辛樂克颱風-0911(晚報) - 颱風討論
By Ina
at 2008-09-11T23:04
at 2008-09-11T23:04
Table of Contents
自03年的杜鵑颱風之後
終於再看到一次這麼明顯的小眼繞大眼牆轉的雙眼現象
去年的聖帕雙眼雖然也很清楚卻沒有這樣的情況
雙眼牆雖然算是強颱風普遍可見的情況~
不過會出現這樣小眼旋繞的現象還是較少的
而這樣一打轉後~基本上颱風路線就必須看大(外眼)牆的中心來定了
辛樂克的情況跟杜鵑不同
當時杜鵑有相當明顯的引導駛流~
因此颱風路線呈現大方向西北西~其中帶有4~5次的小幅擺線狀跳動
辛樂克則仍然位於無明顯引導的情況下
雖然小眼繞著大眼壁內側旋繞~但是以大眼來說其實並沒有甚麼什麼移動..XD
目前辛樂克的小眼已經繞完一圈
第二圈也已經繞了一半
第一圈繞的半徑較大~第二圈繞的半徑就小了些
似乎顯示外眼牆已經有慢慢內縮的情況
跟文獻上所提到的觀察記載相當吻合
但是何時能真正完成置換還有待觀察
路線也必須要到眼牆置換穩固後才可以有比較明確的方向
至於大環境來說從12Z的資料來看似乎還是沒啥變化
西風槽已經更為東進到朝鮮半島上空
槽底位置還是偏高~西風底部勉強摸到濟州島附近
對颱風沒有顯著的勾引力量
颱風東側的高壓~日本東南的副高壓主體以及中國上空的西環高壓都還是按兵不動中
颱風東北面仍然有雲帶被東側高壓拉扯而往東北擴散
拉到琉球以東後順時針往南捲繞
但是颱風西側的雲層也仍有繼續西擴的跡象
暫時還是沒有看到決定性的引導條件出現
比較不同的是西日本上空在中低層有一個順時針反氣旋環流開始浮現
是否會是目前僵局打破的開端值得觀察
TD-16W則正在關東近海北上中
數值模式則仍然是持續認為稍後高壓主體會慢慢自16W以南加強西伸
迫使颱風仍將逆轉朝台灣靠近~接近後再往北偏~北偏的位置仍有差異
影響台灣最大的時間點仍是13~14號間
一切就有待觀察今晚到明天有無新的變化而定囉~
--
終於再看到一次這麼明顯的小眼繞大眼牆轉的雙眼現象
去年的聖帕雙眼雖然也很清楚卻沒有這樣的情況
雙眼牆雖然算是強颱風普遍可見的情況~
不過會出現這樣小眼旋繞的現象還是較少的
而這樣一打轉後~基本上颱風路線就必須看大(外眼)牆的中心來定了
辛樂克的情況跟杜鵑不同
當時杜鵑有相當明顯的引導駛流~
因此颱風路線呈現大方向西北西~其中帶有4~5次的小幅擺線狀跳動
辛樂克則仍然位於無明顯引導的情況下
雖然小眼繞著大眼壁內側旋繞~但是以大眼來說其實並沒有甚麼什麼移動..XD
目前辛樂克的小眼已經繞完一圈
第二圈也已經繞了一半
第一圈繞的半徑較大~第二圈繞的半徑就小了些
似乎顯示外眼牆已經有慢慢內縮的情況
跟文獻上所提到的觀察記載相當吻合
但是何時能真正完成置換還有待觀察
路線也必須要到眼牆置換穩固後才可以有比較明確的方向
至於大環境來說從12Z的資料來看似乎還是沒啥變化
西風槽已經更為東進到朝鮮半島上空
槽底位置還是偏高~西風底部勉強摸到濟州島附近
對颱風沒有顯著的勾引力量
颱風東側的高壓~日本東南的副高壓主體以及中國上空的西環高壓都還是按兵不動中
颱風東北面仍然有雲帶被東側高壓拉扯而往東北擴散
拉到琉球以東後順時針往南捲繞
但是颱風西側的雲層也仍有繼續西擴的跡象
暫時還是沒有看到決定性的引導條件出現
比較不同的是西日本上空在中低層有一個順時針反氣旋環流開始浮現
是否會是目前僵局打破的開端值得觀察
TD-16W則正在關東近海北上中
數值模式則仍然是持續認為稍後高壓主體會慢慢自16W以南加強西伸
迫使颱風仍將逆轉朝台灣靠近~接近後再往北偏~北偏的位置仍有差異
影響台灣最大的時間點仍是13~14號間
一切就有待觀察今晚到明天有無新的變化而定囉~
--
Tags:
颱風
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