Estimation of Global Solar Radiation using Angstrom and Gopinathan Model on Sunshine Hour and Temperature in Highland, Nepal

In developing countries like Nepal, the direct measurement of global solar radiation (GSR) is difficult. So, estimation GSR carried out at Jumla (29°16′ N, 82° 11′ E and about 2347 m altitude) for year 2015 2017 using regression technique to meteorological parameters on Angstrom model, Gopinathan Olomiyesan- Oyedum models. Among three models, Olomiyesan model better than other Its empirical constants a=0.38, b=0.10 c=0.09 are found. The values statistical errors MBE, MPE RMSE smaller Similarly, coefficient determination (R2=0.89) greater Finally, finding sunshine hour, temperature used estimate 2017. addition this, annual average found be 18.86 MJ/m2/day 17.50 respectively. It concluded that energy similar geographical location Nepal.