Liutex核心线作为热带气旋涡旋分析的新框架
Liutex Core Lines as a New Framework for Tropical Cyclone Vortex Analysis
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中文总结 AI 辅助
本文提出利用Liutex核心线分析飓风多里安，揭示热带气旋为多尺度涡旋系统而非单一涡核，并提供量化涡旋几何与演化的新框架。
中文摘要 AI 辅助
Liutex核心线被系统地应用于飓风多里安，以研究强烈热带气旋的三维涡旋组织。与基于风速或涡度的传统分析不同，Liutex核心线识别局部涡旋轴，并提供旋转结构的紧凑几何表示。结果表明，多里安并非以单一涡核为特征，而是由嵌入在连贯的飓风尺度环流中的大量涡旋组成。更强且更垂直组织的涡旋集中在内核区域，而众多较弱的、倾斜的和弯曲的涡旋结构向外延伸，并共同保持风暴的螺旋组织。因此，完整的核心线场揭示了飓风的三维多尺度涡旋骨架。这些结果表明，热带气旋可以被视为一个有组织的多尺度涡旋系统，而非单一的整体涡旋。除了可视化之外，Liutex核心线为量化涡旋几何、空间组织和时间演化提供了一个潜在框架，为研究热带气旋的结构变化和涡旋动力学提供了一种新方法。
英文摘要
Liutex core lines are systematically applied to Hurricane Dorian to investigate the three-dimensional vortical organization of an intense tropical cyclone. Unlike conventional analysis based on wind speed or vorticity, Liutex core lines identify the local vortex axes and provide a compact geometrical representation of rotational structures. The results show that Dorian is not characterized by a single vortex core, but by a large population of vortices embedded within a coherent hurricane-scale circulation. Stronger and more vertically organized vortices are concentrated in the inner-core region, whereas numerous weaker, inclined, and curved vortical structures extend outward and collectively retain the spiral organization of the storm. The complete core line field therefore reveals a three-dimensional, multiscale vortical skeleton of the hurricane. These results suggest that a tropical cyclone can be viewed as an organized multiscale vortex system rather than a single monolithic vortex. Beyond visualization, Liutex core lines provide a potential framework for quantifying vortex geometry, spatial organization, and temporal evolution, offering a new approach for studying structural changes and vortex dynamics in tropical cyclones.
发表机构
- University of Texas at Arlington（阿灵顿得克萨斯大学）
机构由 AI 辅助整理，请以论文原文为准。
