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Back東北季風增強影響台灣 氣象專家預測10日至11日最明顯
東北季風增強影響台灣 氣象專家預測10日至11日最明顯
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自由时报1 hour agoEnvironment2 min readChinaView translation

東北季風增強影響台灣 氣象專家預測10日至11日最明顯

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國立台灣大學大氣科學博士林得恩指出,本月9日起東北季風增強,預計10日至11日對台灣影響最明顯,12日逐漸減弱,影響時長約3至4天。北部及東北部迎風面將有局部短暫雨,早晚低溫預估22至24度,陰雨時體感明顯轉涼;中南部則維持多雲到晴,影響不顯著。

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Why It Matters

東北季風是影響台灣冬季氣候的重要氣象系統,通常帶來東北風、降雨和氣溫下降,尤其在北部和東北部迎風山坡地區較為顯著。

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林得恩指出,本月9日起東北季風增強,預計10日至11日影響台灣。(資料照)

國立台灣大學大氣科學博士林得恩表示,本月9日起東北季風增強,預計10日至11日影響台灣,12日逐漸減弱,影響時長約3至4天;迎風面有局部短暫雨,早晚低溫預估約22至24度,碰上陰雨時,體感將明顯轉涼。

林得恩7日在臉書發布貼文稱,根據中央氣象署今晨最新氣象情資,從氣象學角度來看,9日這波東北季風南下,反應最顯著的並非溫度場,而是850百帕(hPa)附近的低層風場開始轉為範圍較大且穩定的東北風環境。林得恩並說明4點主要特徵。

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林得恩指出,首先,東北季風將從9日起增強,10日至11日影響台灣,12日逐漸減弱,整體影響時間約3至4天,其中氣溫降幅最大將落在10日早晚時段。

其二是降雨方面,受到東北季風影響,迎風面的北部、東北部及東部將轉為濕潤,雲量增加並有局部短暫雨;中南部位於東北季風背風側,天氣則維持多雲到晴,相對穩定,影響並不顯著,但午後仍有局部短暫陣雨。

其三是溫度方面,林得恩指出,由於這波冷空氣強度不算強,北部及東北部早晚低溫預估約22至24度,較前期微降約1至2度,尤其遇到陰雨時,體感將明顯轉涼。

其四,東北季風南下遇上雪山山脈及中央山脈迎風坡後,將產生地形抬升作用。因此,基隆、宜蘭及北海岸等地特別容易形成低雲及水氣堆積,造成局部短暫雨,降雨時間也可能拉長,通常會是體感濕涼最為明顯的區域。

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Open Questions

  • 此次東北季風的具體降雨量是多少?
  • 是否會對農業或交通造成明顯影響?

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