邯郸太阳辐射时空分布特征

Spatial and Temporal Distribution Characteristics of the Solar Radiation in Handan

利用邯郸1980—2017年气象观测资料和河北乐亭太阳辐射观测资料,基于Hybrid radiation模型,估算邯郸近38 a太阳辐射,采用线性倾向率、突变检验、复小波分解等方法,分析邯郸太阳辐射的空间特征、线性趋势、突变和周期。结果表明:邯郸年辐射值为5 000~5 300 MJ/m2,春、夏季太阳辐射约是秋、冬季的2倍,大部分县太阳辐射资源很丰富。邯郸太阳辐射总体呈下降趋势,期间经历了连续减少、稳定维持和缓慢增长3个阶段,近10 a太阳辐射的缓慢增长主要是由春、夏季太阳辐射增加引起的。邯郸春季没有突变点,夏、秋、冬季和年序列的突变点分别为1995、1999、2001和1996年,突变年之后,下降趋势减缓。除春季外,邯郸太阳辐射存在2~4 a显著的短震荡周期。

Based on the meteorological data from 1980 to 2017 in Handan and the solar radiation observation in Laoting,Hebei province,we estimated the solar radiation variation in Handan by using Hybrid radiation model.The spatial characteristics,variation trend,abrupt change and periodicity of solar radiation in past 38 years were examined with trend analysis,rank statistics test and complex wavelet analysis.The results showed that the annual radiation value is from 5,000 to 5,300 MJ/m2,and the solar radiation in spring and summer is twice as much as that in autumn and winter.A number of counties have abundant the solar radiation resources.The solar radiation has a decreasing trend during the research period.The annual solar radiation experiences three stages,namely,continuous reduction,stable maintenance and slow growth stages.The increase of solar radiation in spring and summer contribute greatly to the steady maintenance of annual solar radiation in recent 10 years.There is not any abrupt point in spring,while there are abrupt points happened in 1995,1999,2001 and 1996 for summer,autumn,winter and the whole year respectively.The decreasing trend slow down after the abrupt point.The short-term oscillation period of 2 to 4 years for the annual and seasonal solar radiation is significant.