Coupling wind LiDAR fixed and volumetric scans for enhanced characterization of wind turbulence and flow three‐dimensionality
Coupling wind LiDAR fixed and volumetric scans for enhanced characterization of wind turbulence and flow three‐dimensionality
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DOI：
10.1002/we.2865
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发表时间：
2023-10
期刊：
影响因子：
4.1
通讯作者：
M. Puccioni;C. Moss;G. Iungo
中科院分区：
文献类型：
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作者：
M. Puccioni;C. Moss;G. Iungo
在过去几十年里，脉冲光探测与测距（LiDAR，激光雷达）测风技术因其使用便捷且具有出色的时空分辨率，在海洋大气边界层（MABL）探测方面受到越来越多的关注。在多种扫描策略中，当需要高时间分辨率时，固定扫描是最突出的选择；然而，它无法提供风场空间非均匀性的信息。另一方面，体扫描能够表征风场的空间变异性，但时间分辨率比固定扫描低得多。在这项研究中，最近开发的用于激光雷达扫描优化设计和风速统计量反演的“激光雷达统计巴恩斯客观分析”（LiSBOA）算法，经过调整后适用于海洋大气边界层的应用。近期在得克萨斯州拉冯湖进行的实验活动中收集的激光雷达数据表明，固定扫描数据与经LiSBOA插值的体扫描数据之间的平均速度剖面具有良好的一致性，这进一步促使我们结合使用固定扫描和体扫描，以便同时表征垂直方向的风湍流统计量以及风场的体非均匀性。
Over the last decades, pulsed light detection and ranging (LiDAR) anemometry has gained growing attention in probing the marine atmospheric boundary layer (MABL) due to its ease of use combined with compelling spatio‐temporal resolution. Among several scanning strategies, fixed scans represent the most prominent choice when high‐frequency resolution is required; however, no information is provided about the spatial heterogeneity of the wind field. On the other hand, volumetric scans allow for the characterization of the spatial variability of the wind field with much lower temporal resolution than fixed scans. In this work, the recently developed “LiDAR Statistical Barnes Objective Analysis” (LiSBOA) algorithm for the optimal design of LiDAR scans and retrieval of wind velocity statistics is tailored for applications in the MABL. The LiDAR data, collected during a recent experimental campaign over Lake Lavon in Texas, show a good consistency of mean velocity profiles between fixed and LiSBOA‐interpolated volumetric data, thus further encouraging the use of coupled fixed and volumetric scans for simultaneous characterizations of wind turbulence statistics along the vertical direction and volumetric heterogeneity of the wind field.