天氣小觀:太平洋副高太強,阻高崩潰後寒潮只到 - 颱風討論
By Frederic
at 2016-01-01T11:45
at 2016-01-01T11:45
Table of Contents
天氣小觀:太平洋副高太強,阻高崩潰後寒潮只侵襲到北東亞(長江流域以北),
後續是否能侵襲到南東亞(長江流域以南),仍待觀察
因跨年關係,快速說明,過兩天再補充:
聖嬰現象看起來影響非常明顯
歐亞大陸的阻塞高壓將冷氣團大量堆到西伯利亞,
形成入冬以來最強的西伯利亞冷高壓
隨著模式預報阻塞高壓一周後漸漸崩潰,寒潮開始往東亞侵襲,
但是西風槽轉直過程,受到強大的阻力
這阻力來自於聖嬰現象下--太平洋副高強勢。
當歐亞阻塞高壓開始崩潰後,會轉成西風脊,伴隨東亞西風槽轉直,
寒潮南下往往伴隨溫帶氣旋產生,使太平洋上的副高對應往北突出西風脊
歐亞大陸阻高崩潰後,往往形成:脊(/\)-槽(\/)-脊(/\)形勢,而東亞落在槽區。
但今年由於聖嬰現象的關係,太平洋上的的副熱帶高壓偏強,
原先在東亞的西風槽轉直後,太平洋副高上會出現脊的形勢,今年不會出現
因為,預報看來未來一周,在阻塞高壓崩潰後,太平洋上的脊型態不明顯。
這表示,太平洋副高牆阻擋勢力很強,
連帶影響西風槽的延伸形勢。
因此,一周後期,阻塞高壓崩潰後,寒潮只影響到北東亞,對台灣較無影響。
看來,這波聖嬰現象不只是強,而且影響非常大。
持續下去可能這次冬季台灣沒有寒潮出現。
--
後續是否能侵襲到南東亞(長江流域以南),仍待觀察
因跨年關係,快速說明,過兩天再補充:
聖嬰現象看起來影響非常明顯
歐亞大陸的阻塞高壓將冷氣團大量堆到西伯利亞,
形成入冬以來最強的西伯利亞冷高壓
隨著模式預報阻塞高壓一周後漸漸崩潰,寒潮開始往東亞侵襲,
但是西風槽轉直過程,受到強大的阻力
這阻力來自於聖嬰現象下--太平洋副高強勢。
當歐亞阻塞高壓開始崩潰後,會轉成西風脊,伴隨東亞西風槽轉直,
寒潮南下往往伴隨溫帶氣旋產生,使太平洋上的副高對應往北突出西風脊
歐亞大陸阻高崩潰後,往往形成:脊(/\)-槽(\/)-脊(/\)形勢,而東亞落在槽區。
但今年由於聖嬰現象的關係,太平洋上的的副熱帶高壓偏強,
原先在東亞的西風槽轉直後,太平洋副高上會出現脊的形勢,今年不會出現
因為,預報看來未來一周,在阻塞高壓崩潰後,太平洋上的脊型態不明顯。
這表示,太平洋副高牆阻擋勢力很強,
連帶影響西風槽的延伸形勢。
因此,一周後期,阻塞高壓崩潰後,寒潮只影響到北東亞,對台灣較無影響。
看來,這波聖嬰現象不只是強,而且影響非常大。
持續下去可能這次冬季台灣沒有寒潮出現。
--
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