天氣小觀:冬季系統連續放大絕,冷高壓南方建立 - 颱風討論
By Gilbert
at 2021-01-06T13:02
at 2021-01-06T13:02
Table of Contents
天氣小觀:冬季系統連續放大絕,冷高壓不斷嘗試在嶺南建立
冬季大體來說,台灣主要受到冬季大氣系統掌控,
如果說,
冬季系統連放必殺技,或來個超必殺技,都是一般模式下的冬季系統;
但,
今年一開始,冬季系統就爆氣模式,打算要"連放超必殺技"!
(一直放元氣彈不累喔,夏季迷QQ)
模式預報,
未來一週強冷高壓,不斷、不斷、不斷南下,
試圖在嶺南丘陵建立冷高壓中心,還以為是蒙古高原喔,真是夭壽!
大氣中層500帕,
未來一週副高龜縮到遠洋,5760線正式壓到台灣上空,
台灣完全落在西風系統中,後頭的西風帶西北氣流不斷將冷空氣輸送到華南地區,
由於北極渦旋偏移至鄂霍次克海以西,
冷凍氣團已從西伯利亞、蒙古、東北地區向南擴展,開始盤踞在華北到華中地區,
同時,
大氣地面層,
在西風帶西北氣流的導引下,冷凍氣團開始進入華南地區,
在武夷山以東、南嶺以北的地區(嶺南),試圖建立冷高壓中心。
昨晚深夜以後起,
冷高壓1072百帕在貝加爾湖,開始逐漸向南分配冷高壓勢力,
今起,
西伯利亞冷高壓第一勢力,
蒙古冷高壓第二勢力建立;
明起,
華北到內蒙古冷高壓第三勢力,這就是東亞寒潮爆發,但冬季系統不滿足於此,
到了周五,
冬季系統開始在嶺南建立冷高壓第三勢力,
由於華南地區的環境不比北方,因此週日華南冷高壓會減弱出海;
但隨即!
華南冷高壓第三勢力又重新建立,於是又是強冷~寒流等級的乾冷氣團向台灣襲來。
這種冬季系統狂放大絕,冷高壓中心不斷在嶺南建立起來,
可以從百帕高度場平流層來看,
未來一週北極渦旋最外圍的的勢力圈16400米不斷壓到東亞嶺南,
這表示高位渦的北極氣團會沿著傾斜的等位溫面向下運動,
從而將冷凍氣團從北方高空帶到南方地面。
因此長期預報看來,
華南冷高壓一波接一波的建立,寒潮一波接一波的向台灣侵襲,也就不意外了。
至於北極渦旋偏移北極的原因,就是副極地異常增溫往北極發展,
導致北極渦旋一直回不去北極中心,不過這次的增溫不是很強烈,
展望更長期1月下旬,北極渦旋有機會回歸北極,再觀察了。
(快速說說,以上供參囉)
--
冬季大體來說,台灣主要受到冬季大氣系統掌控,
如果說,
冬季系統連放必殺技,或來個超必殺技,都是一般模式下的冬季系統;
但,
今年一開始,冬季系統就爆氣模式,打算要"連放超必殺技"!
(一直放元氣彈不累喔,夏季迷QQ)
模式預報,
未來一週強冷高壓,不斷、不斷、不斷南下,
試圖在嶺南丘陵建立冷高壓中心,還以為是蒙古高原喔,真是夭壽!
大氣中層500帕,
未來一週副高龜縮到遠洋,5760線正式壓到台灣上空,
台灣完全落在西風系統中,後頭的西風帶西北氣流不斷將冷空氣輸送到華南地區,
由於北極渦旋偏移至鄂霍次克海以西,
冷凍氣團已從西伯利亞、蒙古、東北地區向南擴展,開始盤踞在華北到華中地區,
同時,
大氣地面層,
在西風帶西北氣流的導引下,冷凍氣團開始進入華南地區,
在武夷山以東、南嶺以北的地區(嶺南),試圖建立冷高壓中心。
昨晚深夜以後起,
冷高壓1072百帕在貝加爾湖,開始逐漸向南分配冷高壓勢力,
今起,
西伯利亞冷高壓第一勢力,
蒙古冷高壓第二勢力建立;
明起,
華北到內蒙古冷高壓第三勢力,這就是東亞寒潮爆發,但冬季系統不滿足於此,
到了周五,
冬季系統開始在嶺南建立冷高壓第三勢力,
由於華南地區的環境不比北方,因此週日華南冷高壓會減弱出海;
但隨即!
華南冷高壓第三勢力又重新建立,於是又是強冷~寒流等級的乾冷氣團向台灣襲來。
這種冬季系統狂放大絕,冷高壓中心不斷在嶺南建立起來,
可以從百帕高度場平流層來看,
未來一週北極渦旋最外圍的的勢力圈16400米不斷壓到東亞嶺南,
這表示高位渦的北極氣團會沿著傾斜的等位溫面向下運動,
從而將冷凍氣團從北方高空帶到南方地面。
因此長期預報看來,
華南冷高壓一波接一波的建立,寒潮一波接一波的向台灣侵襲,也就不意外了。
至於北極渦旋偏移北極的原因,就是副極地異常增溫往北極發展,
導致北極渦旋一直回不去北極中心,不過這次的增溫不是很強烈,
展望更長期1月下旬,北極渦旋有機會回歸北極,再觀察了。
(快速說說,以上供參囉)
--
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