University of Taipei:Item 987654321/11127
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    Please use this identifier to cite or link to this item: http://utaipeir.lib.utaipei.edu.tw/dspace/handle/987654321/11127


    Title: 2004/05冬季臺灣寒潮之探討:阻塞高壓的影響
    Authors: 洪志誠;賈新興
    Contributors: 地球環境暨生物資源學系(含環境教育與資源碩士班)
    Keywords: 阻塞高壓;寒潮;東亞噴流;波列;Cold surge;Blocking;East Asia jet;Wave trains
    Date: 2007-06
    Issue Date: 2014-01-17 19:30:53 (UTC+8)
    Abstract:   2004/05 年冬季,北半球阻塞高壓出現頻繁,期間台灣共發生四次寒潮(氣候平均 1~2 次)。本文以NCEP重分析日平均資料探討2004/05年冬季台灣四次寒潮與北半球阻塞高壓的關係。
      研究發現,四次寒潮皆發生在阻塞持續或消散期間,寒潮爆發時東亞噴流增強,且沿著副熱帶噴流出現正壓波列。此波列在穿越東亞時振幅出現局部放大,伴隨之低層北風分量可以加速寒潮南移。阻塞高壓則透過以下過程影響寒潮:(1)加強西伯利亞冷高壓,(2)加強東亞噴流,透過正壓不穩定機制增加華南一帶的低層北風分量。
    Relation: 大氣科學,35卷2期,頁151-165
    Appears in Collections:[Department of Earth and Life Science] Periodical Articles

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