天氣小觀:模式未來一週冬颱形成 - 颱風討論

By Dorothy
at 2017-12-11T20:53
at 2017-12-11T20:53
Table of Contents
天氣小觀:模式未來一週冬颱形成
連續數週的狂東北季風不斷吹向西太平洋,將高海溫的洋面推向低緯度,
使菲律賓東南方海水溫度非常高,再加上東亞大槽逼退副高,
讓菲律賓東南方海面成為熱帶擾動的溫床,
模式看好在菲律賓東南方近海的96W將逐漸發展,加上本週3道強勁東北季風南下,
預報將發展為冬颱。
尤其接近呂宋島東方海面後,與第三波強烈東北季風接上,加強渦度旋轉讓強度增強,
但是季節不對了,強烈東北季風後頭的強大地面冷高壓是寒冷氣團,
冷高壓抑制下96W/颱風的共伴雲雨帶,降雨到不了台灣,
同時寒冷空氣南下也將逐漸撕裂96W/颱風,
對台灣來說,要注意的是冷高壓與熱低壓兩者梯度差異,讓台灣附近的東北季風暴走,
西半部沿海、恆春半島都要當心非常強大的暴走東北季風。
今起冷空氣再度南下,雖然未達冷氣團,但前兩天的冷氣團已經讓人感到冷了,
而南方逐漸發展的96W到底還是夏季系統,
發展的同時也讓南海微弱副高勢力的振作了一下,
往北頂到西風槽,後天起北部外海有低空噴流,配合地面東北季風,北部會有明顯降雨,
不過冬天的副高沒甚麼用,後期新的西風槽很快滅了南海的副高勢力,
尤其模式預報未來一週後期的強烈冷氣團南下,甚至有點機會達到寒流等級,
在地面上,96W/颱風讓暴走的東北季風率冷空氣大幅度南下,
但在高空,96W/颱風不會有利西風帶正北氣流南下,高空仍然是西風帶的西北氣流,
因此,寒流不一定會襲台,模式也預報850帕0度線逼近北台灣,但是沒辦法再往南壓,
畢竟西風帶的西北氣流環境下,強冷空氣不完全南下,加上強風下,輻射冷卻有難度,
因此,目前看來還不用太擔心寒流襲台。
還是留意別感冒要緊...
(咳咳...簡單講,以上供參囉)
--
連續數週的狂東北季風不斷吹向西太平洋,將高海溫的洋面推向低緯度,
使菲律賓東南方海水溫度非常高,再加上東亞大槽逼退副高,
讓菲律賓東南方海面成為熱帶擾動的溫床,
模式看好在菲律賓東南方近海的96W將逐漸發展,加上本週3道強勁東北季風南下,
預報將發展為冬颱。
尤其接近呂宋島東方海面後,與第三波強烈東北季風接上,加強渦度旋轉讓強度增強,
但是季節不對了,強烈東北季風後頭的強大地面冷高壓是寒冷氣團,
冷高壓抑制下96W/颱風的共伴雲雨帶,降雨到不了台灣,
同時寒冷空氣南下也將逐漸撕裂96W/颱風,
對台灣來說,要注意的是冷高壓與熱低壓兩者梯度差異,讓台灣附近的東北季風暴走,
西半部沿海、恆春半島都要當心非常強大的暴走東北季風。
今起冷空氣再度南下,雖然未達冷氣團,但前兩天的冷氣團已經讓人感到冷了,
而南方逐漸發展的96W到底還是夏季系統,
發展的同時也讓南海微弱副高勢力的振作了一下,
往北頂到西風槽,後天起北部外海有低空噴流,配合地面東北季風,北部會有明顯降雨,
不過冬天的副高沒甚麼用,後期新的西風槽很快滅了南海的副高勢力,
尤其模式預報未來一週後期的強烈冷氣團南下,甚至有點機會達到寒流等級,
在地面上,96W/颱風讓暴走的東北季風率冷空氣大幅度南下,
但在高空,96W/颱風不會有利西風帶正北氣流南下,高空仍然是西風帶的西北氣流,
因此,寒流不一定會襲台,模式也預報850帕0度線逼近北台灣,但是沒辦法再往南壓,
畢竟西風帶的西北氣流環境下,強冷空氣不完全南下,加上強風下,輻射冷卻有難度,
因此,目前看來還不用太擔心寒流襲台。
還是留意別感冒要緊...
(咳咳...簡單講,以上供參囉)
--
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颱風
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