天氣小觀:太平洋依舊熱鬧,西風帶南移 - 颱風討論

By Freda
at 2015-08-09T10:15
at 2015-08-09T10:15
Table of Contents
天氣小觀:太平洋依舊熱鬧,西風帶南移,太平洋高壓往南退
(以下白話說明)
蘇迪勒颱風的強勁風雨橫掃台灣後,
進入福建,當地也造成許多災情。
不過太平洋高壓西側勢力轉為南北向,讓蘇迪勒轉北
並且預報太平洋高壓再往蘇迪勒南邊伸展
預計蘇迪勒大幅減弱後會再轉東北最終併入西風帶。
結束蘇迪勒的一生。
不過西太平洋目前季風槽還是處於活躍,
熱帶擾動持續消長中,
模式預報,一周後期,澳大利亞出現強冷高壓,
偏南風從南半球衝到西太平洋,
過赤道進入北半球,
轉成西南季風加強與太平洋高壓偏東風的輻合
因此模式預報,一周後期,關島東方會有新的颱風產生。
後期的動向值得關注。
只是大氣環境屆時已與蘇迪勒颱風當時的情況不同了。
八月初太平洋高壓盤據日本上空,蘇迪勒偏西移動
而這次有了一些不同。
浩浩蕩蕩的太平洋高壓北移到日本後沒多久,
就遇上北極渦旋宣戰,戰場掀起的波瀾,
就從大氣高層夏冬大氣系統最強魔王-南亞高壓V.S北極渦旋之戰開始。
上週起北極渦旋瞄準北亞大陸,展開攻擊,
北亞許多地區受北極冷空氣南下降溫,
部分地區受冷氣團侵襲掉到10度以下,
並且本周起,北極渦旋對北亞的力道仍然持續,
冷空氣源源不斷從北極入侵,
南亞高壓的北側勢力受到嚴重挑戰。
冷空氣從西西伯利亞南下後,整個西風帶進入震盪,
隨著西風槽東移,冷空氣逐漸進入東亞的北方大陸盤據,
一周後期,西風帶影響勢力從北緯40~45度向南移到35~40度,
連帶日韓地區都重新進入西風帶影響勢力。
象徵著冬季系統的影響力迫使太平洋高壓往南退。
不過儘管冬季系統初試啼聲,夏季系統仍然強大,
大本營青藏高原仍然是一個發燙的大熱源,
熱力四射的暖空氣向東北延伸到新疆甘肅,甚至蒙古南方一帶。
因此南亞高壓主宰下,依舊坐穩南亞到東亞地區的高空。
而台灣未來一周處於夏季西南季風影響,
模式預報,後期太平洋高壓勢力調整南移,
分裂高壓的中心往台灣移動。
因此本周起,台灣天氣由不穩定漸漸轉為炎熱穩定。
(以上供參囉)
--
(以下白話說明)
蘇迪勒颱風的強勁風雨橫掃台灣後,
進入福建,當地也造成許多災情。
不過太平洋高壓西側勢力轉為南北向,讓蘇迪勒轉北
並且預報太平洋高壓再往蘇迪勒南邊伸展
預計蘇迪勒大幅減弱後會再轉東北最終併入西風帶。
結束蘇迪勒的一生。
不過西太平洋目前季風槽還是處於活躍,
熱帶擾動持續消長中,
模式預報,一周後期,澳大利亞出現強冷高壓,
偏南風從南半球衝到西太平洋,
過赤道進入北半球,
轉成西南季風加強與太平洋高壓偏東風的輻合
因此模式預報,一周後期,關島東方會有新的颱風產生。
後期的動向值得關注。
只是大氣環境屆時已與蘇迪勒颱風當時的情況不同了。
八月初太平洋高壓盤據日本上空,蘇迪勒偏西移動
而這次有了一些不同。
浩浩蕩蕩的太平洋高壓北移到日本後沒多久,
就遇上北極渦旋宣戰,戰場掀起的波瀾,
就從大氣高層夏冬大氣系統最強魔王-南亞高壓V.S北極渦旋之戰開始。
上週起北極渦旋瞄準北亞大陸,展開攻擊,
北亞許多地區受北極冷空氣南下降溫,
部分地區受冷氣團侵襲掉到10度以下,
並且本周起,北極渦旋對北亞的力道仍然持續,
冷空氣源源不斷從北極入侵,
南亞高壓的北側勢力受到嚴重挑戰。
冷空氣從西西伯利亞南下後,整個西風帶進入震盪,
隨著西風槽東移,冷空氣逐漸進入東亞的北方大陸盤據,
一周後期,西風帶影響勢力從北緯40~45度向南移到35~40度,
連帶日韓地區都重新進入西風帶影響勢力。
象徵著冬季系統的影響力迫使太平洋高壓往南退。
不過儘管冬季系統初試啼聲,夏季系統仍然強大,
大本營青藏高原仍然是一個發燙的大熱源,
熱力四射的暖空氣向東北延伸到新疆甘肅,甚至蒙古南方一帶。
因此南亞高壓主宰下,依舊坐穩南亞到東亞地區的高空。
而台灣未來一周處於夏季西南季風影響,
模式預報,後期太平洋高壓勢力調整南移,
分裂高壓的中心往台灣移動。
因此本周起,台灣天氣由不穩定漸漸轉為炎熱穩定。
(以上供參囉)
--
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