To see the impact on the most common cause of disaster in Taiwan, typhoons, Associate Professor Tzeng Ren-yow of National Central University's atmospheric science department examined Pacific typhoon data from the last 100 years. Tzeng discovered that the average number of typhoons has risen from 17 per year in the early 20th century to 29 per year over the last 15 years.
至於最常在台灣造成災難的颱風，研究人員整理近百年來的太平洋颱風資料，發現颱風成形次數由二十世紀初的每年約十七次，增加到最近十五年的二十九次，但因為颱風侵襲路徑改變，侵台次數並未增加。