Authors: Saeid Eslamian, Hadi Hassanzadeh, Mohammad Javad Khordadi
Addresses: Department of Water, Isfahan University of Technology, Isfahan, 84156, Iran. ' Department of Water, Isfahan University of Technology, Isfahan, 84156, Iran. ' Department of Water, Isfahan University of Technology, Isfahan, 84156, Iran
Abstract: The purpose of this study is to detect an existing trend in wind speed and to evaluate the effect of climate change on frequency analysis of wind speed in Iran. Twenty-two stations with a length of records higher than 50 years have been selected. Five statistical methods that were used to detect the trends are Mann-Kendall, Spearman-Conley, cumulative deviation, autocorrelation coefficient and regression analysis. It is revealed that 11 stations have a positive or a negative trend while the rest has no trend. Climate change leads to a lack of homogeneity in a number of stations. Therefore, it is impossible to use frequency analysis for those stations. One appropriate approach is dividing the stations into two smaller parts, and for each part, frequency analysis could be taken if the part is homogenous.
Keywords: climate change; frequency analysis; wind speed; linear trends; Iran.
International Journal of Global Energy Issues, 2009 Vol.32 No.3, pp.295 - 304
Published online: 30 Dec 2009 *Full-text access for editors Access for subscribers Purchase this article Comment on this article