Abstract: Based on the oretical model of solar radiation and relevant parameters, the annual and monthly solar radiation grid model in Qinghai plateau was established, by using Qinghai DEM model and angstrom climatology model. The model showed good simulated effect with 7.40% relative error. Spatial distribution of monthly and annual mean solar radiation in last 30 years（1970-2000）in Qinghai province was calculated by this model. The results showed that the spatial distribution of solar radiation was uneven with 6771.95 MJ/㎡of mean value. There were 3 high value regions and 1 low value region for annual solar radiation in Qinghai province. The high value regions included Kekexili, the south of Chaidamu basin and the west of Dachaidan, and the low value region located in Hehuang valley. Spatial distribution of monthly solar radiation was different in regions and seasons. The high value was in May and July, the low value was in December, and their mean value was 717.24, 701.96 and 352.63 MJ/㎡respectively.

Key words: Solar radiation, Spatial distribution, Model