Abstract
Temporal-spatial cross-correlation analysis of non-stationary wind speed time series plays a crucial role in wind field reconstruction as well as in wind pattern recognition. Firstly, the near-surface wind speed time series recorded at different locations are studied using the detrended fluctuation analysis (DFA), and the corresponding scaling exponents are larger than 1. This indicates that all these wind speed time series have non-stationary characteristics. Secondly, concerning this special feature (i.e., non-stationarity) of wind signals, a cross-correlation analysis method, namely detrended cross-correlation analysis (DCCA) coefficient, is employed to evaluate the temporal-spatial cross-correlations between non-stationary time series of different anemometer pairs. Finally, experiments on ten wind speed data synchronously collected by the ten anemometers with equidistant arrangement illustrate that the method of DCCA cross-correlation coefficient can accurately analyze full-scale temporal-spatial cross-correlation between non-stationary time series and also can easily identify the seasonal component, while three traditional cross-correlation techniques (i.e., Pearson coefficient, cross-correlation function, and DCCA method) cannot give us these information directly.
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Foundation item: Projects(61271321, 61573253, 61401303) supported by the National Natural Science Foundation of China; Project(14ZCZDSF00025) supported by Tianjin Key Technology Research and Development Program, China; Project(13JCYBJC17500) supported by Tianjin Natural Science Foundation, China; Project(20120032110068) supported by Doctoral Fund of Ministry of Education of China
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Zeng, M., Li, Jh., Meng, Qh. et al. Temporal-spatial cross-correlation analysis of non-stationary near-surface wind speed time series. J. Cent. South Univ. 24, 692–698 (2017). https://doi.org/10.1007/s11771-017-3470-4
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DOI: https://doi.org/10.1007/s11771-017-3470-4