天氣小觀:未來一週,東亞溫帶氣旋,西太蒲公英 - 颱風討論
By Tristan Cohan
at 2021-09-25T08:58
at 2021-09-25T08:58
Table of Contents
天氣小觀:未來一週,東亞溫帶氣旋北上,西太平洋熱帶氣旋蒲公英北上
思佳客。蒲公英
棄落荒坡依舊發,無緣名分勝名花。
休言無用低俗賤,宴款高朋色味佳。
飄似羽,逸如紗,秋來飛絮赴天涯。
獻身喜作醫人藥,無意芳名遍萬家。
蒲公英是一種不是很起眼的野草,但卻是很有價值藥草,
結果期在五月,另外就是秋季9~10月;
然而,西太平洋上的蒲公英將很亮眼:
輕度颱風蒲公英
編號第 16 號
國際命名 MINDULLE
25日2時的中心位置在北緯 16.7 度,東經 138.7 度,
以每小時13公里速度,向北北西進行。中心氣壓978百帕,
近中心最大風速每秒30公尺,瞬間最大陣風每秒 38 公尺,
七級風暴風半徑 180 公里,十級風暴風半徑 60 公里。
JTWC看好成為(每分鐘中心最大風速)130KTS Super Typhoon
也就是強烈颱風等級。
路徑上目前通過日本的西風槽正在打擊太平洋高壓,
因此,預期太平洋高壓會在蒲公英北方漸漸變薄最終斷裂,
促使蒲公英偏西轉西北右轉北,最終轉東北併入西風槽。
如無意外,應該是從日本東南外海北上,最終隨槽而去。
以此路徑來看,當然是對台灣就沒甚麼影響了。
模式顯示,未來一週由於青藏高原冷空氣的推動,
東亞有低壓往東北移動發展為溫帶氣旋,
因此,
未來一週台灣的大環境變成:
一邊是蒲公英颱風北上,另一邊是溫帶氣旋北上,
台灣夾在兩氣旋中間,天氣反而較穩定;
(夾在兩高壓之間,相對為低壓,天氣不穩定
夾在兩低壓之間,相對為高壓,天氣穩定)
真正要變化可能要到一週過後再觀察囉。
昨天的類東北季風南下,
全台只有北宜東邊有感而以,當然就是嘩啦嘩啦的地形雨。
而中南部山區(以南部山區為主)為背風低壓的午後對流雨。
在秋季初期,對流雨還較明顯,但秋季中後期10月以後,
對流雨減少,地形雨增多代表冬季系統的崛起;
當然了,
秋季南方海溫高,容易生氣旋,旋生後的降雨才是最主要。
至於鋒面雨,基本上秋季是最少的。
秋季是以冷空氣發展為主,高空大氣系統最穩定也最單調的季節。
不管是北極渦旋還是東亞大槽,都還需要黑夜的營養。
秋分過後,北極永夜開始,北極渦旋進入增強期,
當平流層的北極渦旋增強時,北極的高等位溫面往中緯度向下傾斜,
高位渦冷空氣就會沿著傾斜的等位溫面向下運動,
將冷空氣從"高空層的極地"帶到"較低層的中緯度地區"。
因此,
北極渦旋增強投射的冷空氣到鄂霍次克海,
無怪乎何太平洋高壓肯定撐不住了。
蒲公英颱風遠遠北上囉。
以古觀之氣象,
北極渦旋的五行帶有陰冷的土氣,土生西風槽庚金,
庚金砍木-西風噴流轉為彎曲,少了木,太平洋高壓丙火減弱,
於是,天氣轉冷。
但對台灣來說,太平洋高壓還穩穩地,丙火還是強大。
(以上供參囉)
--
思佳客。蒲公英
棄落荒坡依舊發,無緣名分勝名花。
休言無用低俗賤,宴款高朋色味佳。
飄似羽,逸如紗,秋來飛絮赴天涯。
獻身喜作醫人藥,無意芳名遍萬家。
蒲公英是一種不是很起眼的野草,但卻是很有價值藥草,
結果期在五月,另外就是秋季9~10月;
然而,西太平洋上的蒲公英將很亮眼:
輕度颱風蒲公英
編號第 16 號
國際命名 MINDULLE
25日2時的中心位置在北緯 16.7 度,東經 138.7 度,
以每小時13公里速度,向北北西進行。中心氣壓978百帕,
近中心最大風速每秒30公尺,瞬間最大陣風每秒 38 公尺,
七級風暴風半徑 180 公里,十級風暴風半徑 60 公里。
JTWC看好成為(每分鐘中心最大風速)130KTS Super Typhoon
也就是強烈颱風等級。
路徑上目前通過日本的西風槽正在打擊太平洋高壓,
因此,預期太平洋高壓會在蒲公英北方漸漸變薄最終斷裂,
促使蒲公英偏西轉西北右轉北,最終轉東北併入西風槽。
如無意外,應該是從日本東南外海北上,最終隨槽而去。
以此路徑來看,當然是對台灣就沒甚麼影響了。
模式顯示,未來一週由於青藏高原冷空氣的推動,
東亞有低壓往東北移動發展為溫帶氣旋,
因此,
未來一週台灣的大環境變成:
一邊是蒲公英颱風北上,另一邊是溫帶氣旋北上,
台灣夾在兩氣旋中間,天氣反而較穩定;
(夾在兩高壓之間,相對為低壓,天氣不穩定
夾在兩低壓之間,相對為高壓,天氣穩定)
真正要變化可能要到一週過後再觀察囉。
昨天的類東北季風南下,
全台只有北宜東邊有感而以,當然就是嘩啦嘩啦的地形雨。
而中南部山區(以南部山區為主)為背風低壓的午後對流雨。
在秋季初期,對流雨還較明顯,但秋季中後期10月以後,
對流雨減少,地形雨增多代表冬季系統的崛起;
當然了,
秋季南方海溫高,容易生氣旋,旋生後的降雨才是最主要。
至於鋒面雨,基本上秋季是最少的。
秋季是以冷空氣發展為主,高空大氣系統最穩定也最單調的季節。
不管是北極渦旋還是東亞大槽,都還需要黑夜的營養。
秋分過後,北極永夜開始,北極渦旋進入增強期,
當平流層的北極渦旋增強時,北極的高等位溫面往中緯度向下傾斜,
高位渦冷空氣就會沿著傾斜的等位溫面向下運動,
將冷空氣從"高空層的極地"帶到"較低層的中緯度地區"。
因此,
北極渦旋增強投射的冷空氣到鄂霍次克海,
無怪乎何太平洋高壓肯定撐不住了。
蒲公英颱風遠遠北上囉。
以古觀之氣象,
北極渦旋的五行帶有陰冷的土氣,土生西風槽庚金,
庚金砍木-西風噴流轉為彎曲,少了木,太平洋高壓丙火減弱,
於是,天氣轉冷。
但對台灣來說,太平洋高壓還穩穩地,丙火還是強大。
(以上供參囉)
--
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