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首页> 外文期刊>Journal of the Atmospheric Sciences >Interaction of an asymmetric double vortex and trochoidal motion of a tropical cyclone with the concentric eyewall structure
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Interaction of an asymmetric double vortex and trochoidal motion of a tropical cyclone with the concentric eyewall structure

机译：同心眼壁结构的不对称双涡旋相互作用与热带气旋的摆线运动

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摘要

Radar echo images demonstrate that mature tropical cyclones frequently have a concentric eyewall structure, which consists of the inner eyewall, echo-free moat, and outer eyewall regions. Near the inner and outer eyewalls, well-defined wind maxima are generally observed. This indicates that two large vertical vorticity regions exist just inside radii of the two wind maxima near the inner and outer eyewalls. Therefore, the concentric eyewall structure can be considered to be a double vortex composed of the inner vortex and the outer vortex ring. In this study, the contour dynamics model is used on the f plane to analyze the characteristics of flows with either a symmetric double vortex or an asymmetric one, and examined the relationship between the movement of the inner vortex in an asymmetric double vortex and a trochoidal motion of a tropical cyclone with an asymmetric concentric eyewall structure.
机译：雷达回波图像表明，成熟的热带气旋通常具有同心眼墙结构，该结构由内眼墙，无回波护城河和外眼墙区域组成。在内眼墙和外眼墙附近，通常会观察到明确定义的风最大值。这表明两个大的垂直涡度区域正好位于内眼墙和外眼墙附近的两个风最大值的半径内。因此，同心眼壁结构可以被认为是由内部涡流和外部涡流环组成的双重涡流。在这项研究中，在f平面上使用轮廓动力学模型来分析具有对称双涡流或非对称双涡流的流动特性，并研究了非对称双涡流中的内涡运动与摆线之间的关系。不对称同心眼墙结构的热带气旋的运动。

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