But Tzeng also noted, "The typhoons are taking a different course now, so Taiwan hasn't been struck any more often." "The frequency of typhoons is not the issue; it's their course that matters." Tzeng explains that a typhoon's course is controlled by the general circulation of the atmosphere. In the past, a high-pressure system known as the Pacific High was dominant.
「颱風次數不是重點，問題在行走的路線，」中央大學大氣科學系副教授曾仁佑解釋，颱風路徑受大氣環流牽制，當太平洋高壓旺盛，颱風遭外圍環流形成的高、低壓牽扯，很快被帶出台灣。