2022-12-192022-12-192016-09Arslanoğlu, N. (2016). "Evaluation and establishment of diffuse solar radiation models for Bursa, Turkey". Energy Sources, Part A: Recovery, Utilization and Environmental Effects, 38(18), 2788-2797.1556-70361556-7230https://doi.org/10.1080/15567036.2016.1214640https://www.tandfonline.com/doi/full/10.1080/15567036.2016.1214640http://hdl.handle.net/11452/29957The main objective of the present study is to evaluate the applicability of the diffuse solar radiation models from previous studies and establish new models for Bursa. Therefore, 35 regression models from previous studies in the literature are used and categorized as follows: (1) cloudness index is the function of clearness index; (2) cloudness index is the function of relative sunshine duration; (3) the diffuse coefficient is the function of the clearness index; and (4) the diffuse coefficient is the function of the relative sunshine duration. Also, new four diffuse solar radiation models were developed using 1968-2015 long-term global solar radiation and sunshine duration data. The new models are then compared with 35 empirical equations available in previous studies in terms of different statistical tests. Consequently, Models 6 and 8 are found as the most accurate and high-performance empirical models for estimation of the monthly mean diffuse solar radiation on a horizontal surface for Bursa, Turkey.eninfo:eu-repo/semantics/closedAccessEnergy & fuelsEngineeringEnvironmental sciences & ecologyBursaDiffuse solar radiationRegression modelsSolar modelsStatistical testsGlobal radiationFractionRegionCitiesFunction evaluationRegression analysisSolar radiationStatistical testsDiffuse solar radiation modelsDiffuse solar radiationsGlobal solar radiationHorizontal surfacesRegression modelRelative sunshine durationRadiationArticle0003855425000232-s2.0-84989947924278827973818Energy & fuelsEngineering, chemicalEnvironmental sciencesDiffuse Solar Radiation; Clear Sky; Prediction