黑龙江省50a来度日的时空分布特征

选用黑龙江省经过均一性检验的59个台站1961-2010年逐日最高、最低气温计算全省逐年热度日（HDD）、冷度日（CDD）,分析其趋势及年代际和空间分布特征。结果表明：50 a来HDD总体呈显著的下降趋势,CDD整体表现为显著上升趋势。HDD基本上呈现由北向南递减趋势,CDD与HDD呈相反的变化特征,二者纬向分布明显。HDD与CDD均与对应时段平均气温具有较高的相关性,HDD与冷季平均气温呈反位相变化,CDD同暖季平均气温呈同位相变化。随着气候变暖,冷季用于供暖的能源将减少,暖季制冷所需的能源消耗将不断增加。

Temporal and spatial variation characteristics of Degree-Days in Heilongjiang province in the past 50 years

The data of daily maximum and minimum temperature which was from 59 stations and passed the homogeneity test was selected.Based on the data from 1961-2010,the Degree-Days were calculated to analyze their temporal and spatial distribution.The results showed that the HDD was reduced significantly and the CDD was increased significantly in the past 50 years.Spatially,the HDD appeared a decrease trend from north to south in Heilongjiang,while the CDD showed an opposite variation characteristics.They both had significant latitudinal distribution.The HDD and CDD were highly correlated with the corresponding period average temperature,the HDD changed in an opposite phase with the mean temperature of the cold season,while the CDD changed in a same phase with the mean temperature of the warm season.With the climate warming in Heilongjiang province,the energy consumption in cold season decrease,while,the energy consumption in warm season increase.