天氣小觀:明起冷空氣大軍南下,模式偷調強?
在這時節,模式預報對冷空氣的掌握一直明顯變來變去,
最新模式預報,似乎又偷偷把冷空氣的強度調強了一些 XDDD,
其中部分模式預報甚至預報850帕6度線竟然接近台灣北部,甚至達台灣北部。
如此預報這麼明顯的冷空氣,看來可能比前幾天的冷空氣來的還猛!
至於規模更是大勝前幾天比較不像東北季風的類東北季風,
這次根本就是正統東北季風。
東北季風直接從蒙古/西伯利亞吹下來,
切斷了南方的太平洋高壓了脊,讓太平洋高壓東退
西風槽後的氣流直接從西伯利亞衝下來,台灣冷/涼好一陣子。
四月底了,這種冷空氣大舉南下,真的不多見啦。
很少在四月底還要如此關注北亞大陸的冬季系統,
事實上北極冷空氣排山倒海的往北亞大陸宣洩,
無視青藏高原已經變成熱源,
1032百帕的地面高壓在西伯利亞/蒙古發展中,
西伯利亞/蒙古高壓範圍非常龐大,
冷暖交戰的鋒面已經在長江流域到華南地區出現,
鋒前的對流已經開始影響台灣。
明天開始冷空氣大軍就要南下了,而且一連影響可達三天。
後續暖空氣反擊無力,大概要拖上一周才會熱回來。
事實上,北極冷空氣排山倒海往北亞南下,
不只影響了東亞,也影響了中亞。
預報一周尾聲,中亞也出現大槽,
冷空氣南下逼近轉為熱源的青藏高原被
撐不住北極氣團南下的加持,
一周過後,青藏高原頭上被澆了一大坨冷空氣。
果然是冬季系統的大進擊。
外套不能收呀
(快速說說,以上供參囉)
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※ 編輯: daron (123.192.194.253), 04/25/2017 22:38:45
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