Modelling the Wind Speed Oscillation Dynamics
We present a detailed nonlinear time series analysis of the daily mean wind speed data measured at COCHIN/WILLINGDON (Latitude: +9.950, Longitude: +76.267 degrees, Elevation: 3 metres) from 2000 to 2010 using tools of non-linear dynamics. The results of the analysis strongly suggest that the underlying dynamics is deterministic, low-dimensional and chaotic indicating the possibility of accurate short term prediction. The chaotic behaviour of wind dynamics explains the presence of periodicities amidst random like fluctuations found in the wind speed data, which forced many researchers to model wind dynamics by stochastic models previously. While most of the chaotic systems reported in the literature are either confined to laboratories or theoretical models, this is another natural system showing chaotic behaviour.
KeywordsWind Speed Mutual Information Lyapunov Exponent Total Electron Content Chaotic Behaviour
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- Kumar, K.S., George, B., Renuka, G., Kumar, C.V.A., Venugopal, C.: Analysis of the fluctuations of the total electron content (TEC) measured at Goose Bay using the tools of nonlinear methods. J. Geophys. Res. 109, A02308 (2004), doi:10.1029/2002JA009768Google Scholar