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Having answered the question why the empirical frequency curve of annual extreme wind speeds at Tanggu, Tianjin of China does not fit the Pearson-Ⅲ type, the authors obtained a better fitting for the Weibull distribution through extremum analysis, and found out a better numerical solution for estimating the Weibull distribution parameters by a new iterative technique. The fitting results of annual extreme wind speed have been proved to be quite satisfactory by using the x2 criterion and Kolmogorov criterion.
Having answered the question why the empirical frequency curve of annual extreme wind speeds at Tanggu, Tianjin of China does not fit the Pearson-III type, the authors obtained a better fitting for the Weibull distribution through extremum analysis, and found out a better numerical solution for estimating the Weibull distribution parameters by a new iterative technique. The fitting results of annual extreme wind speed have been proved to be quite satisfactory by using the x2 criterion and Kolmogorov criterion.