1961~2017年中国地区风速时空变化规律研究

Spatiotemporal Change of Wind Speed across China in 1961~2017

摘要: 对我国多年风速变化规律的研究有助于我们对风能更好的利用。利用CN05.1格点化数据集，采用线性分析趋势、层次聚类、高斯混合模型、k-means、谱聚类等方法对我国1961~2015年的风速时空变化规律进行了研究。研究表明：我国1961~2017年风速的趋势变化在空间分布上呈现出差异，但变化趋势大致相同，多年平均风速少部地区略有增加，整体呈现显著减小的趋势；我国北部地区风速普遍高于我国南方一带；我国西北部及东部地区的风速整体偏大，中部地区风速最小。

Abstract: The study of wind speed variation in China for many years is helpful for us to make better use of wind energy. Using CN05.1 lattice data set, the temporal and spatial variation law of wind speed in China from 1961 to 2015 was studied by linear analysis trend, hierarchical clustering, Gaussian mixture model, k-means and spectral clustering. The research shows that the trend change of wind speed in China from 1961 to 2017 is different in spatial distribution, but the change trend is roughly the same. The average wind speed increases slightly in areas with few years, and the overall trend shows a significant decrease; the wind speed in northern China is generally higher than that in southern China. The wind speed in the northwest and east of China is relatively large, while the wind speed in the central region is the smallest.