天氣速觀:鳳凰颱風接近巴士海峽 - 颱風討論
By Queena
at 2019-11-20T10:59
at 2019-11-20T10:59
Table of Contents
天氣速觀:鳳凰颱風接近巴士海峽
海鷗颱風減弱後,另一個鳳凰颱風形成,
並且一改原本模式路徑,更偏北趨向巴士海峽。
不過,大氣環境和海鷗不同了,
北方西風槽已東移遠離,高空沒有西風槽,地面高壓也已出海,
因此這次鳳凰颱風沒有秋颱共伴,但外圍環流仍會台灣東部海面逼近,
對鳳凰更不利的是巴士海峽的海溫已偏低,
時序漸漸接近11月底,秋颱共伴的季節結束也是因為海溫變低,
地面場轉由高壓控制,偏南風很難上到台灣形成共伴雨帶。
高空場更不用說,太平洋高壓不是東退就是南移,又或崩潰更難達成秋颱共伴。
因此模式預報認為這次的共伴條件比起海鷗更差。
看來,這次鳳凰颱風要注意的還是本身的外圍環流。
模式顯示,
鳳凰颱風進入巴士海峽後滯留,
由於北方沒有明顯西風槽,東方太平洋高壓又不西伸,
巴士海峽海溫偏低,
於是鳳凰颱風在巴士海峽逐漸消散的機率高。
大環境對夏季系統已時不我與。
當然,鳳凰颱風的外圍環流還是要注意(東北部)。
(快速說說囉)
--
海鷗颱風減弱後,另一個鳳凰颱風形成,
並且一改原本模式路徑,更偏北趨向巴士海峽。
不過,大氣環境和海鷗不同了,
北方西風槽已東移遠離,高空沒有西風槽,地面高壓也已出海,
因此這次鳳凰颱風沒有秋颱共伴,但外圍環流仍會台灣東部海面逼近,
對鳳凰更不利的是巴士海峽的海溫已偏低,
時序漸漸接近11月底,秋颱共伴的季節結束也是因為海溫變低,
地面場轉由高壓控制,偏南風很難上到台灣形成共伴雨帶。
高空場更不用說,太平洋高壓不是東退就是南移,又或崩潰更難達成秋颱共伴。
因此模式預報認為這次的共伴條件比起海鷗更差。
看來,這次鳳凰颱風要注意的還是本身的外圍環流。
模式顯示,
鳳凰颱風進入巴士海峽後滯留,
由於北方沒有明顯西風槽,東方太平洋高壓又不西伸,
巴士海峽海溫偏低,
於是鳳凰颱風在巴士海峽逐漸消散的機率高。
大環境對夏季系統已時不我與。
當然,鳳凰颱風的外圍環流還是要注意(東北部)。
(快速說說囉)
--
Tags:
颱風
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