Abstract On the basis of the wind records from 356-m-high Shenzhen Meteorological Gradient Tower (SZMGT) which is the tallest of its kind in Asia, this paper presents an observational study of wind characteristics during Super Typhoon Mangkhut and aims to enhance the understanding of the boundary layer wind structure of strong typhoons over land. First of all, the raw records are selected for subsequent analysis through quality control concerning flow distortion, thermal stability, stationarity, and spikes. Then wind speed profiles, as well as their associations with upstream terrain conditions, are presented and discussed. Moreover, parameters for describing atmospheric turbulence, involving gust and peak factors, turbulence intensities, turbulence integral length scales, and turbulence ratios, are investigated considering different surface roughness regimes. Furthermore, Gaussianity, power spectral density, and coherence of wind velocities are investigated. The outcome of this study is expected to facilitate the wind-resistant design of high-rise structures in typhoon-prone regions and provide references for typhoon boundary layer simulation.

中文翻译：

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超强台风山竹期间风特性、风速和湍流廓线的观测研究

摘要 本文以亚洲最高的 356 米深圳气象梯度塔（SZMGT）的风力记录为基础，对超强台风“山竹”期间的风特征进行了观测研究，以期加深了解。陆上强台风边界层风结构分析. 首先，通过质量控制选择原始记录进行后续分析，包括流动畸变、热稳定性、平稳性和尖峰。然后介绍和讨论风速剖面，以及它们与上游地形条件的关联。此外，描述大气湍流的参数，包括阵风和峰值因子、湍流强度、湍流积分长度尺度和湍流比，研究考虑了不同的表面粗糙度制度。此外，还研究了高斯性、功率谱密度和风速的相干性。研究成果有望为台风多发地区高层建筑的抗风设计提供参考，为台风边界层模拟提供参考。