天氣小觀:模式後期 西風震盪+超級西伯利亞冷高 - 颱風討論

By Ingrid
at 2016-01-13T20:40
at 2016-01-13T20:40
Table of Contents
天氣小觀:模式後期:西風噴流震盪+超級西伯利亞高壓
這一波冷氣團往南侵襲,在副高牆的阻擋下,
差不多已經是南侵的極限了。
副熱帶西風噴流軸線壓到東海到台灣北部。
目前也趨於平坦了,看起來不太會再往南了。
也由於副高牆這一波的阻擋,使高空冷渦旋延伸西風槽受阻,
冷渦旋也只能勉強將副熱帶西風噴流壓到這裡。
換句話,冷氣團再南壓有限了。最冷溫度差不多到了。
對台灣北部來說,倒是有碰到冷氣團標準。
後續要觀察的,還是北極新地島以東的阻塞高壓,正往西伯利亞中部移動,
由於這個阻塞高壓的關係,將北極的冷氣團不斷帶往西伯利亞東部
使西伯利亞東部陷入超級寒凍。
有趣的還是一周後期的模式預報,
這個阻塞高壓有往中亞崩潰的趨勢,這中間包含與中亞暖脊結合的過程,
一周後期,副熱帶西風噴流出現明顯震盪,西風波動加大。
中亞有暖脊北上,南亞有冷槽南下,
也就是,
對台灣和東南亞來說,一波明顯的西風南支槽從南亞往東移過來。
槽前有很明顯的偏南風,從印度半島往西藏再向東到華南地區,
都造成明顯降雨。
對北方天氣形勢來說,
由於阻塞高壓往中亞的關係,使西伯利亞地面冷高壓迅速增強,
模式預報,輕鬆再突破1060百帕,變身為超級冷高壓,
甚至不排除打破前週西伯利亞自身的紀錄,
再度成為入冬以來北半球最強的地面冷高壓。
北方形勢有強大的高空冷渦旋對應如此強大的西伯利亞冷高壓,
南方形勢又有明顯的南支槽東移,
如果西風南北支槽接的好,疊加成西風大"直"槽後,
冷氣團對台灣的影響力就很可觀了。
不過這同時再度考驗副高牆的能耐,是否再守一局...
今年副高這麼強守,喜歡夏天的話,
只要副高守到三月過後,四月起就是副高的時來運轉之季開始降臨了。
有賴繼續觀察下去了。
(以上供參囉)
--
這一波冷氣團往南侵襲,在副高牆的阻擋下,
差不多已經是南侵的極限了。
副熱帶西風噴流軸線壓到東海到台灣北部。
目前也趨於平坦了,看起來不太會再往南了。
也由於副高牆這一波的阻擋,使高空冷渦旋延伸西風槽受阻,
冷渦旋也只能勉強將副熱帶西風噴流壓到這裡。
換句話,冷氣團再南壓有限了。最冷溫度差不多到了。
對台灣北部來說,倒是有碰到冷氣團標準。
後續要觀察的,還是北極新地島以東的阻塞高壓,正往西伯利亞中部移動,
由於這個阻塞高壓的關係,將北極的冷氣團不斷帶往西伯利亞東部
使西伯利亞東部陷入超級寒凍。
有趣的還是一周後期的模式預報,
這個阻塞高壓有往中亞崩潰的趨勢,這中間包含與中亞暖脊結合的過程,
一周後期,副熱帶西風噴流出現明顯震盪,西風波動加大。
中亞有暖脊北上,南亞有冷槽南下,
也就是,
對台灣和東南亞來說,一波明顯的西風南支槽從南亞往東移過來。
槽前有很明顯的偏南風,從印度半島往西藏再向東到華南地區,
都造成明顯降雨。
對北方天氣形勢來說,
由於阻塞高壓往中亞的關係,使西伯利亞地面冷高壓迅速增強,
模式預報,輕鬆再突破1060百帕,變身為超級冷高壓,
甚至不排除打破前週西伯利亞自身的紀錄,
再度成為入冬以來北半球最強的地面冷高壓。
北方形勢有強大的高空冷渦旋對應如此強大的西伯利亞冷高壓,
南方形勢又有明顯的南支槽東移,
如果西風南北支槽接的好,疊加成西風大"直"槽後,
冷氣團對台灣的影響力就很可觀了。
不過這同時再度考驗副高牆的能耐,是否再守一局...
今年副高這麼強守,喜歡夏天的話,
只要副高守到三月過後,四月起就是副高的時來運轉之季開始降臨了。
有賴繼續觀察下去了。
(以上供參囉)
--
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