Spatial and temporal correlations of wind speeds
Spatial and temporal correlations of wind speeds
复制标题
风速的时空相关性
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Baker
中科院分区：
文献类型：
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作者：
A. Quinn;C. Baker
从行人水平风的研究到运输强风预警系统，许多应用都需要不同地点风速关系的资料。为了确定英格兰北部和苏格兰南部120公里长的西海岸干线铁路沿线的风力状况，研究人员在8个地点进行了为期3个月的一系列实验。利用该地区两个天气气象站的附加资料进行比较。这些地点的风况受大尺度天气低气压控制。对数据的单点和多点分析表明，风速只有在3天或4天的时间段内才有很好的相关性——也就是说，在低气压的时间尺度上。对于短期的每小时平均测量，只有距离小于5公里的站点才获得高相关性。这对大范围预警系统的风速测量选址具有启示意义。一个卫理公会教徒…
Information on the relationship of wind speeds at different locations is required for a number of applications ranging from the study of pedestrian level wind to early warning systems of high winds for transport. A series of experiments were carried out over a 3-month period at eight sites to determine the wind conditions along a 120 km length of the West Coast Main Line railway in northern England and southern Scotland. Additional data from two synoptic meteorological stations in the area were used for comparison. The wind conditions at these sites are governed by large-scale synoptic depressions. Single and multiple point analysis of the data shows that the wind speeds are well correlated only over time periods of the order of 3 or 4 days – that is, on the time scale of the depressions. For short-term hourly mean measurements, high correlations are obtained only for sites that are less than about 5 km apart. This has implications for the siting of anemometry for warning systems over large areas. A metho...