Evidence for an Emergent Sharp-Interface Regime in Tropical Cyclones: An Optimal Transport Perspective

This archive contains the fully reproducible analysis code and documented data processing workflow supporting the manuscript: Evidence for an Emergent Sharp‑Interface Regime in Tropical Cyclones: An Optimal Transport Perspective. The repository implements a 1‑Wasserstein (optimal transport) framework to quantify vertical eye–eyewall structural sharpness in tropical cyclones using CloudSat Cloud Profiling Radar (CPR) reflectivity observations (2006–2020). Structural sharpness is computed between adjacent vertical profiles along CloudSat overpasses intersecting tropical cyclone inner cores and aggregated at the storm level. The archive includes: Python scripts to reproduce all figures and statistical results presented in the paper (Figures 1–3 and Figure S5); Processed CloudSat CPR granules corresponding to the storm inventory listed in the Supplementary Information (Table S1); Statistical routines for effect‑size estimation (Cliff’s Δ) and bootstrap confidence intervals; Scripts demonstrating the independence of structural sharpness from storm intensity using IBTrACS v4r01 best‑track data. All scripts are fully documented and are configured to reproduce the published results using the exact CloudSat granules referenced in the manuscript. This archive is intended to ensure transparency, reproducibility, and long‑term accessibility of the analysis.本归档文件包含支撑下述学术论文的可完全复现分析代码与带规范文档的数据处理流程： 《热带气旋中涌现的尖锐界面态：基于最优传输（Optimal Transport）的视角》 本仓库实现了1-瓦瑟斯坦（1-Wasserstein）框架，用于基于CloudSat云廓线雷达（Cloud Profiling Radar, CPR）2006年至2020年的反射率观测数据，量化热带气旋的垂直眼区-眼墙结构尖锐度。结构尖锐度的计算基于穿过热带气旋内芯的CloudSat过境轨道上的相邻垂直廓线，并按单个风暴级别进行聚合统计。 本归档文件包含以下内容： 1. 可复现论文中全部图表与统计结果的Python脚本（含图1至图3及补充材料图S5）； 2. 与补充信息表S1所列风暴清单对应的预处理完成的CloudSat CPR数据粒； 3. 用于效应量估计（克利夫Δ，Cliff’s Δ）与自助法置信区间计算的统计程序； 4. 利用IBTrACS v4r01最佳路径数据验证结构尖锐度与风暴强度无关性的脚本。 所有脚本均配有完整文档，且可通过论文中引用的原始CloudSat数据粒复现已发表的研究结果。本归档文件旨在保障本分析的透明度、可复现性与长期可访问性。