台灣西海岸與中國東南方形成類似喇叭開口的形狀，再加上台灣海峽兩側分別有中央山脈以及位於中國東南方的武夷山脈，因此愈往台灣海峽之西南邊走向，受到地形的影響使得在台灣海峽區域產生局部風速增加，特別是秋冬季及春季時的風向多為東北風，風的路徑會經過更多地形上的阻擋，改變局部氣壓梯度而使風速加快，因此台灣不論是陸域風電或在離岸風場的建置上都有著極大發展的潛能。本研究使用中央氣象局彭佳嶼氣象站、中央氣象局新屋氣象站、標準檢驗局的台中港測風塔及彰濱外海台電測風塔的風速資料進行由北到南的地形效應探討。
為了討論進一步討論台中港測風塔與台電測風塔的大氣紊流特性，本研究使用小波轉換分析兩地風速資料，並比較兩者之間在盛行東北季風時期之風力強度與風通過地形影響形成的，並搭配簡易的地形風洞實驗說明北風經過台灣中央山脈時在迎風面與背風側產生的局部風速變化。

With the rise of environmental consciousness, various countries have started to develop green energy power generation. The best green energy power is wind power in Taiwan because of the geographical location of Taiwan. The wind speed will increase in northwest coast of Taiwan when the northeastern monsoon prevails in Taiwan. In this study, wind speed data from four sites will be analyzed, which are Pengchiayu Weather Station in northern Taiwan, Xin Wu Weather Station, wind tower of Bureau of Standards in Taichung Harbor, and meteorological tower located at offshore of Changhua.
In addition to analyzing the wind speed variation along the coastal of Taiwan from north to central part of the country, Wavelet transform is also used to analyze the wind speed data from the wind tower of Taichung Harbor and meteorological tower located at offshore of Changhua. Both Wavelet transform and Fourier transform can resolve the characteristic frequency of the signal, however the advantage of Wavelet transform is that it can adjust the upper and lower limits of frequency which we would like to analyze but also observe the instantaneous frequency condition. In order to study the atmospheric turbulence which caused by northeast monsoon flowing through the Taiwan terrain, here also investigates the turbulence intensity and wind speed signal characteristic at that two locations.

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