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Back明天立冬東北季風增強!林得恩示警:北台灣濕涼、沿海防強風長浪
明天立冬東北季風增強!林得恩示警:北台灣濕涼、沿海防強風長浪
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自由时报24 minutes agoEnvironment2 min readChinaView translation

明天立冬東北季風增強!林得恩示警:北台灣濕涼、沿海防強風長浪

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受東北季風影響,宜花地區有局部短暫陣雨及局部大雨機率,桃園以北、台東地區及恆春半島有局部短暫雨。國立臺灣大學大氣科學博士林得恩指出,明日立冬,傳統曆法正式進入冬季。北台灣、宜蘭在東北季風增強時易降溫陰雨;中南部白天仍溫暖、日夜溫差較大,西部平原逐漸乾燥;東部及沿海地區需留意降雨、強風與長浪,山區若東北季風與其他水氣系統交互作用仍可能出現局部性較大雨勢。

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Why It Matters

受東北季風影響,宜花地區有局部短暫陣雨,並有局部大雨發生的機率,桃園以北、台東地區及恆春半島有局部短暫雨。立冬是24節氣之一,代表傳統曆法正式進入冬季。

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今天(6日)受東北季風影響,宜花地區有局部短暫陣雨,並有局部大雨發生的機率,桃園以北、台東地區及恆春半島有局部短暫雨,對此,國立臺灣大學大氣科學博士林得恩表示,明天又將來到24節氣中的立冬節氣,代表傳統曆法正式進入冬季,立冬前後建議應注意:北台灣、宜蘭在東北季風增強時,容易降溫、陰雨。中南部的白天可能仍為溫暖、日夜溫差較大,西部平原逐漸進入較乾燥的季節。至於,東部及沿海地區則需留意東北季風帶來的降雨、強風與長浪。另一方面,若東北季風與其它水氣系統交互作用,山區仍可能出現局部性的較大雨勢。

林得恩在臉書PO文表示,秋盡,立冬始!明天,又將來到24節氣中的立冬節氣,代表傳統曆法正式進入冬季。此時,北方朔風漸起,氣溫明顯下降,早晚溫差增大與東北季風增強的特徵會越來越明顯。不過,由於臺灣位於亞熱帶,立冬並不表示全臺會立刻轉冷,而是將逐漸進入東北季風更頻繁、北部與東北部轉趨濕涼,以及中南部相對乾燥的季節。

林得恩指出,依目前季節氣候特徵,立冬前後建議應注意:北台灣、宜蘭在東北季風增強時,容易降溫、陰雨。中南部的白天可能仍為溫暖、日夜溫差較大,西部平原逐漸進入較乾燥的季節。至於,東部及沿海地區則需留意東北季風帶來的降雨、強風與長浪,另一方面,若東北季風與其它水氣系統交互作用,山區仍可能出現局部性的較大雨勢。

林得恩直言,立冬對臺灣最重要的氣候意義,是東北季風逐漸成為影響天氣的主要系統,北部與東北部地區轉為濕涼,中南部地區則逐漸進入相對乾燥的季節。對於古代農業社會而言,立冬代表秋季作物多已收割完畢,農民需將收成入庫收藏;大自然中的動物與昆蟲也開始進入蟄伏或冬眠狀態,養精蓄銳以備開春到來。

Open Questions

  • 立冬後東北季風將持續多久
  • 具體降雨量與降溫幅度預測數值

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