Abstract—Wind speed data for 2010 at eight stations located
in three coastal areas of Taiwan were used to fit three kinds of
Weilbull distributions in this study. Bimodal Gamma-Weibull
distribution is examined the best among three distributions for
all wind speed data comparing three tests for goodness-of-fit.
Key indicators for a bimodal distribution are the weighting
parameter approaching 0.5, variation of peak speeds of monthly
distribution and peak speed ratio. Topographical effect of high
central mountains of Taiwan on offshore wind speeds at
southern Taiwan is stronger than at northern Taiwan. It
explains that the distribution of offshore wind speeds is bimodal
at northern Taiwan and unimodal at southern Taiwan.
Index Terms—Offshore/onshore wind speed, bimodal Weibull distribution, goodness-of-fit.
Jui-Fang Tsai, Hsien-Kuo Chang, and Jin-Cheng Liou are with Department of Civil Engineering, National Chiao Tung University, Hsinchu 300, Taiwan (e-mail: email@example.com, firstname.lastname@example.org, email@example.com).
Lian-Sheng Ho is with Harbor and Marine Technology Center, Taichung435, Taiwan (e-mail: firstname.lastname@example.org).
Cite: Jui-Fang Tsai, Hsien-Kuo Chang, Jin-Cheng Liou, and Lian-Sheng Ho, "Onshore and Offshore Wind Speed Distributions at the Western Waters in Taiwan," International Journal of Environmental Science and Development vol. 7, no. 12, pp. 867-874, 2016.