還是風神~ - 颱風討論
By Xanthe
at 2008-06-22T23:55
at 2008-06-22T23:55
Table of Contents
經過兩天的纏綿悱惻~風神總算在今晚出海了
出海的位置在呂宋西邊的巴丹(?)半島
中心環流慘遭呂宋島地形蹂躪~目前是呈現半露出的狀態
北半部的環流幾乎是空的
至於目前在南海上那個大雲團是環流西北風跟西南風的水平輻合處
同時也是垂直風切向量的下風處
不論輻合或輻散都相當不錯~西南風水氣又旺盛~所以長出了這麼一大團東西來
實際中心位置在雲團的東北角
當然以目前風神中心的強度來看~遇上這麼強的對流雲團的輻合氣流
勢必會有被拉扯跟吸引的作用
而且也被迫一定要跟它整合~因此今晚中心可能會因為調整變化而出現亂跑現象
就算有較大變動應該也不能算是中心轉移(因為根本沒有另一個明顯的環流中心)
很多模式的最新資料也都有作出颱風中心往西偏移一小段距離的情況
應該就是短暫的整合過程所導致
不過最後的引導權仍在颱風東邊的副高壓手上
因此颱風還是會如原本預期的北上靠近台灣西南海域
明天大概還不會太近~應該仍在東沙島東南海域~有可能還在整合過程中
颱風北面的環流實在欠奉~可能白天都還不會對天氣有太大影響
只有東南部跟恆春半島雲量逐漸增多~海面風浪轉強
晚間以後颱風繼續靠近恆春西南海面
環流風場跟地形交會後~迎風的東部東南部以及恆春半島降雨會慢慢明顯起來
後天到大後天(24~25號)仍是颱風將經過台灣附近的時間點
同時因為颱風走到高壓西北邊緣~動向的右偏分量增加
以目前的演變情況來說似乎有直接登陸的可能
也就是有機會撞進中南部上空
但是影響情況倒底會有多嚴重還得看颱風到時的強度
南海東北部的強垂直風切環境實在不太有利它未來的發展
先簡單聊到這邊囉~
明天早上要參加一整天的研討會..囧
所以這篇就先代替一下到目前為止的看法
明天晚上再來看看變化如何..Orz
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Tags:
颱風
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