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      氣候變化研究進(jìn)展 ?? 2010, Vol. 6 ?? Issue (06): 424-428.

      ? 氣候系統(tǒng)變化 ? 上一篇    下一篇

      華中區(qū)域取暖、降溫度日的年代際及空間變化特征

      任永建1,劉敏1,陳正洪2,肖鶯1,萬素琴1   

      1. 1. 武漢區(qū)域氣候中心
        2. 湖北省氣象科技服務(wù)中心
      • 收稿日期:2009-12-02 修回日期:2010-03-02 出版日期:2010-11-30 發(fā)布日期:2010-12-10
      • 通訊作者: 任永建 E-mail:ryj407@163.com

      Decadal and Spatial Variation Characteristics of Heating and Cooling Degree-Days in Central China

      • Received:2009-12-02 Revised:2010-03-02 Online:2010-11-30 Published:2010-12-10

      摘要: 選取華中區(qū)域(河南、湖北、湖南)通過均一化檢驗(yàn)的53個(gè)氣象站,利用1961—2007年逐日平均氣溫計(jì)算區(qū)域逐年取暖度日(HDD)、降溫度日(CDD),分析其趨勢及年代際變化和空間分布特征。結(jié)果表明:47年來區(qū)域年HDD總體呈顯著下降趨勢;CDD呈微弱的下降,變化不顯著,這與暖季較小的增溫速率有關(guān)。HDD由河南向湖南基本上呈現(xiàn)遞減的趨勢,CDD與HDD呈相反的變化特征。HDD同冷季平均氣溫呈反位相變化,而CDD同暖季平均氣溫呈同位相變化。

      關(guān)鍵詞: 取暖度日, 降溫度日, 氣候變暖, 華中區(qū)域, heating degree days, cooling degree days, climate warming, Central China

      Abstract: The 53 stations in Central China, including Henan, Hubei and Hunan, were selected through the homogenization test. Based on the daily average temperature data from 1961 to 2007, the heating degree days (HDD) and cooling degree days (CDD) per year were calculated to analyze their trends, decadal variations and spatial differences. The results show that the regional annual HDD was reduced significantly in the past 47 years, and the annual CDD showed a slight declining, which was related with a smaller warming rate in the warm season. Spatially, the HDD appeared a decreasing trend from Henan to Hunan, while the CDD showed an opposite character. The HDD changed in an opposite phase with the average temperature in the cold season, while the CDD changed in the same phase with the average temperature in the warm season.

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