假雙眼!? - 颱風討論
By Sierra Rose
at 2008-09-14T17:03
at 2008-09-14T17:03
Table of Contents
這個辛樂克不愧是有神名的颱風
從頭到尾的變化都是這樣的神奇~
雖說早上颱風中心從宜蘭近海北繞時~北部海面出現大範圍的弧狀回波時
就有猜測說颱風將在北部海面重組環流
果然中心飛也似的經過東北角~基隆北海岸後跑到北部近海
也就是那個弧狀回波圍繞的大致中心處
沒想到環流南側的西風爬山給了尚未穩固的環流中心一個往西的推力
(請想像有個人手按圍牆頂支撐施力翻牆的畫面來類比~)
一下子被往西拋出幾十公里
好不容易開始穩定下來
弧狀回波中心的西南側(靠近桃竹外海)處似乎有另一小小的旋轉中心出現
並且快速的往西南~南~東南回旋移向桃竹沿海
目前已經在桃園的沿海處
從下午的風向變化可知這個小環流的確存在
而CWB的定位則跟著原本弧狀回波所繞出的大環流而走
小環流往南往東~大環流中心就緩慢西進
基本上CWB的方式應該是沒有錯~畢竟大環流才是主要的環流跟質量中心
而小環流可能在輕掠西北沿海後逐漸跟大環流中心重合
但是這樣一來產生類似雙眼的詭異現象
大環流中心被拖住而暫時也動不了
中南部山區的雨也就一直下個沒完
預估入夜後兩中心會慢慢重合穩定
北邊的短槽似乎也要到了~颱風慢慢北偏的機會還是最大
但是會不會在轉向過程中意外擦邊或侵入閩浙沿海就很難講了
畢竟目前的位置已經偏西許多
最後還是提醒中南部山區的朋友持續嚴防豪雨的現象
--
從頭到尾的變化都是這樣的神奇~
雖說早上颱風中心從宜蘭近海北繞時~北部海面出現大範圍的弧狀回波時
就有猜測說颱風將在北部海面重組環流
果然中心飛也似的經過東北角~基隆北海岸後跑到北部近海
也就是那個弧狀回波圍繞的大致中心處
沒想到環流南側的西風爬山給了尚未穩固的環流中心一個往西的推力
(請想像有個人手按圍牆頂支撐施力翻牆的畫面來類比~)
一下子被往西拋出幾十公里
好不容易開始穩定下來
弧狀回波中心的西南側(靠近桃竹外海)處似乎有另一小小的旋轉中心出現
並且快速的往西南~南~東南回旋移向桃竹沿海
目前已經在桃園的沿海處
從下午的風向變化可知這個小環流的確存在
而CWB的定位則跟著原本弧狀回波所繞出的大環流而走
小環流往南往東~大環流中心就緩慢西進
基本上CWB的方式應該是沒有錯~畢竟大環流才是主要的環流跟質量中心
而小環流可能在輕掠西北沿海後逐漸跟大環流中心重合
但是這樣一來產生類似雙眼的詭異現象
大環流中心被拖住而暫時也動不了
中南部山區的雨也就一直下個沒完
預估入夜後兩中心會慢慢重合穩定
北邊的短槽似乎也要到了~颱風慢慢北偏的機會還是最大
但是會不會在轉向過程中意外擦邊或侵入閩浙沿海就很難講了
畢竟目前的位置已經偏西許多
最後還是提醒中南部山區的朋友持續嚴防豪雨的現象
--
Tags:
颱風
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