河北省太阳散射辐射时空分布特征研究

为更好地利用太阳能资源，对河北省太阳散射辐射时空分布特征进行研究。利用1961--2010年河北省周边7个太阳辐射观测站的资料，计算河北省周边7个太阳辐射观测站的散射辐射误差，拟合得出河北省太阳散射辐射经验公式，分析其时空分布特征。结果表明：（1）河北省近50年太阳散射辐射年总量总体呈微小的升高趋势。其中，升高幅度相对较大的秦皇岛为4．0％，升高幅度相对较小的廊坊为0．7％。（2）河北省水平面太阳散射辐射年总量近50年平均值空间差异不大，〈2240MI·m^-2主要分布在张家口西北部和秦皇岛西南部，〉2480MJ·m^-2主要分布在保定北部，大部分地区介于2320-2480MJ·m^-2。

Study on Temporal and Spatial Distribution of Diffuse Solar Radiation in Hebei Province

In order to better use of solar energy resources, the temporal and spatial characteristics of diffuse solar radi- ation in Hebei province were studied. Based on the solar radiation data from 7 stations from 1961 to 2010 around Hebei province, deviations for the horizontal diffuse solar radiation were calculated, an empirical formula of diffuse solar radiation was obtained with data fitting, and the temporal and spatial characteristics were analyzed. The results show that the total annual diffuse solar radiation increases slightly in recent 50 years in Hebei province, including the highest amplitude of 4.0 % in Qinhuangdao and the lowest rise of 0.7 % in Langfang. The spatial variation of the horizontal diffuse solar radiation in Hebei Province in recent 50 years varies in a small wide range. The value below 2240 MJ m-2 mainly distributes in the northwest part of Zhangjiakou and southwest part of Qinhuangdao. The value over 2480 MJ m-2 mainly distributes in the north of Baoding. Most values of the region spread out between 2320 and 2480 MJ m-2.