。雷达观测揭示了在 CE 演化过程中中度至弱 VWS 和 SE 作为雨带复合体发展的重要性。