Solar Forecasts Based on the Clear Sky Index or the Clearness Index: Which Is Better? [PDF]
Solar, 2022 In the realm of solar forecasting, it is common to use a clear sky model output to deseasonalise the solar irradiance time series needed to build the forecasting models.
Philippe Lauret +3 more
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Solar Energy Potential Estimation in Perak Using Clearness Index and Artificial Neural Network
MATEC Web of Conferences, 2014 In this paper solar energy potential has been estimated by two methods which are clearness index and artificial network (ANN) methods. The selected region is Seri Iskandar, Perak (4°24´latitude, 100°58´E longitude, 24 m altitude).
Assadi Morteza Khalaji +2 more
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Instantaneous global horizontal irradiance and clearness index data with high temporal resolution for 1016 days [PDF]
Data in Brief, 2022 Global Horizontal Irradiance was measured using a thermopile-type pyranometer during more than three years using a sample time of two seconds, with the purpose of capturing fast transient events of irradiance which are notable in tropical regions as the ...
Alberto Avila, Rafael Diez
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Performance of Dual-Axis Solar Tracker versus Static Solar System by Segmented Clearness Index in Malaysia [PDF]
International Journal of Photoenergy, 2013 The performance of Dual-Axis Solar Tracker (DAST) and Static Solar System (SSS) with respect to clearness index in Malaysia is presented. An attempt to investigate the correlation between clearness index with energy gain and efficiency of DAST over SSS ...
Jhee Fhong Lee +2 more
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Predicting global horizontal irradiance using regression-based machine learning models in high-altitude environments [PDF]
Frontiers in Artificial IntelligenceGlobal solar radiation is a fundamental component of the Earth's energy balance and plays a critical role in integrating renewable energy into electrical systems.
Milton Edward Humpiri-Flores +6 more
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Evaluation of atmosphere clearness and cloudiness parameters in the southern regions of Ukraine using statistical analysis [PDF]
Вісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія, 2021 Introduction. This paper deals with the specific aspects of insolation of the terrestrial surface in the southern regions of Ukraine, namely the clearness index and diffuse fraction of the atmosphere.
Vasyl Zatula +3 more
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Estimation of global solar radiation, sunshine hour distribution and clearness index in Enugu, Nigeria [PDF]
Journal of Applied Sciences and Environmental Management, 2019 The concept of solar energy and its applications in this present day world would come to be one of the solutions to our present Nigerian problem of instability and epileptic power supply.
N.O. Adeniji +3 more
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AtmosphereAtmosphere clearness is the single most essential parameter determining surface solar radiation. However, few studies have investigated the interannual variations in China’s atmosphere clearness and the impacts of El Niño–Southern Oscillation on it. This
Zongpeng Song +5 more
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Distribution of hourly variability index of sky clearness [PDF]
Tanzania Journal of Science, 2005 Clouds affect the values of insolation for solar technology and other applications. To detect the presence of variability in the sky clearness, an hourly variability index (p3) is calculated. The present study examined the frequency distribution of this variable as a tool for assessing the utilizability of solar radiation at a site.
A Madhlopa, Madhlopa, A
openaire +4 more sources
Quantification of the Solar Radiative Regime Variability Based on the Clearness Index
Annals of West University of Timisoara: Physics, 2016 The fluctuation of solar radiation at ground level represents a challenge in modeling the time series of solar irradiance. A procedure for the quantification of the instability of the solar radiative regime is reported.
Lucaciu Sergiu +3 more
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