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首页> 外文期刊>Atmospheric science letters >Detection of low‐frequency organized structures in night‐time air flow within a spruce canopy on the upwind and downwind sides of a mountain ridge
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Detection of low‐frequency organized structures in night‐time air flow within a spruce canopy on the upwind and downwind sides of a mountain ridge

机译:在山脊上,下风侧云杉冠层内夜间气流中的低频有组织结构的检测

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In this paper, a wavelet‐based methodology is proposed to study the main features of turbulence data collected within the crown layer of an even‐aged Norway spruce forest at the Bíly K?í? site. The site is situated on a steep (25%) south‐southwest‐facing slope near the top of a mountain ridge. The periods of organized structures detected when the site is on the downwind (leeward) side of the ridge are significantly shorter than those detected when the site is on the upwind side of the ridge. However, the ‘leeward’ structures have a relatively higher persistence and frequency of occurrence in the 30‐min time series.
机译:在本文中,提出了一种基于小波的方法来研究在BílyK?í?的一个均匀年龄的挪威云杉林冠层内收集的湍流数据的主要特征。现场。该地点位于靠近山脊​​顶部的西南偏南坡度(25%)。当站点位于山脊的顺风(下风)侧时,所检测到的有组织结构的周期明显短于站点位于山脊的逆风侧时所检测到的有组织结构的周期。但是,“下风”结构在30分钟的时间序列中具有相对较高的持久性和发生频率。

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