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      氣候變化研究進(jìn)展 ?? 2008, Vol. 4 ?? Issue (002): 73-077.

      ? 研究短論 ? 上一篇    下一篇

      1961-2004年寧夏極端氣溫變化趨勢(shì)分析

      陳曉光 Declan Conway 鄭廣芬 陳曉娟   

      1. 青海省氣象局
      • 收稿日期:2007-05-08 修回日期:2007-09-24 出版日期:2008-03-31 發(fā)布日期:2008-03-31
      • 通訊作者: 陳曉光

      Trends of Extreme Temperature in Ningxia During 1961-2004

        

      • Received:2007-05-08 Revised:2007-09-24 Online:2008-03-31 Published:2008-03-31

      摘要: 利用1961-2004年寧夏逐日最高、最低氣溫資料,分析了寧夏44 a來(lái)最高、最低氣溫的變化趨勢(shì)。結(jié)果表明:寧夏的最高、最低氣溫表現(xiàn)出了明顯的變化趨勢(shì),最高氣溫<0℃的日數(shù)減少,>30℃的日數(shù)增加;在年平均最低氣溫升高的同時(shí),極冷日數(shù)也在增加,相對(duì)于1961-1990年的平均值,20世紀(jì)90年代和21世紀(jì)最初的4 a年極冷日數(shù)分別增加了1.1 d和0.7 d,距平百分率分別達(dá)350%和275%。

      關(guān)鍵詞: 氣候變化, 頻率, 最高氣溫, 最低氣溫

      Abstract: The trends in daily frequency of maximum and minimum temperatures over the last 44 years were analyzed using the daily maximum and minimum temperature data from 1961 to 2004 in Ningxia, by classifying the temperatures into 38 levels. It was found that daily frequency of maximum temperature below 0℃ decreased while that over 30℃ increased. The annual average minimum temperature increased, meanwhile the daily frequency of extremely low temperature also increased by 350%-275% in 1991-2004 relative to 1961-1990. Therefore, the extreme trends of temperature are obvious in Ningxia.

      Key words: climate change, frequency, maximum temperature, minimum temperature, Ningxia

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