Calculation and Analysis of Annual Total Solar Radiation in Complicated Topography

Abstract:

Abstract. Solar radiation is the most important energy source in the Earth. And its spatial distribution has critical effects on the life and environmental process on the Earth. The characteristics of spatial distribution of total solar radiation in the complicated topography in the mountain area of east Tibetan Plateau was simulated in the present study. The three kinds of radiation, i.e. direct solar radiation, diffusive solar radiation and total solar radiation were calculated based on the existing astronomical parameters and experiential formula. The calculation of topographical shading was modified by using the 30m-resolution DEM data. The results revealed in general that the total solar radiation tended to decrease northwest-southeastwardly. At regional scale, the latitudinal zonality of the spatial distribution of annual total solar radiation differed insignificantly. Local topography affected profoundly the spatial distribution of annual total solar radiation. The annual total solar radiation in complicated topography was relatively less, whereas there was significant inner difference.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 47-50
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.47
• Online since: May 2012
• Authors: Xue Ru Zhang, Dong Jie Guan, Feng Yun Mou, Kun Dong
• Keywords: DEM, Solar Radiation, Spatial Distribution, Topography

References

[1] Y. Zeng, X.F. Qiu, and C. M. Liu: Acta Geographica Sinica, Vol. 60(2005) ,p.680(In Chinese)

[2] S. J.Yuan, Q.L. Miu, and X. P. Gu: Journal of Natural Resources, Vol. 24(2009) ,p.1432(In Chinese)

[3] E. L. Maxwell, G.R.Yu, and D. Niu: Solar Energy, Vol. 62(1998) ,p.263

[4] X.Y. Zhang and X. Z. Feng: Plateau Meteorology, Vol. 25(2006) ,p.123(In Chinese)

[5] H. L.He, G.R.Yu, and D. Niu: Resources Science, Vol. 25(2003) ,p.78(In Chinese)

[6] D. G.Zuo, Y.H. Zhou, and Y. Q. Xiang: On Surface Radiations(Science Press, BeiJing 1991)(In Chinese)

[7] J. A. Duffie and W. A. Beckman: Solar Engineering of Thermal Processes (John Wiley &Sons, New York 1991).

[8] Y. S.Xie, X.M. Tang, and S.S. Huang: Forest Research, Vol. 16(2003) ,p.8(In Chinese)

[9] L. T.Wong and W.K. Chow: Applied Energy, Vol. 69(2001) ,p.191