暴風圈侵襲機率 - 颱風討論

By Tracy
at 2013-07-10T13:15
at 2013-07-10T13:15
Table of Contents
http://www.cwb.gov.tw/V7/prevent/typhoon/Data/PTA_NEW/imgs/products/
2013SOULIK-071000_WSP_0_download.png
我想你在問的是這張圖對吧?
圖上的粉紅色範圍是指過去的「七級風暴風半徑影響範圍」,這點容先敘明。
接著我們來看機率的部分,顏色越深,機率越高,這點我想應該也不會認錯。
你有疑問的地方在於,為什麼120小時之後80%區塊仍舊落在東部外海,而沒有
畫過去西部海域對吧?
這是因為,這張圖是要告訴使用者,未來120小時之內,七級風暴風半徑最有可
能影響到的範圍。這些範圍會因為移動速度,通過時的狀態,以及各類難以預
測的情形(例如減弱消失)而有所改變。
所以在繪圖時,離中心越遠的地方,暴風半徑通過率越低,是反應了颱風路徑
的不確定性。你等到下次更新再去看這張圖,就會發現原先顏色淺的地方,有
可能已經變成深色了。
這樣解釋可以理解嗎?
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話說,我在考慮要不要提早手動置底FAQ了 XDDDD
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