Spatial Simulation of China's Land Surface Solar Radiation Resources
摘要
Based on observed solar radiation and daily range of temperature data from 122 stations during 1981-2010,the Bristow-Campbell radiation model was validated and calibrated in China's eight natural regions separately.Spatial pattern of the astronomical radiation was calculated by meteorological model through geographic information platform.Gridded maximum and minimum average temperature data was achieved using PRISM model.Then the astronomical radiation and temperature data were inputted into the parameterized Bristow-Campbell model,and the spatialization process was realized.Based on Stefan-Boltzmann Law,the national long-wave radiation balance was calculated,and then inputted into the solar radiation balance equation.After that,the spatial pattern of China's land surface solar radiation balance was simulated.Results show that Bristow-Campbell model can be well used to estimate China's solar radiation after calibration and validation.Bristow-Campbell solar radiation estimation model coupling with gridded meteorological data is an effective way for the spatial simulation of solar radiation resources.The spatial pattern of China's land surface solar radiation balance shows that the high-value area is in the Tibetan Plateau with over 9000 MJ·m-2 each year.The total radiation balance in the eastern region is lower than the western where the northeastern region is slightly higher than Zhejiang and Fujian provinces.Sichuan and Guizhou are the low areas where the average radiation balance is about 2000 MJ·m-2.