Solar energy resource distribution and regional division in Liaoning province

Based on the monthly solar radiation data in Shenyang station,Dalian station and Chaoyang station and sunshine percentage data from 1971 to 2006,as well as statistical method for data interpolation,the solar energy resource distribution was analyzed in Liaoning province.The results indicate the solar energy resources are rich in the west of Liaoning province and coastal areas as well as Changshan islands,followed in the northern of Liaoning province,and poor in the east mountain areas of Liaoning province.The solar energy resources are rich in spring and summer,especially in May,and poor in autumn and winter,especially in December.The inter-annual changes of solar energy resources are relatively stable and inter-decadal changes fluctuate lightly.The fluctuation is smaller in the 1980s and larger in the 1990s.And it becomes smaller during recent years.According to annual total solar radiation in different regions,it is suggested that the assessment indices of solar energy resources could be divided into 4 levels.The solar energy resources in Liaoning province could be divided into rich region,richer region,average region and poor region.