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首页> 外文期刊>Journal of Applied Remote Sensing >Triple Doppler wind lidar observations during the mountain terrain atmospheric modeling and observations field campaign
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Triple Doppler wind lidar observations during the mountain terrain atmospheric modeling and observations field campaign

机译：山区地形大气建模和观测野战期间的三重多普勒风激光雷达观测

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Coordinated triple Doppler wind lidars (DWLs) were employed during the Mountain Terrain Atmospheric Modeling and Observations (MATERHORN) program field campaign to observe turbulent winds in the mountain terrain atmospheric boundary layer (ABL). The feasibility of observing large turbulent eddies was investigated by pointing three DWL at an intersecting probe volume adjoining a sonic anemometer mounted on the top of a meteorological tower. The time series and spectra of the sonic anemometer measurement were compared with the lidars. The lidar radial velocities closely followed those of the sonic anemometer, both in time and in the low frequency spectral domain, suggesting that the DWL technique is suitable for observing large turbulent eddies in the ABL. In addition, coordinated scanning triple DWL were used to directly measure the three-dimensional wind vectors, thus circumventing the assumptions required in using single or dual lidar deployments for full velocity measurements. The scanning triple lidar results were in satisfactory agreement with data from tower-based sonic anemometers. Notwithstanding, because of the difficulty of obtaining temporal and spatial synchronizations of the three lidars, the data were scant since a large amount of data had to be rejected in postprocessing. This difficulty is surmountable in the future by employing a robust control system for coordinated scanning. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
机译：在“山区地形大气建模与观测”（MATERHORN）计划野外活动期间，使用了协调的三重多普勒风激光雷达（DWL）来观测山区地形大气边界层（ABL）中的湍动风。通过将三个DWL指向与安装在气象塔顶部的声速计相邻的相交探头体积，研究了观察大湍流涡流的可行性。将风速计测量的时间序列和频谱与激光雷达进行了比较。激光雷达的径向速度在时间上和低频频谱域上均紧跟声速计的速度，这表明DWL技术适合于观测ABL中的大涡流。此外，协调扫描三重DWL用于直接测量三维风矢量，从而规避了使用单或双激光雷达部署进行全速测量所需的假设。三重激光雷达的扫描结果与基于塔式声波风速计的数据令人满意。尽管如此，由于难以获得三个激光雷达的时间和空间同步，因此数据很少，因为在后期处理中必须拒绝大量数据。通过采用鲁棒的控制系统进行协调扫描，将来可以克服这一困难。 （C）作者。由SPIE根据Creative Commons Attribution 3.0 Unported License发布。分发或复制此作品的全部或部分，需要对原始出版物（包括其DOI）进行完全归因。

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