Statistical and spectral analysis of the wind regime in the area of Catalonia

Gavaldà, Jna.; Camps, J.; Díaz, Francesc

doi:10.1007/bf00866094

“…Their analysis shows that the deterministic component has 1-year, 24-h and 12-h periods. These cycles have also been observed by other authors in surface wind studies (Brett and Tuller, 1991;Gavaldá et al, 1992). The 1-year and 24-h periods are the natural Earth cycles.…”

Section: R C Sreelekshmi Et Al: Deterministic Nature Of Surface Wisupporting

confidence: 84%

Deterministic nature of the underlying dynamics of surface wind fluctuations

Sreelekshmi

¹

,

Asokan²,

Kumar

³

2012

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Abstract. Modelling the fluctuations of the Earth's surface wind has a significant role in understanding the dynamics of atmosphere besides its impact on various fields ranging from agriculture to structural engineering. Most of the studies on the modelling and prediction of wind speed and power reported in the literature are based on statistical methods or the probabilistic distribution of the wind speed data. In this paper we investigate the suitability of a deterministic model to represent the wind speed fluctuations by employing tools of nonlinear dynamics. We have carried out a detailed nonlinear time series analysis of the daily mean wind speed data measured at Thiruvananthapuram (8.483 • N,76.950 • E) from 2000 to 2010. The results of the analysis strongly suggest that the underlying dynamics is deterministic, low-dimensional and chaotic suggesting the possibility of accurate short-term prediction. As most of the chaotic systems are confined to laboratories, this is another example of a naturally occurring time series showing chaotic behaviour.

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“…Harmonic analysis applied to wind speed and direction series shows that the main frequencies correspond to the 1-year, 24-h and 12-h periods (Figures 9 and 10). The same cycles have also been observed by other authors in surface wind studies (Brett and Tuller, 1991;Gavaldà et al, 1992). The 1-year and 24-h periods are the natural earth cycles.…”

Section: Data Characterizationsupporting

confidence: 86%

“…Some other works (Ishida, 1990;Brett and Tuller, 1991;Frisch et al, 1991;Gavaldà et al, 1992;Schumann, 1992) tried to characterize the cyclic variations of wind speed and direction time series (not only to ground level data) by spectral analysis. Wickle et al (1995) used the information given by the analysis to model the deterministic component of the series.…”

Section: Introductionmentioning

confidence: 99%

Analysis and modelling of time series of surface wind speed and direction

Martín

¹

,

Cremades

²

,

Santabàrbara

³

1999

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This work presents a climatological study of winds at a particular site and proposes a simple model to simulate data time series of horizontal surface wind. The model relies on three major hypotheses: (i) speed and direction are treated as independent variables; (ii) wind can be expressed as the sum of a deterministic component (including trend and cyclical variations) plus a probabilistic or stochastic component; and (iii) both components (deterministic and stochastic) are independent. An hourly based 7 year wind series measured at the meteorological station in Almazora, located at the Spanish Mediterranean coast, is analyzed. Only the deterministic component of this series is simulated in accordance with the model proposed. Results indicate that the model is especially suitable for predicting wind at sites in which some cyclic pattern is expected.

show abstract

Analysis and modelling of time series of surface wind speed and direction

Martin

¹

,

Cremades

²

,

Santabàrbara

³

1999

View full text Add to dashboard Cite

This work presents a climatological study of winds at a particular site and proposes a simple model to simulate data time series of horizontal surface wind. The model relies on three major hypotheses: (i) speed and direction are treated as independent variables; (ii) wind can be expressed as the sum of a deterministic component (including trend and cyclical variations) plus a probabilistic or stochastic component; and (iii) both components (deterministic and stochastic) are independent. An hourly based 7 year wind series measured at the meteorological station in Almazora, located at the Spanish Mediterranean coast, is analyzed. Only the deterministic component of this series is simulated in accordance with the model proposed. Results indicate that the model is especially suitable for predicting wind at sites in which some cyclic pattern is expected. Copyright © 1999 Royal Meteorological Society

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Statistical and spectral analysis of the wind regime in the area of Catalonia

Cited by 10 publications

References 8 publications

Deterministic nature of the underlying dynamics of surface wind fluctuations

Deterministic nature of the underlying dynamics of surface wind fluctuations

Analysis and modelling of time series of surface wind speed and direction

Analysis and modelling of time series of surface wind speed and direction

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