气候变化研究进展 ›› 2010, Vol. 6 ›› Issue (06): 424-428.

• 气候系统变化 • 上一篇    下一篇

华中区域取暖、降温度日的年代际及空间变化特征

任永建1,刘敏1,陈正洪2,肖莺1,万素琴1   

  1. 1. 武汉区域气候中心
    2. 湖北省气象科技服务中心
  • 收稿日期:2009-12-02 修回日期:2010-03-02 出版日期:2010-11-30 发布日期:2010-12-10
  • 通讯作者: 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: 选取华中区域(河南、湖北、湖南)通过均一化检验的53个气象站,利用1961—2007年逐日平均气温计算区域逐年取暖度日(HDD)、降温度日(CDD),分析其趋势及年代际变化和空间分布特征。结果表明:47年来区域年HDD总体呈显著下降趋势;CDD呈微弱的下降,变化不显著,这与暖季较小的增温速率有关。HDD由河南向湖南基本上呈现递减的趋势,CDD与HDD呈相反的变化特征。HDD同冷季平均气温呈反位相变化,而CDD同暖季平均气温呈同位相变化。

关键词: 取暖度日, 降温度日, 气候变暖, 华中区域, 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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