天氣小觀:冬夏系統交手頻繁,首重週日雷暴鋒面 - 颱風討論
By Isla
at 2022-03-24T20:50
at 2022-03-24T20:50
Table of Contents
太平洋高壓崛起後,冬夏大氣系統頻頻交手,
冬季系統以一波接著一波的西風槽發動侵襲,
夏季系統以一股無形的高壓暖氣牆不斷反擊,
模式顯示未來一週竟然有四次冷暖交戰局面。
1.
首先是日本外海的變性高壓帶來副熱帶海洋氣團的回南風
遭遇東亞南方的冷涼空氣,逐漸醞釀溫帶氣旋的發展。
台灣則是副熱帶海洋氣團回南風爬升涼空氣帶來些許降雨。
2.
再來就是未來一週首要重點:週日的雷暴鋒面報到,
明起熱帶海洋氣團北上,黃海出現溫帶氣旋,帶出東亞鋒面;
隨著東亞西風槽週六轉直南伸,
蒙古高原冷氣團往南,交戰太平洋熱帶氣團,
在冬季系統的初始強攻下,鋒面南壓往台灣接近,週六入夜後逐漸壓到台灣上空,
值得注意的是,由於蒙古冷高壓規模夠大,模式再度修正了兩段式的鋒面結構,
改為一段式鋒面從週日到週二白天徘迴在台灣上空,
這裡醞釀兩波冷暖交戰:
週六到週日的冷高壓東北季風帶來東亞北方冷空氣,
交戰與先前變性高壓加入太平洋高壓系統帶來熱帶海洋氣團,
冷熱差異最大,鋒面伴隨著雷暴在台灣高空響徹。
3.
週一到週二冷高壓出海東移變性的過程,取代了原先的變性高壓偏南風,
台灣風場由東北風轉東風,
東北風的冷空氣對撞東風帶來的副熱帶氣團,隨風向轉變,
副熱帶氣團的暖勢力加強,
鋒面也從南海北部移到台灣海峽,台灣仍在冷暖交戰區中。
4.
週三以後,新的西伯利亞冷高壓南下,帶來極地冷氣團沿著東亞沿海而下,
此時的東移的變性高壓再度加入了太平洋高壓系統,
副熱帶海洋氣團與極地冷氣團激烈對撞,週三晚又要留意新的雷暴鋒面通過台灣了。
一週過後,
由於西伯利亞冷高壓帶來強冷空氣,又變成東北季風型態的冬季型淒風苦雨地形雨。
只能說,今年春季的變奏曲樂章彈得真快,冬夏大氣系統在台灣高空的交戰目不暇給。
(以上供參囉)
--
冬季系統以一波接著一波的西風槽發動侵襲,
夏季系統以一股無形的高壓暖氣牆不斷反擊,
模式顯示未來一週竟然有四次冷暖交戰局面。
1.
首先是日本外海的變性高壓帶來副熱帶海洋氣團的回南風
遭遇東亞南方的冷涼空氣,逐漸醞釀溫帶氣旋的發展。
台灣則是副熱帶海洋氣團回南風爬升涼空氣帶來些許降雨。
2.
再來就是未來一週首要重點:週日的雷暴鋒面報到,
明起熱帶海洋氣團北上,黃海出現溫帶氣旋,帶出東亞鋒面;
隨著東亞西風槽週六轉直南伸,
蒙古高原冷氣團往南,交戰太平洋熱帶氣團,
在冬季系統的初始強攻下,鋒面南壓往台灣接近,週六入夜後逐漸壓到台灣上空,
值得注意的是,由於蒙古冷高壓規模夠大,模式再度修正了兩段式的鋒面結構,
改為一段式鋒面從週日到週二白天徘迴在台灣上空,
這裡醞釀兩波冷暖交戰:
週六到週日的冷高壓東北季風帶來東亞北方冷空氣,
交戰與先前變性高壓加入太平洋高壓系統帶來熱帶海洋氣團,
冷熱差異最大,鋒面伴隨著雷暴在台灣高空響徹。
3.
週一到週二冷高壓出海東移變性的過程,取代了原先的變性高壓偏南風,
台灣風場由東北風轉東風,
東北風的冷空氣對撞東風帶來的副熱帶氣團,隨風向轉變,
副熱帶氣團的暖勢力加強,
鋒面也從南海北部移到台灣海峽,台灣仍在冷暖交戰區中。
4.
週三以後,新的西伯利亞冷高壓南下,帶來極地冷氣團沿著東亞沿海而下,
此時的東移的變性高壓再度加入了太平洋高壓系統,
副熱帶海洋氣團與極地冷氣團激烈對撞,週三晚又要留意新的雷暴鋒面通過台灣了。
一週過後,
由於西伯利亞冷高壓帶來強冷空氣,又變成東北季風型態的冬季型淒風苦雨地形雨。
只能說,今年春季的變奏曲樂章彈得真快,冬夏大氣系統在台灣高空的交戰目不暇給。
(以上供參囉)
--
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