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      氣候變化研究進(jìn)展 ?? 2007, Vol. 03 ?? Issue (06): 345-349.

      ? 研究短論 ? 上一篇    下一篇

      1957-2004年影響我國的強(qiáng)熱帶氣旋頻數(shù)和強(qiáng)度變化

      王小玲 任福民   

      1. 國家氣候中心氣候系統(tǒng)診斷預(yù)測室 國家氣候中心
      • 收稿日期:2007-04-28 修回日期:2007-08-15 出版日期:2007-11-30 發(fā)布日期:2007-11-30
      • 通訊作者: 王小玲

      Variations in Frequency and Intensity of Strong Tropical Cyclones Affecting China During 1957-2004

        

      • Received:2007-04-28 Revised:2007-08-15 Online:2007-11-30 Published:2007-11-30

      摘要: :以中國氣象局西北太平洋熱帶氣旋資料為基礎(chǔ),分析1957-2004年影響我國并達(dá)到臺風(fēng)強(qiáng)度以上的三類熱帶氣旋,即生成熱帶氣旋、影響熱帶氣旋和登陸熱帶氣旋的頻數(shù)和強(qiáng)度的變化。結(jié)果表明:強(qiáng)熱帶氣旋頻數(shù)在1957-2004年間呈顯著減少趨勢,強(qiáng)度越強(qiáng),其減少趨勢越明顯。近50 a臺風(fēng)以上強(qiáng)度的強(qiáng)熱帶氣旋頻次占總頻次的比例沒有明顯的增加或減少趨勢,強(qiáng)臺風(fēng)和超強(qiáng)臺風(fēng)比例呈減少趨勢。1957-2004年熱帶氣旋的最大強(qiáng)度呈線性減弱趨勢,生成熱帶氣旋和影響熱帶氣旋的平均強(qiáng)度亦呈減弱趨勢,登陸臺風(fēng)的平均強(qiáng)度也呈減弱趨勢。

      關(guān)鍵詞: 強(qiáng)熱帶氣旋, 影響熱帶氣旋, 登陸熱帶氣旋, 中國

      Abstract: Based on the tropical cyclone track dataset in the Northwestern Pacific from China Meteorological Administration, variations in frequencies and intensities of tropical cyclones (TCs) in the western North Pacific, affecting-China tropical cyclones (ACTCs) and landfall ones (LTCs) reaching typhoon intensity during 1957-2004 were studied. Frequencies of strong tropical cyclones showed significant decreasing trends from 1957 to 2004 and the linear trend was much larger when the intensity was strong. There were no increasing or decreasing trends in the ratios of strong tropical cyclones reaching typhoon intensity, while those reaching strong typhoon and super typhoon showed decreasing trends during 1957-2004. The maximum intensities of TCs, ACTCs and LTCs had all decreased during the period of 1957-2004. The mean intensities of TCs and ACTCs illustrated decreasing trends and the mean intensity of LTCs achieving typhoon intensity also showed decreasing trends.

      Key words: strong tropical cyclone, affecting China tropical cyclone, landfall tropical cyclone, China

      中圖分類號: 

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