天氣小觀:本週又是兩波冷空氣,看北大西洋阻高 - 颱風討論
By Daniel
at 2018-11-19T19:53
at 2018-11-19T19:53
Table of Contents
由於目前北大西洋正有著強烈的阻塞高壓,
這個阻塞高壓的過去來自先前北美寒潮爆發後,槽前的暖流大舉北上,
這個阻塞高壓的未來將對之後北亞大冷凍氣團,崩潰的北極氣團匯入。
首先看到阻塞高壓的割離低壓,竟然讓超級冷凍氣團進入加拿大哈德遜灣,
加拿大哈德遜灣正在急速結凍,
http://nsidc.org/arcticseaicenews/
一顆大冰塊在哈德遜灣北部冒出。
每年的10~11月,北極熊會聚集在沿岸,等待哈德遜灣結凍後,
北極熊才能夠進入結冰的海域進行冬季狩獵。
哈德遜灣主要位於北緯55~65度之間,
一般12月中大面積結冰,直到隔年6月中大面積融冰,
而今11月中旬開始大面積結冰的情形,可以樂觀以待。
北大西洋強烈阻塞高壓的能耐當然不止於此,
大量的冷凍氣團不斷往俄羅斯堆積,當地急凍,
後期阻塞高壓崩潰後,一部分冷氣團往中亞流,
不過真正重要的是北極渦旋偏向北亞,
這也是北大西洋阻塞高壓崩潰後的最大影響。
模式預報,北極渦旋分裂的兩中心,
未來一週將由北亞的主中心整合,
北極渦旋將在北亞沿岸的高空增強,
西伯利亞整個大急凍,由於後期北極渦旋不斷增強中,
因此極地冷氣團完全沒有南下東亞的意思,以冷凍北亞為目標。
對東亞來說,目前第一波東北季風增強加強冷空氣,
即便冷凍氣團只在北方活動,但時序深秋已過大半,
模式預報今起的第一波以及星期四的第二波冷空氣,都還蠻有感的,
850帕10度線壓進台灣北部,第二波冷空氣又比第一波強些,
差別在於主要影響還是台灣北部、東北部,而且維持大約2天。
六、日看來又是回暖的天氣了。
(簡單說說,以上供參囉)
--
這個阻塞高壓的過去來自先前北美寒潮爆發後,槽前的暖流大舉北上,
這個阻塞高壓的未來將對之後北亞大冷凍氣團,崩潰的北極氣團匯入。
首先看到阻塞高壓的割離低壓,竟然讓超級冷凍氣團進入加拿大哈德遜灣,
加拿大哈德遜灣正在急速結凍,
http://nsidc.org/arcticseaicenews/
一顆大冰塊在哈德遜灣北部冒出。
每年的10~11月,北極熊會聚集在沿岸,等待哈德遜灣結凍後,
北極熊才能夠進入結冰的海域進行冬季狩獵。
哈德遜灣主要位於北緯55~65度之間,
一般12月中大面積結冰,直到隔年6月中大面積融冰,
而今11月中旬開始大面積結冰的情形,可以樂觀以待。
北大西洋強烈阻塞高壓的能耐當然不止於此,
大量的冷凍氣團不斷往俄羅斯堆積,當地急凍,
後期阻塞高壓崩潰後,一部分冷氣團往中亞流,
不過真正重要的是北極渦旋偏向北亞,
這也是北大西洋阻塞高壓崩潰後的最大影響。
模式預報,北極渦旋分裂的兩中心,
未來一週將由北亞的主中心整合,
北極渦旋將在北亞沿岸的高空增強,
西伯利亞整個大急凍,由於後期北極渦旋不斷增強中,
因此極地冷氣團完全沒有南下東亞的意思,以冷凍北亞為目標。
對東亞來說,目前第一波東北季風增強加強冷空氣,
即便冷凍氣團只在北方活動,但時序深秋已過大半,
模式預報今起的第一波以及星期四的第二波冷空氣,都還蠻有感的,
850帕10度線壓進台灣北部,第二波冷空氣又比第一波強些,
差別在於主要影響還是台灣北部、東北部,而且維持大約2天。
六、日看來又是回暖的天氣了。
(簡單說說,以上供參囉)
--
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