Estimated Daily Global Radiation for Zhengzhou and Its Comparison With Observations

Abstract

Abstract. Three models relating daily global solar radiation to sunshine duration has been investigated in order to estimate daily global radiation for Zhengzhou, China. The data from January 1995 to December 2004 have been used in the models. Comparison of the estimated and measured values showed that the cubic model was able to estimate global radiation at high daily global solar radiation.

The applicability of sunshine-based global solar radiation models modified with meteorological factors for different climate zones of China

“…M. Ozturk (2015) established linear, quadratic, cubic, and power function models for Isparta, Turkey, and the cubic model predicted the best results. Liu et al (2016) established linear, quadratic, and cubic equations for Zhengzhou, China by using the data between January 1995 and December 2004, and the cubic model predicted better results than other models. Ishola et al (2019) modified the various model coefficients for Ireland, and the results show that the quadratic model works best.…”

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