天氣小觀:未來一週,鄂霍次克海強烈冰風暴 - 颱風討論
By Bennie
at 2019-02-04T10:19
at 2019-02-04T10:19
Table of Contents
天氣小觀:未來一週,鄂霍次克海強烈冰風暴,可以拉板凳看北極海冰的壓軸高潮了
今冬的西伯利亞冷高壓真是弱的可以,
但北極海冰情況卻無極限的又一波高潮,
自去年九月永夜環境開始後,
首先是10月北亞海域北地群島驚人速度的彌補正常夏季短少的海冰,
接著是11月加拿大冰風暴讓哈德遜灣提早結冰的高潮
再來是12月亞洲遠東楚科奇海往白令海結冰洗刷先前冬季的恥辱。
然後是今年1月北極風暴轉往巴倫支海對抗北大西洋暖流奏捷。
來到現在的2月,
模式預報,未來一周,
北極渦旋準備匯集北極中心與西伯利亞超級冷渦旋,
全力冰封鄂霍次克海。
從100百怕高度場來看
北極渦旋中心從西伯利亞往東移往庫頁島西北方。
從120小時以後的100百帕高度場來看
北極渦旋中心已在鄂霍次可海近海,
https://tinyurl.com/yahf6qg7
冬季系統大魔王的大掌從高空往下壓,
100百帕高度場已開始出現暖中心且持續到120小時依舊很明顯
https://tinyurl.com/y8q8fdah
這下可不得了,
因為100百帕高度場出現暖中心的情況有兩種,
1. 對流層阻塞高壓向上發展
2. 高空冷渦旋發展 或 北極渦旋中心
平流層的暖中心,不代表暖氣團,
而是因為平流層下壓,強大的冷凍氣團往下壓扁"對流層"
導致平流層下移後,平流層隨高度升溫,
原本的100百帕高度場對應出暖中心。
原本 現在起
100百帕高度場:-53度 => -48度 (暖中心)
200百帕高度場:-48度 => -50度
平流層 冬季大魔王魔掌
============================== !
對流層 !
300百帕高度場:-55度 => -52度 !
平流層 V
=======================
對流層
500百帕高度場:-41度 => -48度
鄂霍次克海面: -2度 => -22度 (強烈冰風暴)
不用多說,
這次的100百帕高度場出現暖中心的情況是第二種:北極渦旋中心親臨
且結合西伯利亞極地超級冷凍氣團和北極冷凍氣團,
因此,鄂霍次克海冰面臨強烈冰風暴,。
由於鄂霍次克海面積很大,這次挑戰全海域出現海冰,
從堪察加半島、千島群島和庫頁島圍起來的鄂霍次克海如果都出現海冰,
那真的就有小冰期的感覺了,20世紀末的全球暖化加劇以來可不曾如此過。
但對台灣來說,則完全沒有小冰期,
模式預報看來,未來一周副高勢力依舊偏強,
北方冷氣團再次東偏,對南方的台灣來說,
高空槽受制於副高勢力難以伸展。
主要就是地面東北季風的冷空氣,降溫主要以北部較明顯稍冷,尤其夜晚有冷,
且副高勢力的偏南風力道越來越強,
中南部有些地區已經出現降雨,
這與秋季降雨集中在東部和北部有不同了。
模式顯示後期南亞增溫,大氣中低層700百帕的反氣旋出現,
可說是叫醒夏季系統的鬧鐘響了,
看來夏季系統確實要甦醒了。
接下來冷暖大戰就要開始留意降雨了,
(以上供參囉)
--
今冬的西伯利亞冷高壓真是弱的可以,
但北極海冰情況卻無極限的又一波高潮,
自去年九月永夜環境開始後,
首先是10月北亞海域北地群島驚人速度的彌補正常夏季短少的海冰,
接著是11月加拿大冰風暴讓哈德遜灣提早結冰的高潮
再來是12月亞洲遠東楚科奇海往白令海結冰洗刷先前冬季的恥辱。
然後是今年1月北極風暴轉往巴倫支海對抗北大西洋暖流奏捷。
來到現在的2月,
模式預報,未來一周,
北極渦旋準備匯集北極中心與西伯利亞超級冷渦旋,
全力冰封鄂霍次克海。
從100百怕高度場來看
北極渦旋中心從西伯利亞往東移往庫頁島西北方。
從120小時以後的100百帕高度場來看
北極渦旋中心已在鄂霍次可海近海,
https://tinyurl.com/yahf6qg7
冬季系統大魔王的大掌從高空往下壓,
100百帕高度場已開始出現暖中心且持續到120小時依舊很明顯
https://tinyurl.com/y8q8fdah
這下可不得了,
因為100百帕高度場出現暖中心的情況有兩種,
1. 對流層阻塞高壓向上發展
2. 高空冷渦旋發展 或 北極渦旋中心
平流層的暖中心,不代表暖氣團,
而是因為平流層下壓,強大的冷凍氣團往下壓扁"對流層"
導致平流層下移後,平流層隨高度升溫,
原本的100百帕高度場對應出暖中心。
原本 現在起
100百帕高度場:-53度 => -48度 (暖中心)
200百帕高度場:-48度 => -50度
平流層 冬季大魔王魔掌
============================== !
對流層 !
300百帕高度場:-55度 => -52度 !
平流層 V
=======================
對流層
500百帕高度場:-41度 => -48度
鄂霍次克海面: -2度 => -22度 (強烈冰風暴)
不用多說,
這次的100百帕高度場出現暖中心的情況是第二種:北極渦旋中心親臨
且結合西伯利亞極地超級冷凍氣團和北極冷凍氣團,
因此,鄂霍次克海冰面臨強烈冰風暴,。
由於鄂霍次克海面積很大,這次挑戰全海域出現海冰,
從堪察加半島、千島群島和庫頁島圍起來的鄂霍次克海如果都出現海冰,
那真的就有小冰期的感覺了,20世紀末的全球暖化加劇以來可不曾如此過。
但對台灣來說,則完全沒有小冰期,
模式預報看來,未來一周副高勢力依舊偏強,
北方冷氣團再次東偏,對南方的台灣來說,
高空槽受制於副高勢力難以伸展。
主要就是地面東北季風的冷空氣,降溫主要以北部較明顯稍冷,尤其夜晚有冷,
且副高勢力的偏南風力道越來越強,
中南部有些地區已經出現降雨,
這與秋季降雨集中在東部和北部有不同了。
模式顯示後期南亞增溫,大氣中低層700百帕的反氣旋出現,
可說是叫醒夏季系統的鬧鐘響了,
看來夏季系統確實要甦醒了。
接下來冷暖大戰就要開始留意降雨了,
(以上供參囉)
--
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