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New findings concerning the structure of the marine atmospheric boundary layer over the Baltic Sea -possible implications for wind energy installations

机译：关于波罗的海海洋大气边界层结构的新发现-可能对风能装置产生影响

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摘要

Seven years worth of meteorological tower data from the site Ostergarnsholm in the Baltic Sea have provided new information on the structure of the marine atmospheric boundary layer, of high relevance for off-shore wind energy siting. The present paper is a review based on a series of original papers, which have appeared recently or are about to appear in the meteorological literature. Waves on the water surface modify the flow considerably as soon as they become of sufficient length. Thus, during neutral conditions, a logarithmic wind profile is observed only when the waves are growing actively. During unstable stratification, which occurs at this site during more than half the time, several factors act together to reduce the magnitude of the wind shear to a considerable extent. Velocity spectra during neutral conditions and growing sea agree with corresponding spectra over land, which have recently been shown to have appreciably more low-frequency energy than previously assumed. The marine spectra are shown to be strongly dependent on wave-state. The effect of limited water depth on the structure of the marine surface layer is discussed.
机译：来自波罗的海Ostergarnsholm站点的长达7年的气象塔数据提供了有关海洋大气边界层结构的新信息，与海上风能选址具有高度相关性。本文是对基于一系列原创论文的综述，这些原创论文是最近出现或即将出现在气象文献中的。一旦水面的波浪长度足够大，它们就会对水流产生很大的影响。因此，在中性条件下，仅当海浪活跃时才观察到对数风廓线。在不稳定的分层中（在该位置发生的时间超过一半），有几个因素共同作用，以在很大程度上减小风切变的幅度。在中性条件下和不断增长的海洋中的速度谱与陆地上的相应谱一致，近来已证明它们的低频能量比以前假定的要多得多。海洋光谱显示出强烈依赖于波态。讨论了有限的水深对海洋表层结构的影响。

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  • 来源
    《Wind Engineering》 |2003年第6期|p. 431-447|共17页
  • 作者

    Ann-Sofi Smedman; Ulf Hogstrom; Hans Bergstrom; Cecilia Johansson; Anna Sjoblom; Xiaoli Guo Larsen;

  • 作者单位

    Department of Earth Sciences, Meteorology, Uppsala University.Villavagen I6,SE-75236 Uppsala, Sweden;

    Department of Earth Sciences, Meteorology, Uppsala University.Villavagen I6,SE-75236 Uppsala, Sweden;

    Department of Earth Sciences, Meteorology, Uppsala University.Villavagen I6,SE-75236 Uppsala, Sweden;

    Department of Earth Sciences, Meteorology, Uppsala University.Villavagen I6,SE-75236 Uppsala, Sweden;

    Department of Earth Sciences, Meteorology, Uppsala University.Villavagen I6,SE-75236 Uppsala, Sweden;

    Department of Earth Sciences, Meteorology, Uppsala University.Villavagen I6,SE-75236 Uppsala, Sweden;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 风能、风力机械;
  • 关键词

  • 入库时间 2022-08-18 00:26:28

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