天氣小觀:黃花獨帶露,紅葉已隨風。(立冬) - 颱風討論
By Eden
at 2020-11-07T20:31
at 2020-11-07T20:31
Table of Contents
天氣小觀:黃花獨帶露,紅葉已隨風。(立冬)
2020年11月7日上午7點14分進入立冬,
古諺說:立冬晴,一冬凌(寒冷);立冬陰(陰雨),一冬溫(暖冬)
今年台灣立冬天氣,因為閃電颱風的關係,
中南部靠近沿海有些陰雨,北部一早晴,晚起轉陰,基隆北海岸轉雨。
從今天大氣環境來看,閃電颱風減弱為熱帶低壓逐漸消散,
晚起東北季風抵台基隆北海岸,到台北還要再晚一點,
原因當然是後頭的蒙古冷高壓強度不算強,1032百帕而已,
因此南下的冷空氣需要花點時間。
模式預報,這波東北季風降溫持續時間還蠻長的,可達4~5天,
主要是南方還有熱帶擾動,尤其預報看好菲律賓東方的熱帶擾動發展起來。
不過與先前不同的是,這是預報菲東的擾動發展後偏西移動,
主要原因是模式認為擾動成颱的緯度偏低約北緯15~16度,
西風槽底緯度也偏高約北緯30度,因此中間巴士海峽由副高插入導引偏西移動。
如此的話,
下一個菲東成颱就對台灣影響不大,
除了地面秀颱風帶上暖濕氣團由東北季風抬升影響東北部苦主外(北部、東部偶而陪伴)。
此外目前模式顯示,
菲東成颱過後,西太平洋可能要恢復平靜了,西風帶南移,北台灣高空出現西風噴流,
看起來是準備步入冬季大環境了。
只是,
未來一週這波冷空氣過後,11月中似乎北方沒有明顯冷空氣下來,
因此,反而還算溫和,短時間內也沒有東亞寒潮爆發的跡象。
結論:少了氣旋,"神鬼奇航"的秋季大氣環境也要走向"泰山壓頂"的冬季大環境了。
從對流層大氣要看向平流層大氣了。
(簡單說說囉)
--
2020年11月7日上午7點14分進入立冬,
古諺說:立冬晴,一冬凌(寒冷);立冬陰(陰雨),一冬溫(暖冬)
今年台灣立冬天氣,因為閃電颱風的關係,
中南部靠近沿海有些陰雨,北部一早晴,晚起轉陰,基隆北海岸轉雨。
從今天大氣環境來看,閃電颱風減弱為熱帶低壓逐漸消散,
晚起東北季風抵台基隆北海岸,到台北還要再晚一點,
原因當然是後頭的蒙古冷高壓強度不算強,1032百帕而已,
因此南下的冷空氣需要花點時間。
模式預報,這波東北季風降溫持續時間還蠻長的,可達4~5天,
主要是南方還有熱帶擾動,尤其預報看好菲律賓東方的熱帶擾動發展起來。
不過與先前不同的是,這是預報菲東的擾動發展後偏西移動,
主要原因是模式認為擾動成颱的緯度偏低約北緯15~16度,
西風槽底緯度也偏高約北緯30度,因此中間巴士海峽由副高插入導引偏西移動。
如此的話,
下一個菲東成颱就對台灣影響不大,
除了地面秀颱風帶上暖濕氣團由東北季風抬升影響東北部苦主外(北部、東部偶而陪伴)。
此外目前模式顯示,
菲東成颱過後,西太平洋可能要恢復平靜了,西風帶南移,北台灣高空出現西風噴流,
看起來是準備步入冬季大環境了。
只是,
未來一週這波冷空氣過後,11月中似乎北方沒有明顯冷空氣下來,
因此,反而還算溫和,短時間內也沒有東亞寒潮爆發的跡象。
結論:少了氣旋,"神鬼奇航"的秋季大氣環境也要走向"泰山壓頂"的冬季大環境了。
從對流層大氣要看向平流層大氣了。
(簡單說說囉)
--
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