气象雷达反演大气湍流动能耗散率现状与分析

Current status and analysis of atmospheric turbulence kinetic energy dissipation rate retrieval by meteorological radar

  • 摘要: 作为大气湍流核心参数之一,湍流动能耗散率(ε)的精准反演,对气象预报、遥感通信、航空安全、风能开发等领域至关重要。通过溯源气象雷达反演ε的理论基础,梳理归纳数十年来反演方法的改进情况和适用特点,分析总结气象雷达ε反演的应用进展,指出未来技术将向多波段雷达协同观测、深度学习驱动的多源数据融合等方面发展,旨在为ε反演方法的优化创新提供理论和技术参考。

     

    Abstract: Atmospheric turbulence is the key process of regulating the exchange of atmospheric materials and energy. As one of the core parameters of atmospheric turbulence, the turbulent energy dissipation rate (ε), its accurate inversion is very important for the fields of weather forecast, remote sensing communication, aviation safety, wind energy development and so on. Through the traceability of the K41 theory—the theoretical basis of meteorological radar inversion ε, the development of the main retrieval technologies such as the structure function method, the power spectrum method and the spectral width method in the past few decades is combed in detail, including the application conditions, advantages and disadvantages, application scenarios and technical improvements of the methods. The application characteristics, detection cases and comparison verification of the retrieval of ε by wind profiler radar, weather radar, cloud radar and lidar are analyzed and summarized.this study identifies that future technological development will focus on multi-band radar collaborative observation and multi-source data fusion driven by deep learning, This work aims to provide theoretical and technical references for the optimization and innovation of ε retrieval method.

     

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