天氣小觀:未來一週,2020歲末年終寒潮爆發 - 颱風討論
By Charlie
at 2020-12-26T11:31
at 2020-12-26T11:31
Table of Contents
2020歲末年終,
先前冬季的地形雨總算緩和下來,正是因為亞洲的西風帶開始震盪,
而,迎接台灣的將是跨年東亞寒潮爆發。
極地寒潮對東亞發動侵襲,對台灣行動發起日:D day為12月30日(週三)
D day_3天以前(週六) 此時的東亞南方一片沉浸在溫和暖陽下
目前北極渦旋位於北極,
百帕高度場15200米,不算特強,但也不弱,算是一般強烈等級,
即便所在位置的北極區正處於永夜大環境;然而,
模式預報,未來一週會稍微減弱,這種永夜大環境下的不對勁。
先前,入冬一直位於副極地白令海上空平流層的增溫開始加強,
反渦旋開始向北及渦旋推擠,
長期模式預報來看,
百帕高度場的北極渦旋中心退往
歐洲東部極區 => 歐亞大陸極區 => 西伯利亞極區 => 向南進入西伯利亞
這種行星大氣運動的過程長達半個月以上,
如此一來,
整個西伯利亞長期處於北極氣團駐守下,超級大冰庫的情況(可達夭壽的零下40度以下)。
只要有一個引信觸發,就是寒潮爆發。
而未來一週就是中亞脊引信觸發東亞寒潮爆發!
大氣中低層,即將到來的是強烈負北極震盪,
第一道中亞脊東移,把堆積在西伯利亞許久的極地超冷凍氣團,
一部分獲得向南侵襲的許可,
冬季系統北極氣團下達首次東亞全面寒潮爆發。
模式看來,這波是一個標準的東亞大寒潮,台灣也會非常冷;
D day 前3天(日):中亞脊往北延伸並,歐洲地面高壓1050百帕移向西伯利亞關鍵發展區
D day 前2天(一):西風大橫槽發展,西伯利亞冷高壓發展至1065百帕以上的超級冷高壓
D day 前1天(二):西風大槽轉直,地面冷高壓分裂進入蒙古,展開東亞寒潮爆發皮皮挫
D day後,台灣就受這波東亞寒潮爆發影響下,預計有3天寒流+1天冷氣團(1月2日)
因此,真正回溫要到1月3日,穿厚衣,有多厚穿多厚了~~
至於更長期的大環境來看,原先預報的中亞阻塞高壓被拿掉了,
因此,下一波寒潮爆發暫時看不到囉。
如果北極渦旋再轉為異常弱極渦,
那麼,
異常弱極渦事件對東亞南方影響: 先冷..後暖...(長期暖)
(以上供參囉)
--
先前冬季的地形雨總算緩和下來,正是因為亞洲的西風帶開始震盪,
而,迎接台灣的將是跨年東亞寒潮爆發。
極地寒潮對東亞發動侵襲,對台灣行動發起日:D day為12月30日(週三)
D day_3天以前(週六) 此時的東亞南方一片沉浸在溫和暖陽下
目前北極渦旋位於北極,
百帕高度場15200米,不算特強,但也不弱,算是一般強烈等級,
即便所在位置的北極區正處於永夜大環境;然而,
模式預報,未來一週會稍微減弱,這種永夜大環境下的不對勁。
先前,入冬一直位於副極地白令海上空平流層的增溫開始加強,
反渦旋開始向北及渦旋推擠,
長期模式預報來看,
百帕高度場的北極渦旋中心退往
歐洲東部極區 => 歐亞大陸極區 => 西伯利亞極區 => 向南進入西伯利亞
這種行星大氣運動的過程長達半個月以上,
如此一來,
整個西伯利亞長期處於北極氣團駐守下,超級大冰庫的情況(可達夭壽的零下40度以下)。
只要有一個引信觸發,就是寒潮爆發。
而未來一週就是中亞脊引信觸發東亞寒潮爆發!
大氣中低層,即將到來的是強烈負北極震盪,
第一道中亞脊東移,把堆積在西伯利亞許久的極地超冷凍氣團,
一部分獲得向南侵襲的許可,
冬季系統北極氣團下達首次東亞全面寒潮爆發。
模式看來,這波是一個標準的東亞大寒潮,台灣也會非常冷;
D day 前3天(日):中亞脊往北延伸並,歐洲地面高壓1050百帕移向西伯利亞關鍵發展區
D day 前2天(一):西風大橫槽發展,西伯利亞冷高壓發展至1065百帕以上的超級冷高壓
D day 前1天(二):西風大槽轉直,地面冷高壓分裂進入蒙古,展開東亞寒潮爆發皮皮挫
D day後,台灣就受這波東亞寒潮爆發影響下,預計有3天寒流+1天冷氣團(1月2日)
因此,真正回溫要到1月3日,穿厚衣,有多厚穿多厚了~~
至於更長期的大環境來看,原先預報的中亞阻塞高壓被拿掉了,
因此,下一波寒潮爆發暫時看不到囉。
如果北極渦旋再轉為異常弱極渦,
那麼,
異常弱極渦事件對東亞南方影響: 先冷..後暖...(長期暖)
(以上供參囉)
--
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