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首页> 外文期刊>Boundary-layer Meteorology >The Hovsore Tall Wind-Profile Experiment: A Description of Wind Profile Observations in the Atmospheric Boundary Layer
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The Hovsore Tall Wind-Profile Experiment: A Description of Wind Profile Observations in the Atmospheric Boundary Layer

机译：霍夫索尔高风廓线实验：大气边界层风廓线观测的描述

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摘要

We present an analysis of data from a nearly 1-year measurement campaign performed at Hovsore, Denmark, a coastal farmland area where the terrain is flat. Within the easterly sector upstream of the site, the terrain is nearly homogenous. This topography and conditions provide a good basis for the analysis of vertical wind-speed profiles under a wide range of atmospheric stability, turbulence, and forcing conditions. One of the objectives of the campaign was to serve as a benchmark for flow over flat terrain models. The observations consist of combined wind lidar and sonic anemometer measurements at a meteorological mast. The sonic measurements cover the first 100 m and the wind lidar measures above 100 m every 50 m in the vertical. Results of the analysis of observations of the horizontal wind-speed components in the range 10-1200 m and surface turbulence fluxes are illustrated in detail, combined with forcing conditions derived from mesoscale model simulations. Ten different cases are presented. The observed wind profiles approach well the simulated gradient and geostrophic winds close to the simulated boundary-layer height during both barotropic and baroclinic conditions, respectively, except for a low-level jet case, as expected. The simulated winds are also presented for completeness and show good agreement with the measurements, generally underpredicting the turning of the wind in both barotropic and baroclinic cases.
机译：我们将对来自在丹麦霍夫索尔（地形平坦的沿海农田）进行的近1年测量活动中的数据进行分析。在站点上游的东风区域内，地形几乎是同质的。这种地形和条件为在广泛的大气稳定性，湍流和强迫条件下分析垂直风速剖面提供了良好的基础。该活动的目标之一是作为平坦地形模型流量的基准。这些观测包括在气象桅杆处组合的激光雷达和声速风速计测量。声波测量覆盖前100 m，而风激光雷达在垂直方向每50 m覆盖100 m以上。结合从中尺度模型模拟得出的强迫条件，详细说明了在10-1200 m范围内的水平风速分量和表面湍流通量的观测分析结果。提出了十种不同的情况。在正压和斜压条件下，除了低空急流情况外，观测到的风廓线分别很好地接近了模拟的梯度层和地转风，接近模拟的边界层高度，除了低空急流情况外，这是预期的。还提供了模拟风的完整性，并且与测量值显示出良好的一致性，通常在正压和斜压情况下都低估了风的转向。

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